Outputs (134)

Links between optical and X-ray light in Scorpius X-1 (2023)
Journal Article
Igl, A. B., Hynes, R. I., Britt, C. T., O’Brien, K. S., & Mikles, V. J. (2023). Links between optical and X-ray light in Scorpius X-1. Monthly Notices of the Royal Astronomical Society, 526(1), 645–660. https://doi.org/10.1093/mnras/stad2721

We observed the low-mass X-ray binary Sco X-1 for 12 nights simultaneously using the Rossi X-Ray Timing Explorer and the Otto Struve Telescope at McDonald Observatory at 1-s time-resolution. This is among the most comprehensive simultaneous X-Ray/opt... Read More about Links between optical and X-ray light in Scorpius X-1.

Sub-second infrared variability from the archetypal accreting neutron star 4U 1728−34 (2023)
Journal Article
Vincentelli, F. M., Casella, P., Borghese, A., Cavecchi, Y., Mastroserio, G., Stella, L., …Uttley, P. (2023). Sub-second infrared variability from the archetypal accreting neutron star 4U 1728−34. Monthly Notices of the Royal Astronomical Society, 525(2), 2509-2518. https://doi.org/10.1093/mnras/stad2414

We report on the first simultaneous high-time resolution X-ray and infrared (IR) observations of a neutron star low mass X-ray binary in its hard state. We performed ≈ 2 h of simultaneous observations of 4U 1728−34 using HAWK-I@VLT, XMM– Newton, and... Read More about Sub-second infrared variability from the archetypal accreting neutron star 4U 1728−34.

Design of the VLT-CUBES image slicers: Field re-formatters to provide two spectral resolutions (2022)
Journal Article
Calcines, A., Wells, M., O’Brien, K., Morris, S., Seifert, W., Zanutta, A., …Di Marcantonio, P. (2023). Design of the VLT-CUBES image slicers: Field re-formatters to provide two spectral resolutions. Experimental Astronomy, 55(1), 267-280. https://doi.org/10.1007/s10686-022-09866-5

CUBES is a high efficiency spectrograph designed for a Cassegrain focus of the Very Large Telescope and is expected to be in operation in 2028. It is designed to observe point or compact sources in a spectral range from 300 to 405nm. CUBES will provi... Read More about Design of the VLT-CUBES image slicers: Field re-formatters to provide two spectral resolutions.

CUBES: application of image slicers to reformat the field for two spectral resolving powers (2022)
Conference Proceeding
Calcines Rosario, A. Z., Wells, M., O’Brien, K. S., Morris, S. L., Seifert, W., Zanutta, A., …Di Marcantonio, P. (2022). CUBES: application of image slicers to reformat the field for two spectral resolving powers. In R. Navarro, & R. Geyl (Eds.), Proceedings Volume 12188, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation V; SPIE Astronomical Telescopes + Instrumentation. https://doi.org/10.1117/12.2626233

The Cassegrain U-Band Efficient Spectrograph (CUBES) is a high-efficiency spectrograph designed for observations from 305 to 400nm. It will be integrated at a Cassegrain focus of the Very Large Telescope (VLT). The image slicer technology is applied... Read More about CUBES: application of image slicers to reformat the field for two spectral resolving powers.

Fast infrared variability from the black hole candidate MAXI J1535−571 and tight constraints on the modelling (2021)
Journal Article
Vincentelli, F., Casella, P., Russell, D., Baglio, M., Veledina, A., Maccarone, T., …Uttley, P. (2021). Fast infrared variability from the black hole candidate MAXI J1535−571 and tight constraints on the modelling. Monthly Notices of the Royal Astronomical Society, 503(1), 614-624. https://doi.org/10.1093/mnras/stab475

We present the results regarding the analysis of the fast X-ray/infrared (IR) variability of the black hole transient MAXI J1535−571. The data studied in this work consist of two strictly simultaneous observations performed with XMM–Newton (X-rays: 0... Read More about Fast infrared variability from the black hole candidate MAXI J1535−571 and tight constraints on the modelling.

First Principle Simulator of a Stochastically Varying Image Plane for Photon-counting High Contrast Applications (2020)
Journal Article
Dodkins, R. H., Davis, K. K., Lewis, B., Mahashabde, S., Mazin, B. A., Lipartito, I. A., …Thatte, N. (2020). First Principle Simulator of a Stochastically Varying Image Plane for Photon-counting High Contrast Applications. Publications of the Astronomical Society of the Pacific, 132(1016), Article 104503. https://doi.org/10.1088/1538-3873/aba9e4

Optical and near-infrared Microwave Kinetic Inductance Detectors, or MKIDs are low-temperature detectors with inherent spectral resolution that are able to instantly register individual photons with potentially no false counts or readout noise. These... Read More about First Principle Simulator of a Stochastically Varying Image Plane for Photon-counting High Contrast Applications.

KIDSpec: An MKID-Based Medium-Resolution, Integral Field Spectrograph (2020)
Journal Article
O’Brien, K. (2020). KIDSpec: An MKID-Based Medium-Resolution, Integral Field Spectrograph. Journal of Low Temperature Physics, 199(1-2), 537-546. https://doi.org/10.1007/s10909-020-02347-z

KIDSpec, the Kinetic Inductance Detector Spectrograph, is a concept for a highly sensitive, medium-spectral-resolution optical through near-IR spectrograph. It uses the intrinsic-energy-resolving capability of an array of optical/IR-sensitive MKIDs t... Read More about KIDSpec: An MKID-Based Medium-Resolution, Integral Field Spectrograph.

Physical Constraints from Near-infrared Fast Photometry of the Black Hole Transient GX 339–4 (2019)
Journal Article
Vincentelli, F., Casella, P., Petrucci, P., Maccarone, T., Russell, D., Uttley, P., …Tomsick, J. (2019). Physical Constraints from Near-infrared Fast Photometry of the Black Hole Transient GX 339–4. Astrophysical Journal Letters, 887(1), Article L19. https://doi.org/10.3847/2041-8213/ab5860

We present results from the first multi-epoch X-ray/IR fast-photometry campaign on the black hole transient GX 339–4, during its 2015 outburst decay. We studied the evolution of the power spectral densities finding strong differences between the two... Read More about Physical Constraints from Near-infrared Fast Photometry of the Black Hole Transient GX 339–4.

