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The Galactic high mass X-ray binary population with Fermi-LAT (2022)
Journal Article
Harvey, M., Rulten, C. B., & Chadwick, P. M. (2022). The Galactic high mass X-ray binary population with Fermi-LAT. Monthly Notices of the Royal Astronomical Society, 512(1), 1141-1168. https://doi.org/10.1093/mnras/stac375

We search for γ-ray emission from 114 Galactic high-mass X-ray binaries, including four well studied catalogued sources, in 12.5 yr of Fermi-LAT data in conjunction with the 10-yr point source catalogue. Where a γ-ray excess appears to be spatially c... Read More about The Galactic high mass X-ray binary population with Fermi-LAT.

Gadolinium loaded Cherenkov detectors for neutron monitoring in high energy air showers (2022)
Journal Article
Stowell, P., Fargher, S., Thompson, L., Brown, A., & Chadwick, P. (2022). Gadolinium loaded Cherenkov detectors for neutron monitoring in high energy air showers. Journal of Instrumentation, 17(02), https://doi.org/10.1088/1748-0221/17/02/t02005

Monitoring of high energy cosmic ray neutrons is of particular interest for cosmic ray water Cherenkov detectors as intense bundles of delayed neutrons have been found to arrive after the initial passage of a high energy air shower. In this paper we... Read More about Gadolinium loaded Cherenkov detectors for neutron monitoring in high energy air showers.

Concept validation of a high dynamic range point-diffraction interferometer for wavefront sensing in adaptive optics (2022)
Journal Article
Dubost, N., Bharmal, N. A., Dubbeldam, M., & Myers, R. M. (2022). Concept validation of a high dynamic range point-diffraction interferometer for wavefront sensing in adaptive optics. Applied Optics, 61(14), 4160-4167. https://doi.org/10.1364/ao.439569

The direct detection and imaging of exoplanets requires the use of high-contrast adaptive optics (AO). In these systems quasi-static aberrations need to be highly corrected and calibrated. To achieve this, the pupil-modulated point-diffraction interf... Read More about Concept validation of a high dynamic range point-diffraction interferometer for wavefront sensing in adaptive optics.

On-sky results for the integrated microlens ring tip-tilt sensor (2021)
Journal Article
Hottinger, P., Harris, R. J., Crass, J., Dietrich, P., Blaicher, M., Bechter, A., …Quirrenbach, A. (2021). On-sky results for the integrated microlens ring tip-tilt sensor. Journal of the Optical Society of America B, 38(9), https://doi.org/10.1364/josab.421459

We present the first on-sky results of the microlens ring tip-tilt sensor. This sensor uses a 3D printed microlens ring feeding six multimode fibers to sense misaligned light, allowing centroid reconstruction. A tip-tilt mirror allows the beam to be... Read More about On-sky results for the integrated microlens ring tip-tilt sensor.

Scintillation-limited photometry with the 20-cm NGTS telescopes at Paranal Observatory (2021)
Journal Article
O’Brien, S. M., Bayliss, D., Osborn, J., Bryant, E. M., McCormac, J., Wheatley, P. J., …West, R. G. (2022). Scintillation-limited photometry with the 20-cm NGTS telescopes at Paranal Observatory. Monthly Notices of the Royal Astronomical Society, 509(4), 6111-6118. https://doi.org/10.1093/mnras/stab3399

Ground-based photometry of bright stars is expected to be limited by atmospheric scintillation, although in practice observations are often limited by other sources of systematic noise. We analyse 122 nights of bright star (Gmag ≲ 11.5) photometry us... Read More about Scintillation-limited photometry with the 20-cm NGTS telescopes at Paranal Observatory.

Probing the physical properties of the intergalactic medium using blazars (2021)
Journal Article
Dalton, T., Morris, S. L., Fumagalli, M., & Gatuzz, E. (2021). Probing the physical properties of the intergalactic medium using blazars. Monthly Notices of the Royal Astronomical Society, 508(2), 1701-1718. https://doi.org/10.1093/mnras/stab2597

We use Swift blazar spectra to estimate the key intergalactic medium (IGM) properties of hydrogen column density (NHXIGM), metallicity, and temperature over a redshift range of 0.03 ≤ z ≤ 4.7, using a collisional ionization equilibrium model for the... Read More about Probing the physical properties of the intergalactic medium using blazars.

The high-energy Sun - probing the origins of particle acceleration on our nearest star (2021)
Journal Article
Matthews, S., Reid, H., Baker, D., Bloomfield, D., Browning, P., Calcines, A., …Vilmer, N. (2022). The high-energy Sun - probing the origins of particle acceleration on our nearest star. Experimental Astronomy, 54, 335-360. https://doi.org/10.1007/s10686-021-09798-6

As a frequent and energetic particle accelerator, our Sun provides us with an excellent astrophysical laboratory for understanding the fundamental process of particle acceleration. The exploitation of radiative diagnostics from electrons has shown th... Read More about The high-energy Sun - probing the origins of particle acceleration on our nearest star.

