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Outputs (1101)

The VLT LBG redshift survey – VI. Mapping H i in the proximity of z ∼ 3 LBGs with X-Shooter (2017)
Journal Article
Bielby, R., Shanks, T., Crighton, N., Bornancini, C., Infante, L., Lambas, D., …Tummuangpak, P. (2017). The VLT LBG redshift survey – VI. Mapping H i in the proximity of z ∼ 3 LBGs with X-Shooter. Monthly Notices of the Royal Astronomical Society, 471(2), 2174-2186. https://doi.org/10.1093/mnras/stx1772

We present an analysis of the spatial distribution and dynamics of neutral hydrogen gas around galaxies using new X-Shooter observations of z ∼ 2.5–4 quasars. Adding the X-Shooter data to our existing data set of high-resolution quasar spectroscopy,... Read More about The VLT LBG redshift survey – VI. Mapping H i in the proximity of z ∼ 3 LBGs with X-Shooter.

Modelling synthetic atmospheric turbulence profiles with temporal variation using Gaussian mixture model (2018)
Journal Article
Jia, P., Osborn, J., Kong, L., Laidlaw, D., Li, C., Farley, O., & Xue, G. (2018). Modelling synthetic atmospheric turbulence profiles with temporal variation using Gaussian mixture model. Monthly Notices of the Royal Astronomical Society, 480(2), 2466-2474. https://doi.org/10.1093/mnras/sty1951

The atmospheric turbulence profile plays a very important role for performance evaluation of wide-field adaptive optic systems. Since the atmospheric turbulence is evolving, the turbulence profile will change with time. To better model the temporal v... Read More about Modelling synthetic atmospheric turbulence profiles with temporal variation using Gaussian mixture model.

Comparative Study of Neural Network Frameworks for the Next Generation of Adaptive Optics Systems (2017)
Journal Article
González-Gutiérrez, C., Santos, J., Martínez-Zarzuela, M., Basden, A., Osborn, J., Díaz-Pernas, F., & De Cos Juez, F. (2017). Comparative Study of Neural Network Frameworks for the Next Generation of Adaptive Optics Systems. Sensors, 17(6), Article 1263. https://doi.org/10.3390/s17061263

Many of the next generation of adaptive optics systems on large and extremely large telescopes require tomographic techniques in order to correct for atmospheric turbulence over a large field of view. Multi-object adaptive optics is one such techniqu... Read More about Comparative Study of Neural Network Frameworks for the Next Generation of Adaptive Optics Systems.

Hunting for eclipses: high-speed observations of cataclysmic variables (2016)
Journal Article
Hardy, L., McAllister, M., Dhillon, V., Littlefair, S., Bours, M., Breedt, E., …Woudt, P. (2017). Hunting for eclipses: high-speed observations of cataclysmic variables. Monthly Notices of the Royal Astronomical Society, 465(4), 4968-4984. https://doi.org/10.1093/mnras/stw3051

We present new time-resolved photometry of 74 cataclysmic variables (CVs), 47 of which are eclipsing. Thirteen of these eclipsing systems are newly discovered. For all 47 eclipsing systems, we show high cadence (1–20 s) light curves obtained with the... Read More about Hunting for eclipses: high-speed observations of cataclysmic variables.

Characterisation and testing of CHEC-M—A camera prototype for the small-sized telescopes of the Cherenkov telescope array (2018)
Journal Article
Zorn, J., White, R., Watson, J., Armstrong, T., Balzer, A., Barcelo, M., …Zink, A. (2018). Characterisation and testing of CHEC-M—A camera prototype for the small-sized telescopes of the Cherenkov telescope array. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 904, 44-63. https://doi.org/10.1016/j.nima.2018.06.078

The Compact High Energy Camera (CHEC) is a camera design for the Small-Sized Telescopes (SSTs; 4 m diameter mirror) of the Cherenkov Telescope Array (CTA). The SSTs are focused on very-high-energy -ray detection via atmospheric Cherenkov light detect... Read More about Characterisation and testing of CHEC-M—A camera prototype for the small-sized telescopes of the Cherenkov telescope array.

Flares, wind and nebulae: the 2015 December mini-outburst of V404 Cygni (2016)
Journal Article
Muñoz-Darias, T., Casares, J., Mata Sánchez, D., Fender, R., Armas Padilla, M., Mooley, K., …Wilson, R. (2017). Flares, wind and nebulae: the 2015 December mini-outburst of V404 Cygni. Monthly Notices of the Royal Astronomical Society: Letters, 465(1), L124-L128. https://doi.org/10.1093/mnrasl/slw222

After more than 26 years in quiescence, the black hole transient V404 Cyg went into a luminous outburst in 2015 June, and additional activity was detected in late December of the same year. Here, we present an optical spectroscopic follow-up of the D... Read More about Flares, wind and nebulae: the 2015 December mini-outburst of V404 Cygni.

Projected Pupil Plane Pattern: an alternative LGS wavefront sensing technique (2018)
Journal Article
Yang, H., Bharmal, N. A., & Myers, R. M. (2018). Projected Pupil Plane Pattern: an alternative LGS wavefront sensing technique. Monthly Notices of the Royal Astronomical Society, 477(4), 4443-4453. https://doi.org/10.1093/mnras/sty926

We have analysed and simulated a novel alternative Laser Guide Star (LGS) configuration termed Projected Pupil Plane Pattern (PPPP), including wavefront sensing and the reconstruction method. A key advantage of this method is that a collimated beam i... Read More about Projected Pupil Plane Pattern: an alternative LGS wavefront sensing technique.

Probing the intra-group medium of a z = 0.28 galaxy group (2017)
Journal Article
Bielby, R., Crighton, N., Fumagalli, M., Morris, S., Stott, J., Tejos, N., & Cantalupo, S. (2017). Probing the intra-group medium of a z = 0.28 galaxy group. Monthly Notices of the Royal Astronomical Society, 468(2), 1373-1386. https://doi.org/10.1093/mnras/stx528

We present new MUSE observations of a galaxy group probed by a background quasar. The quasar sightline passes between multiple z = 0.28 galaxies, whilst showing at the same redshift low-ionized metal line species, including Ca ii, Mg i, Mg ii and Fe ... Read More about Probing the intra-group medium of a z = 0.28 galaxy group.

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

On-sky demonstration of matched filters for wavefront measurements using ELT-scale elongated laser guide stars (2017)
Journal Article
Basden, A., Bardou, L., Bonaccini-Calia, D., Buey, T., Centrone, M., Chemla, F., …Vidal, F. (2017). On-sky demonstration of matched filters for wavefront measurements using ELT-scale elongated laser guide stars. Monthly Notices of the Royal Astronomical Society, 466(4), 5003-5010. https://doi.org/10.1093/mnras/stx062

The performance of adaptive optics systems is partially dependent on the algorithms used within the real-time control system to compute wavefront slope measurements. We demonstrate the use of a matched filter algorithm for the processing of elongated... Read More about On-sky demonstration of matched filters for wavefront measurements using ELT-scale elongated laser guide stars.

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,