A Wildly Flickering Jet in the Black Hole X-Ray Binary MAXI J1535–571 (2018)
Journal Article
Cristina Baglio, M., Russell, D. M., Casella, P., Al Noori, H., Al Yazeedi, A., Belloni, T., …Vincentelli, F. M. (2018). A Wildly Flickering Jet in the Black Hole X-Ray Binary MAXI J1535–571. Astrophysical Journal, 867(2), Article 114. https://doi.org/10.3847/1538-4357/aae532

We report on the results of optical, near-infrared (NIR), and mid-infrared observations of the black hole X-ray binary candidate (BHB) MAXI J1535–571 during its 2017/2018 outburst. During the first part of the outburst (MJD 58004–58012), the source s... Read More about A Wildly Flickering Jet in the Black Hole X-Ray Binary MAXI J1535–571.

A jet model for the fast IR variability of the black hole X-ray binary GX 339-4 (2018)
Journal Article
Malzac, J., Kalamkar, M., Vincentelli, F., Vue, A., Drappeau, S., Belmont, R., …Uttley, P. (2018). A jet model for the fast IR variability of the black hole X-ray binary GX 339-4. Monthly Notices of the Royal Astronomical Society, 480(2), 2054-2071. https://doi.org/10.1093/mnras/sty2006

Using the simultaneous Infra-Red (IR) and X-ray light curves obtained by Kalamkar et al., we perform a Fourier analysis of the IR/X-ray timing correlations of the black hole X-ray binary (BHB) GX 339-4. The resulting IR vs X-ray Fourier coherence and... Read More about A jet model for the fast IR variability of the black hole X-ray binary GX 339-4.

Characterization of the infrared/X-ray subsecond variability for the black hole transient GX 339-4 (2018)
Journal Article
Vincentelli, F., Casella, P., Maccarone, T., Uttley, P., Gandhi, P., Belloni, T., …O'Brien, K. (2018). Characterization of the infrared/X-ray subsecond variability for the black hole transient GX 339-4. Monthly Notices of the Royal Astronomical Society, 477(4), 4524-4533. https://doi.org/10.1093/mnras/sty710

We present a detailed analysis of the X-ray/IR fast variability of the Black-Hole Transient GX 339-4 during its low/hard state in 2008 August. Thanks to simultaneous high time resolution observations made with the VLT and RXTE, we performed the first... Read More about Characterization of the infrared/X-ray subsecond variability for the black hole transient GX 339-4.

MKID digital readout tuning with deep learning (2018)
Journal Article
Dodkins, R., Mahashabde, S., O’Brien, K., Thatte, N., Fruitwala, N., Walter, A., …Mazin, B. (2018). MKID digital readout tuning with deep learning. Astronomy and computing, 23, 60-71. https://doi.org/10.1016/j.ascom.2018.03.001

Microwave Kinetic Inductance Detector (MKID) devices offer inherent spectral resolution, simultaneous read out of thousands of pixels, and photon-limited sensitivity at optical wavelengths. Before taking observations the readout power and frequency o... Read More about MKID digital readout tuning with deep learning.

System mass constraints for the accreting millisecond pulsar XTE J1814-338 using Bowen fluorescence (2017)
Journal Article
Wang, L., Steeghs, D., Casares, J., Charles, P., Muñoz-Darias, T., Marsh, T., …O'Brien, K. (2017). System mass constraints for the accreting millisecond pulsar XTE J1814-338 using Bowen fluorescence. Monthly Notices of the Royal Astronomical Society, 466(2), 2261-2271. https://doi.org/10.1093/mnras/stw3312

We present phase-resolved spectroscopy of the millisecond X-ray pulsar XTE J1814-338 obtained during its 2003 outburst. The spectra are dominated by high-excitation emission lines of He II λ4686, Hβ, and the Bowen blend C III/N III 4630–50 Å. We expl... Read More about System mass constraints for the accreting millisecond pulsar XTE J1814-338 using Bowen fluorescence.

Simulated observations of high-redshift galaxies with the HARMONI spectrograph for the European Extremely Large Telescope (2016)
Other
Kendrew, S., Zieleniewski, S., Houghton, R. C., Thatte, N., Devriendt, J., Tecza, M., …Häußler, B. (2016). Simulated observations of high-redshift galaxies with the HARMONI spectrograph for the European Extremely Large Telescope

A microwave kinetic inductance detector for the DAG telescope (2016)
Other
Güver, T., Mazin, B. A., O'Brien, K., Kay, B., Alis, S., Yelkenci, F. K., …Keskin, O. (2016). A microwave kinetic inductance detector for the DAG telescope

Characterizing the performance of cryogenic lens mounts for the HARMONI spectograph (2016)
Other
Allen, J. R., O'Brien, K., Lynn, J. D., Thatte, N. A., Tosh, I. A., & Tacon, M. (2016). Characterizing the performance of cryogenic lens mounts for the HARMONI spectograph

The E-ELT first light spectrograph HARMONI: capabilities and modes (2016)
Other
Thatte, N. A., Clarke, F., Bryson, I., Shnetler, H., Tecza, M., Fusco, T., …Larrieu, M. (2016). The E-ELT first light spectrograph HARMONI: capabilities and modes

The E-ELT first light spectrograph HARMONI: capabilities and modes (2016)
Conference Proceeding
Thatte, N. A., Clarke, F., Bryson, I., Shnetler, H., Tecza, M., Fusco, T., …Evans, C. J. (2016). The E-ELT first light spectrograph HARMONI: capabilities and modes. In L. Simard, H. Takami, & C. J. Evans (Eds.), Proceedings Volume 9908, Ground-based and Airborne Instrumentation for Astronomy VI. https://doi.org/10.1117/12.2230629

HARMONI is the E-ELT’s first light visible and near-infrared integral field spectrograph. It will provide four different spatial scales, ranging from coarse spaxels of 60 × 30 mas best suited for seeing limited observations, to 4 mas spaxels that Nyq... Read More about The E-ELT first light spectrograph HARMONI: capabilities and modes.