Scintillating thermal neutron detectors for cosmic ray soil moisture monitoring (2021)
Journal Article
Stowell, P., Fargher, S., Steer, C., & Thompson, L. (2021). Scintillating thermal neutron detectors for cosmic ray soil moisture monitoring. Journal of Instrumentation, 16(11), Article P11039. https://doi.org/10.1088/1748-0221/16/11/p11039

Cosmic Ray Neutron Sensing (CRNS) is a powerful technique that allows non-invasive monitoring of soil moisture on length scales well matched for agricultural applications. One factor limiting the use of the technique within industrial agriculture set... Read More about Scintillating thermal neutron detectors for cosmic ray soil moisture monitoring.

Astrosat: forecasting satellite transits for optical astronomical observations (2021)
Journal Article
Osborn, J., Blacketer, L., Townson, M. J., & Farley, O. J. (2022). Astrosat: forecasting satellite transits for optical astronomical observations. Monthly Notices of the Royal Astronomical Society, 509(2), 1848-1852. https://doi.org/10.1093/mnras/stab3003

The impact of large-scale constellations of satellites, is a concern for ground-based astronomers. In recent years there has been a significant increase in the number of satellites in low-Earth orbit and this trend is set to continue. The large numbe... Read More about Astrosat: forecasting satellite transits for optical astronomical observations.

Magnetic imaging of the outer solar atmosphere (MImOSA) (2021)
Journal Article
Peter, H., Ballester, E. A., Andretta, V., Auchère, F., Belluzzi, L., Bemporad, A., …Bueno, J. T. (2021). Magnetic imaging of the outer solar atmosphere (MImOSA). Experimental Astronomy, https://doi.org/10.1007/s10686-021-09774-0

The magnetic activity of the Sun directly impacts the Earth and human life. Likewise, other stars will have an impact on the habitability of planets orbiting these host stars. Although the magnetic field at the surface of the Sun is reasonably well c... Read More about Magnetic imaging of the outer solar atmosphere (MImOSA).

Full spectrum fluorescence lifetime imaging with 0.5 nm spectral and 50 ps temporal resolution (2021)
Journal Article
Williams, G. O., Williams, E., Finlayson, N., Erdogan, A. T., Wang, Q., Fernandes, S., …Bradley, M. (2021). Full spectrum fluorescence lifetime imaging with 0.5 nm spectral and 50 ps temporal resolution. Nature Communications, 12, Article 6616. https://doi.org/10.1038/s41467-021-26837-0

The use of optical techniques to interrogate wide ranging samples from semiconductors to biological tissue for rapid analysis and diagnostics has gained wide adoption over the past decades. The desire to collect ever more spatially, spectrally and te... Read More about Full spectrum fluorescence lifetime imaging with 0.5 nm spectral and 50 ps temporal resolution.

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.

HiPERCAM: a quintuple-beam, high-speed optical imager on the 10.4-m Gran Telescopio Canarias (2021)
Journal Article
Dhillon, V., Bezawada, N., Black, M., Dixon, S., Gamble, T., Gao, X., …García-Alvarez, D. (2021). HiPERCAM: a quintuple-beam, high-speed optical imager on the 10.4-m Gran Telescopio Canarias. Monthly Notices of the Royal Astronomical Society, 507(1), 350-366. https://doi.org/10.1093/mnras/stab2130

HiPERCAM is a portable, quintuple-beam optical imager that saw first light on the 10.4-m Gran Telescopio Canarias (GTC) in 2018. The instrument uses re-imaging optics and four dichroic beamsplitters to record usgsrsiszs (320–1060 nm) images simultane... Read More about HiPERCAM: a quintuple-beam, high-speed optical imager on the 10.4-m Gran Telescopio Canarias.

Chronos: A NIR spectroscopic galaxy survey to probe the most fundamental stages of galaxy evolution (2021)
Journal Article
Ferreras, I., Cropper, M., Sharples, R., Bland-Hawthorn, J., Bruzual, G., Charlot, S., …Windhorst, R. (2021). Chronos: A NIR spectroscopic galaxy survey to probe the most fundamental stages of galaxy evolution. Experimental Astronomy, 51(3), https://doi.org/10.1007/s10686-021-09702-2

We propose a dedicated, ultra-deep spectroscopic survey in the near infrared (NIR), that will target a mass-limited sample of galaxies during two of the most fundamental epochs of cosmic evolution: the formation of the first galaxies (at z ≳ 6; cosmi... Read More about Chronos: A NIR spectroscopic galaxy survey to probe the most fundamental stages of galaxy evolution.

V404 Cygni with Fermi-LAT (2021)
Journal Article
Harvey, M., Rulten, C. B., & Chadwick, P. M. (2021). V404 Cygni with Fermi-LAT. Monthly Notices of the Royal Astronomical Society, 506(4), 6029-6038. https://doi.org/10.1093/mnras/stab2097

We revisit the well-studied outburst of the low-mass X-ray binary (LMXB) system V404 Cygni, and claims of γ-ray excesses observed with the Fermi-LAT instrument. Upon analysing an 11.5 yr data set with the 8-yr LAT point source catalogue and 8-yr back... Read More about V404 Cygni with Fermi-LAT.