Detection of the first infra-red quasi-periodic oscillation in a black hole X-ray binary (2016)
Journal Article
Kalamkar, M., Casella, P., Uttley, P., O'Brien, K., Russell, D., Maccarone, T., …Vincentelli, F. (2016). Detection of the first infra-red quasi-periodic oscillation in a black hole X-ray binary. Monthly Notices of the Royal Astronomical Society, 460(3), 3284-3291. https://doi.org/10.1093/mnras/stw1211

We present the analysis of fast variability of Very Large Telescope/ISAAC (Infrared Spectrometer And Array Camera) (infra-red), XMM–Newton/OM (optical) and EPIC-pn (X-ray), and RXTE/PCA (X-ray) observations of the black hole X-ray binary GX 339−4 in... Read More about Detection of the first infra-red quasi-periodic oscillation in a black hole X-ray binary.

Simulated stellar kinematics studies of high-redshift galaxies with the HARMONI Integral Field Spectrograph (2016)
Journal Article
Kendrew, S., Zieleniewski, S., Houghton, R., Thatte, N., Devriendt, J., Tecza, M., …Häußler, B. (2016). Simulated stellar kinematics studies of high-redshift galaxies with the HARMONI Integral Field Spectrograph. Monthly Notices of the Royal Astronomical Society, 458(3), 2405-2422. https://doi.org/10.1093/mnras/stw438

We present a study into the capabilities of integrated and spatially resolved integral field spectroscopy of galaxies at z = 2–4 with the future HARMONI spectrograph for the European Extremely Large Telescope (E-ELT) using the simulation pipeline, HS... Read More about Simulated stellar kinematics studies of high-redshift galaxies with the HARMONI Integral Field Spectrograph.

Science with KRAKENS (2015)
Other
Mazin, B. A., Becker, G., France, K., Fraser, W., Howell, D. A., Jones, T., …Vasisht, G. (2015). Science with KRAKENS

Fast multi-wavelength broad-band and QPO variability in a black hole X-ray binary: accretion flow and/or a jet origin? (2015)
Other
Kalamkar, M., Casella, P., O'Brien, K., Uttley, P., & Maccarone, T. (2015). Fast multi-wavelength broad-band and QPO variability in a black hole X-ray binary: accretion flow and/or a jet origin?

The ARCONS Pipeline: Data Reduction for MKID Arrays (2015)
Journal Article
van Eyken, J., Strader, M., Walter, A., Meeker, S., Szypryt, P., Stoughton, C., …Mazin, B. (2015). The ARCONS Pipeline: Data Reduction for MKID Arrays. Astrophysical Journal Supplement, 219,

Correlated Optical and X-ray variability in V404 Cyg (2015)
Journal Article
Gandhi, P., Shaw, A., Pahari, M., Littlefair, S., Hardy, L., Dhillon, V., …Walton, D. (2015). Correlated Optical and X-ray variability in V404 Cyg

Erratum: ULTRASPEC: a high-speed imaging photometer on the 2.4-m Thai National Telescope (2015)
Journal Article
Dhillon, V., Marsh, T., Atkinson, D., Bezawada, N., Bours, M., Copperwheat, C., …Vick, A. (2015). Erratum: ULTRASPEC: a high-speed imaging photometer on the 2.4-m Thai National Telescope. Monthly Notices of the Royal Astronomical Society, 446,

KIDSpec: an MKID based medium resolution integral field spectrograph (2014)
Other
O'Brien, K., Thatte, N., & Mazin, B. (2014). KIDSpec: an MKID based medium resolution integral field spectrograph

Integral field spectroscopy of high redshift galaxies with the HARMONI spectrograph on the European Extremely Large Telescope (2014)
Other
Kendrew, S., Zieleniewski, S., Thatte, N., Devriendt, J., Houghton, R., Fusco, T., …O'Brien, K. (2014). Integral field spectroscopy of high redshift galaxies with the HARMONI spectrograph on the European Extremely Large Telescope

Simultaneous independent measurements of a truncated inner accretion disc in the low/hard state of GX 399$-$4 (2014)
Other
Plant, D., O'Brien, K., & Fender, R. (2014). Simultaneous independent measurements of a truncated inner accretion disc in the low/hard state of GX 399$-$4

The spectrograph units for the HARMONI integral field spectrograph (2014)
Other
O'Brien, K., Allen, J. R., Lynn, J. D., Thatte, N. A., Bryson, I., Clarke, F., …Tecza, M. (2014). The spectrograph units for the HARMONI integral field spectrograph

Cryogenic testing of components for the HARMONI spectrograph (2014)
Other
Allen, J. R., O'Brien, K., Lynn, J. D., Thatte, N. A., Bryson, I., Clarke, F., …Tecza, M. (2014). Cryogenic testing of components for the HARMONI spectrograph

HARMONI: the first light integral field spectrograph for the E-ELT (2014)
Other
Thatte, N. A., Clarke, F., Bryson, I., Schnetler, H., Tecza, M., Bacon, R. M., …Neichel, B. (2014). HARMONI: the first light integral field spectrograph for the E-ELT

ULTRASPEC: a high-speed imaging photometer on the 2.4-m Thai National Telescope (2014)
Journal Article
Dhillon, V., Marsh, T., Atkinson, D., Bezawada, N., Bours, M., Copperwheat, C., …Vick, A. (2014). ULTRASPEC: a high-speed imaging photometer on the 2.4-m Thai National Telescope. Monthly Notices of the Royal Astronomical Society, 444, 4009-4021

Direct detection of SDSS J0926+3624 orbital expansion with ARCONS (2014)
Journal Article
Szypryt, P., Duggan, G., Mazin, B., Meeker, S., Strader, M., van Eyken, J., …Bumble, B. (2014). Direct detection of SDSS J0926+3624 orbital expansion with ARCONS. Monthly Notices of the Royal Astronomical Society, 439(3), 2765-2770. https://doi.org/10.1093/mnras/stu137

AM Canum Venaticorum (AM CVn) stars belong to a class of ultracompact, short-period binaries with spectra dominated largely by helium. SDSS J0926+3624 is of particular interest as it is the first observed eclipsing AM CVn system. We observed SDSS J09... Read More about Direct detection of SDSS J0926+3624 orbital expansion with ARCONS.

Preliminary Results from the Array Camera for Optical to Near-IR Spectrophotometry (ARCONS) (2013)
Other
Mazin, B. A., O'Brien, K., Bumble, B., Strader, M., Meeker, S., Stoughton, C., …Ulbricht, G. (2013). Preliminary Results from the Array Camera for Optical to Near-IR Spectrophotometry (ARCONS)

High resolution in three dimensions with SWIFT and PALM3K (2013)
Other
Clarke, F., Thatte, N., Tecza, M., O'Brien, K., Houghton, R., Tiee, D., …Fini, L. (2013). High resolution in three dimensions with SWIFT and PALM3K

An Evolving Compact Jet in the Black Hole X-Ray Binary MAXI J1836-194 (2013)
Journal Article
Russell, D., Russell, T., Miller-Jones, J., O'Brien, K., Soria, R., Sivakoff, G., …Tudose, V. (2013). An Evolving Compact Jet in the Black Hole X-Ray Binary MAXI J1836-194. Astrophysical Journal, 768,

Giga-z: A 100,000 Object Superconducting Spectrophotometer for LSST Follow-up (2013)
Journal Article
Marsden, D. W., Mazin, B. A., O'Brien, K., & Hirata, C. (2013). Giga-z: A 100,000 Object Superconducting Spectrophotometer for LSST Follow-up. Astrophysical Journal Supplement, 208,

Excess Optical Enhancement Observed with ARCONS for Early Crab Giant Pulses (2013)
Journal Article
Strader, M., Johnson, M., Mazin, B., Spiro Jaeger, G., Gwinn, C., Meeker, S., …Bumble, B. (2013). Excess Optical Enhancement Observed with ARCONS for Early Crab Giant Pulses. Astrophysical Journal, 779,

Jet spectral breaks in black hole X-ray binaries (2013)
Journal Article
Russell, D., Markoff, S., Casella, P., Cantrell, A., Chatterjee, R., Fender, R., …Shahbaz, T. (2013). Jet spectral breaks in black hole X-ray binaries. Monthly Notices of the Royal Astronomical Society, 429, 815-832

ARCONS: A 2024 Pixel Optical through Near-IR Cryogenic Imaging Spectrophotometer (2013)
Journal Article
Mazin, B., Meeker, S., Strader, M., Szypryt, P., Marsden, D., van Eyken, J., …Stoughton, C. (2013). ARCONS: A 2024 Pixel Optical through Near-IR Cryogenic Imaging Spectrophotometer. Publications of the Astronomical Society of the Pacific, 125,

Optical lumped element microwave kinetic inductance detectors (2012)
Other
Marsden, D., Mazin, B. A., Bumble, B., Meeker, S., O'Brien, K., McHugh, S., …Langman, E. (2012). Optical lumped element microwave kinetic inductance detectors

First Optical Observations with Microwave Kinetic Inductance Detectors (2012)
Other
Meeker, S., Mazin, B., O'Brien, K., McHugh, S., Bumble, B., Langman, E., & Navaroli, M. (2012). First Optical Observations with Microwave Kinetic Inductance Detectors

SuperMOS: a new class of low resolution multiobject spectrographs (2012)
Other
Mazin, B. A., Marsden, D., & O'Brien, K. (2012). SuperMOS: a new class of low resolution multiobject spectrographs

ARCONS: a 1024 pixel superconducting integral field spectrograph (2012)
Other
O'Brien, K., Mazin, B., McHugh, S., Meeker, S., Marsden, D., & Bumble, B. (2012). ARCONS: a 1024 pixel superconducting integral field spectrograph

ARCONS: a Highly Multiplexed Superconducting UV-to-Near-IR Camera (2012)
Other
O'Brien, K., Mazin, B., McHugh, S., Meeker, S., Bumble, B., Hanisch, R., & Seaman, R. (2012). ARCONS: a Highly Multiplexed Superconducting UV-to-Near-IR Camera

The near-infrared counterpart of 4U 1636-53 (2012)
Journal Article
Russell, D., O'Brien, K., Muñoz-Darias, T., Casella, P., Gandhi, P., & Revnivtsev, M. (2012). The near-infrared counterpart of 4U 1636-53. Astronomy and Astrophysics, 539,

A late jet rebrightening revealed from multiwavelength monitoring of the black hole candidate XTE J1752-223 (2012)
Journal Article
Russell, D., Curran, P., Muñoz-Darias, T., Lewis, F., Motta, S., Stiele, H., …Cadolle Bel, M. (2012). A late jet rebrightening revealed from multiwavelength monitoring of the black hole candidate XTE J1752-223. Monthly Notices of the Royal Astronomical Society, 419, 1740-1751

A superconducting focal plane array for ultraviolet, optical, and near-infrared astrophysics (2012)
Journal Article
Mazin, B. A., Bumble, B., Meeker, S. R., O'Brien, K., McHugh, S., & Langman, E. (2012). A superconducting focal plane array for ultraviolet, optical, and near-infrared astrophysics. Optics Express, 20,

A readout for large arrays of microwave kinetic inductance detectors (2012)
Journal Article
McHugh, S., Mazin, B. A., Serfass, B., Meeker, S., O'Brien, K., Duan, R., …Werthimer, D. (2012). A readout for large arrays of microwave kinetic inductance detectors. Review of Scientific Instruments, 83,

The nature of the X-ray transient MAXI J0556-332 (2012)
Journal Article
Cornelisse, R., D'Avanzo, P., Campana, S., Casares, J., Charles, P., Israel, G., …Torres, M. (2012). The nature of the X-ray transient MAXI J0556-332. Monthly Notices of the Royal Astronomical Society, 420, 3538-3544

Fast multiwavelength variability from jets in X-ray binaries (2011)
Other
Casella, P., Maccarone, T. J., & O'Brien, K. (2011). Fast multiwavelength variability from jets in X-ray binaries

High time resolution optical/X-ray cross-correlations for X-ray binaries: anticorrelations and rapid variability (2011)
Journal Article
Durant, M., Shahbaz, T., Gandhi, P., Cornelisse, R., Muñoz-Darias, T., Casares, J., …Hynes, R. (2011). High time resolution optical/X-ray cross-correlations for X-ray binaries: anticorrelations and rapid variability. Monthly Notices of the Royal Astronomical Society, 410, 2329-2338

Bright mid-infrared detections of MAXI J1836-194 with VISIR on the VLT: brightening of the compact jet (2011)
Journal Article
Russell, D., Belloni, T., Miller-Jones, J., O'Brien, K., Gandhi, P., Cadolle Bel, M., …Corbel, S. (2011). Bright mid-infrared detections of MAXI J1836-194 with VISIR on the VLT: brightening of the compact jet

Optical atmospheric extinction over Cerro Paranal (2011)
Journal Article
Patat, F., Moehler, S., O'Brien, K., Pompei, E., Bensby, T., Carraro, G., …Szeifert, T. (2011). Optical atmospheric extinction over Cerro Paranal. Astronomy and Astrophysics, 527,

The Bowen Survey; detecting donor star signatures in low mass X-ray binaries (2010)
Other
Cornelisse, R., Casares, J., Steeghs, D., Charles, P., Barnes, A., Hynes, R., …Muñoz-Darias, T. (2010). The Bowen Survey; detecting donor star signatures in low mass X-ray binaries

Mapping LMXBs with reprocessed X-ray bursts (2010)
Other
Munoz-Darias, T., Martinez-Pais, I., Casares, J., O'Brien, K., Cornelisse, R., Dhillon, V., …Still, M. (2010). Mapping LMXBs with reprocessed X-ray bursts

Echo-mapping of Scorpius X-1 (2010)
Other
Britt, C. T., Hynes, R., Mikles, V., Robinson, E., & O'Brien, K. (2010). Echo-mapping of Scorpius X-1

Fast Multiwavelength Variability from Jets in X-ray Binaries, a New Powerful Tool (2010)
Other
Casella, P., Maccarone, T., O'Brien, K., Fender, R., Russell, D., van der Klis, M., …Wijnands, R. (2010). Fast Multiwavelength Variability from Jets in X-ray Binaries, a New Powerful Tool

ARCHONS: a highly multiplexed superconducting optical to near-IR camera (2010)
Other
Mazin, B. A., O'Brien, K., McHugh, S., Bumble, B., Moore, D., Golwala, S., & Zmuidzinas, J. (2010). ARCHONS: a highly multiplexed superconducting optical to near-IR camera

Fast multiwavelength variability from jets in X-ray binaries (2010)
Other
Casella, P., Maccarone, T., & O'Brien, K. (2010). Fast multiwavelength variability from jets in X-ray binaries

Correction of Field Rotator-Induced Flat-Field Systematics--A Case Study Using Archived VLT-FORS Data (2010)
Journal Article
Moehler, S., Freudling, W., Møller, P., Patat, F., Rupprecht, G., & O'Brien, K. (2010). Correction of Field Rotator-Induced Flat-Field Systematics--A Case Study Using Archived VLT-FORS Data. Publications of the Astronomical Society of the Pacific, 122,

Fast infrared variability from a relativistic jet in GX 339-4 (2010)
Journal Article
Casella, P., Maccarone, T., O'Brien, K., Fender, R., Russell, D., van der Klis, M., …Wijnands, R. (2010). Fast infrared variability from a relativistic jet in GX 339-4. Monthly Notices of the Royal Astronomical Society, 404, L21-L25

The astrophysics of ultra-compact binaries (2009)
Other
Nelemans, G., Wood, M., Groot, P., Anderson, S., Belczynski, K., Benacquista, M., …Yungelson, L. (2009). The astrophysics of ultra-compact binaries

Polarimetric signatures of infrared jets in X-ray binaries (2009)
Other
Shahbaz, T., Fender, R., Watson, C., & O'Brien, K. (2009). Polarimetric signatures of infrared jets in X-ray binaries

Dynamical constraints on the neutron star mass in EXO 0748-676 (2009)
Journal Article
Muñoz-Darias, T., Casares, J., O'Brien, K., Steeghs, D., Martínez-Pais, I., Cornelisse, R., & Charles, P. (2009). Dynamical constraints on the neutron star mass in EXO 0748-676. Monthly Notices of the Royal Astronomical Society, 394, L136-L140

FORS in the Era of Second Generation VLT Instrumentation (2009)
Journal Article
O'Brien, K. (2009). FORS in the Era of Second Generation VLT Instrumentation

The Variable Star One-shot Project, and its little child: Wikimbad (2008)
Other
Foellmi, C., Dall, T., Pritchard, J., Allende Prieto, C., Bruntt, H., Amado, P., …Osuna, P. (2008). The Variable Star One-shot Project, and its little child: Wikimbad

ULTRASPEC: High-speed spectroscopy with zero readout noise (2008)
Other
Dhillon, V., Marsh, T., Copperwheat, C., Bezawada, N., Ives, D., Vick, A., …Shearer, A. (2008). ULTRASPEC: High-speed spectroscopy with zero readout noise

Photometry with FORS (2008)
Other
Freudling, W., Møller, P., Patat, F., Moehler, S., Romaniello, M., Jehin, E., …Kerber, F. (2008). Photometry with FORS

Modelling the Fringing of the FORS2 CCD (2008)
Other
Walsh, J., Kuntschner, H., Jehin, E., Kaufer, A., O'Brien, K., Riquelme, M., …Kerber, F. (2008). Modelling the Fringing of the FORS2 CCD

FORS2 HIT Mode: Phase Resolved Spectroscopy of RXJ0806.3+1527 (2008)
Other
Mason, E., Israel, G. L., O'Brien, K., Ryan, O., & Shearer, A. (2008). FORS2 HIT Mode: Phase Resolved Spectroscopy of RXJ0806.3+1527

Polarimetric Signatures of Infrared Jets in X-ray Binaries (2008)
Other
Shahbaz, T., Fender, R., Watson, C., O'Brien, K., Wachter, S., Gelino, D., & Gelino, C. R. (2008). Polarimetric Signatures of Infrared Jets in X-ray Binaries

IOT Overview: Optical Multi-Object Spectrographs (2008)
Other
Schmidtobreick, L., Bagnulo, S., Jehin, E., Marconi, G., O'Brien, K., Pompei, E., …Kerber, F. (2008). IOT Overview: Optical Multi-Object Spectrographs

Echo Tomography of Cygnus X-2 (2008)
Other
Hynes, R. I., Robinson, E. L., Bayless, A., O'Brien, K., Wachter, S., Gelino, D., & Gelino, C. R. (2008). Echo Tomography of Cygnus X-2

Bowen Blend Echo-Tomography of Sco X-l and V801 Ara (2008)
Other
Muñoz-Darias, T., Martínee-Pails, I., Casares, J., Cornelisse, R., Dhillon, V., Marsh, T., …Gelino, C. R. (2008). Bowen Blend Echo-Tomography of Sco X-l and V801 Ara

Fast Spectroscopy and Imaging with the FORS2 HIT Mode (2008)
Other
O'Brien, K., Leahy, D. A., & Hobill, D. W. (2008). Fast Spectroscopy and Imaging with the FORS2 HIT Mode

An Overview of the Bowen Survey: Detecting Donor Star Signatures in Low Mass X-ray Binaries (2008)
Other
Cornelisse, R., Casares, J., Muñoz-Darias, T., Steeghs, D., Charles, P., Hynes, R., …Gelino, C. R. (2008). An Overview of the Bowen Survey: Detecting Donor Star Signatures in Low Mass X-ray Binaries

Bowen blend echo-tomography of low mass X-ray binaries (2008)
Other
Muñoz-Darias, T., Martínez-Pais, I., Casares, J., Cornelisse, R., Dhillon, V., Marsh, T., …Shearer, A. (2008). Bowen blend echo-tomography of low mass X-ray binaries

Bowen Blend Echo-tomography of Neutron Star LMXBs (2008)
Other
Muñoz-Darias, T., Martinez-Pais, I. G., Casares, J., Dhillon, V., Marsh, T., Steeghs, D., …Cornelisse, R. (2008). Bowen Blend Echo-tomography of Neutron Star LMXBs

The First Polarimetric Signatures of Infrared Jets in X-Ray Binaries (2008)
Journal Article
Shahbaz, T., Fender, R., Watson, C., & O'Brien, K. (2008). The First Polarimetric Signatures of Infrared Jets in X-Ray Binaries. Astrophysical Journal, 672, https://doi.org/10.1086/523793

Photometry with FORS at the ESO VLT (2007)
Other
Freudling, W., Romaniello, M., Patat, F., Møller, P., Jehin, E., & O'Brien, K. (2007). Photometry with FORS at the ESO VLT

ULTRASPEC: High-speed Spectroscopy with Zero Read-out Noise (2007)
Journal Article
Dhillon, V., Marsh, T., Copperwheat, C., Bezawada, N., Ives, D., Vick, A., & O'Brien, K. (2007). ULTRASPEC: High-speed Spectroscopy with Zero Read-out Noise

Kinematical studies of the low-mass X-ray binary GRMus (XB1254-690) (2007)
Journal Article
Barnes, A., Casares, J., Cornelisse, R., Charles, P., Steeghs, D., Hynes, R., & O'Brien, K. (2007). Kinematical studies of the low-mass X-ray binary GRMus (XB1254-690). Monthly Notices of the Royal Astronomical Society, 380, 1182-1190

Towards Precision Photometry with FORS: A Status Report (2007)
Journal Article
Freudling, W., Møller, P., Patat, F., Moehler, S., Romaniello, M., Jehin, E., …Järvinen, A. (2007). Towards Precision Photometry with FORS: A Status Report

A signature of the donor star in the extra-galactic X-ray binary LMCX-2 (2007)
Journal Article
Cornelisse, R., Steeghs, D., Casares, J., Charles, P., Shih, I., Hynes, R., & O'Brien, K. (2007). A signature of the donor star in the extra-galactic X-ray binary LMCX-2. Monthly Notices of the Royal Astronomical Society, 381, 194-200

VSOP: the variable star one-shot project. I. Project presentation and first data release (2007)
Journal Article
Dall, T., Foellmi, C., Pritchard, J., Lo Curto, G., Allende Prieto, C., Bruntt, H., …Sterzik, M. (2007). VSOP: the variable star one-shot project. I. Project presentation and first data release. Astronomy and Astrophysics, 470, 1201-1214

Optical spectroscopy of the low-mass X-ray binary GX9+9 (2007)
Journal Article
Cornelisse, R., Steeghs, D., Casares, J., Charles, P., Barnes, A., Hynes, R., & O'Brien, K. (2007). Optical spectroscopy of the low-mass X-ray binary GX9+9. Monthly Notices of the Royal Astronomical Society, 380, 1219-1229

A detection of the donor star of Aquila X-1 during its 2004 outburst? (2007)
Journal Article
Cornelisse, R., Casares, J., Steeghs, D., Barnes, A., Charles, P., Hynes, R., & O'Brien, K. (2007). A detection of the donor star of Aquila X-1 during its 2004 outburst?. Monthly Notices of the Royal Astronomical Society, 375, 1463-1470

ULTRACAM: an ultrafast, triple-beam CCD camera for high-speed astrophysics (2007)
Journal Article
Dhillon, V., Marsh, T., Stevenson, M., Atkinson, D., Kerry, P., Peacocke, P., …O'Brien, K. (2007). ULTRACAM: an ultrafast, triple-beam CCD camera for high-speed astrophysics. Monthly Notices of the Royal Astronomical Society, 378, 825-840

FORS1 is getting Blue: New Blue Optimised Detectors and High Throughput Filters (2007)
Journal Article
Szeifert, T., Reiss, R., Baksai, P., Deiries, S., Izzo, C., Jehin, E., …Shen, T. (2007). FORS1 is getting Blue: New Blue Optimised Detectors and High Throughput Filters

Multiwavelength Observations of EXO 0748-676. II. Emission-Line Behavior (2006)
Journal Article
Pearson, K., Hynes, R., Steeghs, D., Jonker, P., Haswell, C., King, A., …Méndez, M. (2006). Multiwavelength Observations of EXO 0748-676. II. Emission-Line Behavior. Astrophysical Journal, 648, 1169-1180

Detection of the irradiated donor in the LMXBs 4U 1636-536 (=V801 Ara) and 4U 1735-444 (=V926 Sco) (2006)
Journal Article
Casares, J., Cornelisse, R., Steeghs, D., Charles, P., Hynes, R., O'Brien, K., & Strohmayer, T. (2006). Detection of the irradiated donor in the LMXBs 4U 1636-536 (=V801 Ara) and 4U 1735-444 (=V926 Sco). Monthly Notices of the Royal Astronomical Society, 373, 1235-1244

Optical identification of IGR J19140+0951 (2006)
Journal Article
in't Zand, J., Jonker, P., Nelemans, G., Steeghs, D., & O'Brien, K. (2006). Optical identification of IGR J19140+0951. Astronomy and Astrophysics, 448, 1101-1106

Multiwavelength Observations of EXO 0748-676. I. Reprocessing of X-Ray Bursts (2006)
Journal Article
Hynes, R., Horne, K., O'Brien, K., Haswell, C., Robinson, E., King, A., …Pearson, K. (2006). Multiwavelength Observations of EXO 0748-676. I. Reprocessing of X-Ray Bursts. Astrophysical Journal, 648, 1156-1168

The 2003 radio outburst of a new X-ray transient: XTE J1720-318 (2005)
Journal Article
Brocksopp, C., Corbel, S., Fender, R., Rupen, M., Sault, R., Tingay, S., …O'Brien, K. (2005). The 2003 radio outburst of a new X-ray transient: XTE J1720-318. Monthly Notices of the Royal Astronomical Society, 356, 125-130

Chandra imaging of IGR J16493-4348 (2005)
Journal Article
Kuiper, L., Jonker, P., Hermsen, W., & O'Brien, K. (2005). Chandra imaging of IGR J16493-4348

GRB 050520: VLT/ULTRACAM observations (2005)
Journal Article
Vreeswijk, P., Marsh, T., Littlefair, S., Dhillon, V., & O'Brien, K. (2005). GRB 050520: VLT/ULTRACAM observations

Disentangling X-ray Reprocessing Sites in EXO 0748-676 (2004)
Other
Hynes, R., Haswell, C., Robinson, E., Horne, K., O'Brien, K., Charles, P., …Sion, E. (2004). Disentangling X-ray Reprocessing Sites in EXO 0748-676

Rapid Keck Spectroscopy of Cataclysmic Variables (2004)
Other
Skidmore, W., Horne, K., Pearson, K., Gomer, R., O'Brien, K., Oke, B., & Sion, E. (2004). Rapid Keck Spectroscopy of Cataclysmic Variables

High Speed Keck Spectroscopy of Flickering in AM Her (2004)
Other
Skidmore, W., Gomer, R., Horne, K., O'Brien, K., Oke, B., Pearson, K., & Cropper, M. (2004). High Speed Keck Spectroscopy of Flickering in AM Her

Bowen Fluorescence from Companion Stars in X-ray Binaries (2004)
Other
Casares, J., Steeghs, D., Hynes, R., Charles, P., Cornelisse, R., O'Brien, K., & Sion, E. (2004). Bowen Fluorescence from Companion Stars in X-ray Binaries

The Visit of Prof. R. Sunayev and the Topical Meeting "Accretion onto Compact Objects" (2004)
Journal Article
Alloin, D., Mason, E., & O'Brien, K. (2004). The Visit of Prof. R. Sunayev and the Topical Meeting "Accretion onto Compact Objects"

Spectroscopy of the optical counterpart to Ser X-1 (2004)
Journal Article
Hynes, R., Charles, P., van Zyl, L., Barnes, A., Steeghs, D., O'Brien, K., & Casares, J. (2004). Spectroscopy of the optical counterpart to Ser X-1. Monthly Notices of the Royal Astronomical Society, 348, 100-104

High-speed Keck II and RXTE spectroscopy of Cygnus X-2 - I. Three X-ray components revealed by correlated variability (2004)
Journal Article
O'Brien, K., Horne, K., Gomer, R. H., Oke, J., & van der Klis, M. (2004). High-speed Keck II and RXTE spectroscopy of Cygnus X-2 - I. Three X-ray components revealed by correlated variability. Monthly Notices of the Royal Astronomical Society, 350, 587-595

The Distance and Interstellar Sight Line to GX 339-4 (2004)
Journal Article
Hynes, R., Steeghs, D., Casares, J., Charles, P., & O'Brien, K. (2004). The Distance and Interstellar Sight Line to GX 339-4. Astrophysical Journal, 609, 317-324

X-ray/UV correlations in XTE J1118+480: disc, jet, or something else? (2003)
Other
Hynes, R., Haswell, C., Chaty, S., Cui, W., Shrader, C., O'Brien, K., …Rodriguez, J. (2003). X-ray/UV correlations in XTE J1118+480: disc, jet, or something else?

Dynamical Evidence for a Black Hole in GX339-4 (2003)
Other
Hynes, R., Steeghs, D., Casares, J., Charles, P., & O'Brien, K. (2003). Dynamical Evidence for a Black Hole in GX339-4

Improved IR (ISAAC/VLT) and radio (ATCA) astrometry of the likely counterpart to XTE J1720-318 (2003)
Journal Article
O'Brien, K., Clarke, F., Fender, R., Brocksopp, C., Steeghs, D., Hynes, R., & Charles, P. (2003). Improved IR (ISAAC/VLT) and radio (ATCA) astrometry of the likely counterpart to XTE J1720-318

Dynamical Evidence for a Black Hole in GX 339-4 (2003)
Journal Article
Hynes, R., Steeghs, D., Casares, J., Charles, P., & O'Brien, K. (2003). Dynamical Evidence for a Black Hole in GX 339-4. Astrophysical Journal, 583, L95-L98

The remarkable rapid X-ray, ultraviolet, optical and infrared variability in the black hole XTE J1118+480 (2003)
Journal Article
Hynes, R., Haswell, C., Cui, W., Shrader, C., O'Brien, K., Chaty, S., …Horne, K. (2003). The remarkable rapid X-ray, ultraviolet, optical and infrared variability in the black hole XTE J1118+480. Monthly Notices of the Royal Astronomical Society, 345, 292-310

Bowen Fluorescence from the Companion Star in X1822-371 (2003)
Journal Article
Casares, J., Steeghs, D., Hynes, R., Charles, P., & O'Brien, K. (2003). Bowen Fluorescence from the Companion Star in X1822-371. Astrophysical Journal, 590, 1041-1048

High-speed Keck spectroscopy of flares and oscillations in AE Aquarii (2003)
Journal Article
Skidmore, W., O'Brien, K., Horne, K., Gomer, R., Oke, J., & Pearson, K. (2003). High-speed Keck spectroscopy of flares and oscillations in AE Aquarii. Monthly Notices of the Royal Astronomical Society, 338, 1057-1066

Fireballs and oscillations in AE Aqr (2002)
Other
Skidmore, W., Pearson, K., O'Brien, K., Horne, K., Gomer, R., Beuermann, K., & Reinsch, K. (2002). Fireballs and oscillations in AE Aqr

Echoes in X-ray binaries (2002)
Journal Article
O'Brien, K., Horne, K., Hynes, R., Chen, W., Haswell, C., & Still, M. (2002). Echoes in X-ray binaries. Monthly Notices of the Royal Astronomical Society, 334, 426-434

Spectral, polarization and time-lag properties of GRS 1915+105 radio oscillations (2002)
Journal Article
Fender, R., Rayner, D., Trushkin, S., O'Brien, K., Sault, R., Pooley, G., & Norris, R. (2002). Spectral, polarization and time-lag properties of GRS 1915+105 radio oscillations. Monthly Notices of the Royal Astronomical Society, 330, 212-218

Echoes in X-ray Binaries: Mapping the Accretion Flow (2001)
Other
O'Brien, K., Horne, K., Steeghs, D., & Cuypers, J. (2001). Echoes in X-ray Binaries: Mapping the Accretion Flow

Rapid optical spectroscopy of X-ray binaries with Keck II (2001)
Other
O'Brien, K. (2001). Rapid optical spectroscopy of X-ray binaries with Keck II

RXTE Observations of Hercules X-1 during the 1998 July Short High State (2001)
Journal Article
Still, M., O'Brien, K., Horne, K., Hudson, D., Boroson, B., Vrtilek, S. D., …Fiedler, H. (2001). RXTE Observations of Hercules X-1 during the 1998 July Short High State. Astrophysical Journal, 553, 776-787

Atmospheric Reflection during an Anomalous Low State of Hercules X-1 (2001)
Journal Article
Still, M., O'Brien, K., Horne, K., Boroson, B., Titarchuk, L. G., Engle, K., …Fiedler, H. (2001). Atmospheric Reflection during an Anomalous Low State of Hercules X-1. Astrophysical Journal, 554, 352-361

Keck II spectroscopy of mHz quasi-periodic oscillations in Hercules X-1 (2001)
Journal Article
O'Brien, K., Horne, K., Boroson, B., Still, M., Gomer, R., Oke, J., …Vrtilek, S. (2001). Keck II spectroscopy of mHz quasi-periodic oscillations in Hercules X-1. Monthly Notices of the Royal Astronomical Society, 326, 1067-1075

Emission-line oscillations in the dwarf nova V2051 Ophiuchi (2001)
Journal Article
Steeghs, D., O'Brien, K., Horne, K., Gomer, R., & Oke, J. (2001). Emission-line oscillations in the dwarf nova V2051 Ophiuchi. Monthly Notices of the Royal Astronomical Society, 323, 484-496

Multiwavelength Studies of Hercules X-1 during Short High and Anomalous Low States: On-again, Off-again (2001)
Journal Article
Vrtilek, S., Quaintrell, H., Boroson, B., Still, M., Fiedler, H., O'Brien, K., & McCray, R. (2001). Multiwavelength Studies of Hercules X-1 during Short High and Anomalous Low States: On-again, Off-again. Astrophysical Journal, 549, 522-536

Atmospheric reflection during the anomalous low-state of Hercules X-1 (2000)
Other
Still, M., O'Brien, K., Horne, K., Boroson, B., Vrtilek, S., Titarchuk, L., …Fiedler, H. (2000). Atmospheric reflection during the anomalous low-state of Hercules X-1

Correlated X-ray and optical variability in X-ray Binaries (2000)
Other
O'Brien, K., & Horne, K. (2000). Correlated X-ray and optical variability in X-ray Binaries

Discovery of Millihertz ULTRAVIOLET Quasi-periodic Oscillations in Hercules X-1 (2000)
Journal Article
Boroson, B., O'Brien, K., Horne, K., Kallman, T., Still, M., Boyd, P. T., …Vrtilek, S. D. (2000). Discovery of Millihertz ULTRAVIOLET Quasi-periodic Oscillations in Hercules X-1. Astrophysical Journal, 545, 399-406

Yet Another Multi wavelength Campaign on Hercules X-1/HZ Herculis (1999)
Other
Vrtilek, S., Boroson, B., Still, M., Fiedler, H., Quaintrell, H., & O'Brien, K. (1999). Yet Another Multi wavelength Campaign on Hercules X-1/HZ Herculis

Optical and near-IR observations of XTE J1859+226 (1999)
Journal Article
Hynes, R., Haswell, C., Norton, A., Chaty, S., Rolfe, D., Lott, D., …Wagner, R. (1999). Optical and near-IR observations of XTE J1859+226

XTE J1859+226 (1999)
Journal Article
Hynes, R., Haswell, C., Norton, A., Chaty, S., Solheim, J., Ostensen, R., …Ivison, R. (1999). XTE J1859+226

Echo-sounding the accretion disks of X-ray binaries (1998)
Other
Still, M., O'Brien, K., & Horne, K. (1998). Echo-sounding the accretion disks of X-ray binaries

The 1996 Outburst of GRO J1655-40: The Challenge of Interpreting the Multiwavelength Spectra (1998)
Other
Hynes, R., Haswell, C., Shrader, C., Chen, W., Horne, K., Harlaftis, E., …Woodward, C. (1998). The 1996 Outburst of GRO J1655-40: The Challenge of Interpreting the Multiwavelength Spectra

The 1996 Outburst of GRO J1655-40 (1998)
Other
Hynes, R., Haswell, C., Fender, R., Shrader, C., Chen, W., Horne, K., …Woodward, C. (1998). The 1996 Outburst of GRO J1655-40

An Observatory for Mapping Stellar Accretion Discs (1998)
Other
Still, M., O'Brien, K., & Horne, K. (1998). An Observatory for Mapping Stellar Accretion Discs

Echoes from an irradiated disc in GRO J1655-40 (1998)
Journal Article
Hynes, R., O'Brien, K., Horne, K., Chen, W., & Haswell, C. (1998). Echoes from an irradiated disc in GRO J1655-40. Monthly Notices of the Royal Astronomical Society, 299, L37-L41

Faint galaxies close to QSOs with damped Lyman alpha absorption systems (1996)
Journal Article
Aragon-Salamanca, A., Ellis, R. S., & O'Brien, K. S. (1996). Faint galaxies close to QSOs with damped Lyman alpha absorption systems. Monthly Notices of the Royal Astronomical Society, 281, 945-952