Outputs (1105)

Overview of new MAST physics in anticipation of first results from MAST Upgrade (2019)
Journal Article
Harrison, J., Akers, R., Allan, S., Allcock, J., Allen, J., Appel, L., Barnes, M., Ben Ayed, N., Boeglin, W., Bowman, C., Bradley, J., Browning, P., Bryant, P., Carr, M., Cecconello, M., Challis, C., Chapman, S., Chapman, I., Colyer, G., Conroy, S., …Team, T. E. M. (2019). Overview of new MAST physics in anticipation of first results from MAST Upgrade. Nuclear Fusion, 59(11), Article 112011. https://doi.org/10.1088/1741-4326/ab121c

The mega amp spherical tokamak (MAST) was a low aspect ratio device (R/a  =  0.85/0.65 ~ 1.3) with similar poloidal cross-section to other medium-size tokamaks. The physics programme concentrates on addressing key physics issues for the operation of... Read More about Overview of new MAST physics in anticipation of first results from MAST Upgrade.

A CMOS SPAD Line Sensor With Per-Pixel Histogramming TDC for Time-Resolved Multispectral Imaging (2019)
Journal Article
Erdogan, A. T., Walker, R., Finlayson, N., Krstajic, N., Williams, G., Girkin, J., & Henderson, R. (2019). A CMOS SPAD Line Sensor With Per-Pixel Histogramming TDC for Time-Resolved Multispectral Imaging. IEEE Journal of Solid-State Circuits, 54(6), 1705-1719. https://doi.org/10.1109/jssc.2019.2894355

A 512 × 16 single photon avalanche diode (SPAD)-based line sensor is designed in a 0.13- μm CMOS image sensor technology for time-resolved multispectral beam scanned imaging. The sensor has 23.78- μm pixel pitch and incorporates one SPAD array with 4... Read More about A CMOS SPAD Line Sensor With Per-Pixel Histogramming TDC for Time-Resolved Multispectral Imaging.

Coulomb anti-blockade in a Rydberg gas (2019)
Journal Article
Bounds, A., Jackson, N., Hanley, R., Bridge, E., Huillery, P., & Jones, M. (2019). Coulomb anti-blockade in a Rydberg gas. New Journal of Physics, 21(5), Article 053026. https://doi.org/10.1088/1367-2630/ab1c0e

We perform a comprehensive investigation of the coupling between a Rydberg-dressed atomic gas and an ultra-cold plasma. Using simultaneous time-resolved measurements of both neutral atoms and ions, we show that plasma formation occurs via a Coulomb a... Read More about Coulomb anti-blockade in a Rydberg gas.

Projected Pupil Plane Pattern (PPPP) with artificial Neural Networks (2019)
Journal Article
Yang, H., Gonzalez, C., Bharmal, N., & de Cos, F. (2019). Projected Pupil Plane Pattern (PPPP) with artificial Neural Networks. Monthly Notices of the Royal Astronomical Society, 487(1), 1480-1487. https://doi.org/10.1093/mnras/stz1362

Focus anisoplanatism is a significant measurement error when using one single laser guide star (LGS) in an Adaptive Optics (AO) system, especially for the next generation of extremely large telescopes. An alternative LGS configuration, called Project... Read More about Projected Pupil Plane Pattern (PPPP) with artificial Neural Networks.

Progress toward divertor detachment on TCV within H-mode operating parameters (2019)
Journal Article
Harrison, J., Theiler, C., Février, O., Oliviera, H. D., Maurizio, R., Verhaegh, K., Perek, A., Karpushov, A., Lipschultz, B., Duval, B., Feng, X., Henderson, S., Labit, B., Linehan, B., Merle, A., Reimerdes, H., Sheikh, U., Tsui, C., Vijvers, W., & Wüthrich, C. (2019). Progress toward divertor detachment on TCV within H-mode operating parameters. Plasma Physics and Controlled Fusion, 61(6), Article 065024. https://doi.org/10.1088/1361-6587/ab140e

Recent experiments on Tokamak à Configuration Variable have made significant progress toward partial detachment of the outer divertor in neutral beam heated H-mode plasmas in conventional and alternative divertor configurations. The heating power req... Read More about Progress toward divertor detachment on TCV within H-mode operating parameters.

The energetics of starburst-driven outflows at z ∼ 1 from KMOS (2019)
Journal Article
Swinbank, A., Harrison, C., Tiley, A., Johnson, H., Smail, I., Stott, J., Best, P., Bower, R., Bureau, M., Bunker, A., Cirasuolo, M., Jarvis, M., Magdis, G., Sharples, R., & Sobral, D. (2019). The energetics of starburst-driven outflows at z ∼ 1 from KMOS. Monthly Notices of the Royal Astronomical Society, 487(1), 381-393. https://doi.org/10.1093/mnras/stz1275

We present an analysis of the gas outflow energetics from KMOS observations of 529 main-sequence star-forming galaxies at z 1 using broad, underlying Hα and forbid- den lines of [Nii] and [Sii]. Based on the stacked spectra for a sample with median s... Read More about The energetics of starburst-driven outflows at z ∼ 1 from KMOS.

Laboratory demonstration of an alternative laser guide stars wavefront sensing technique—projected pupil plane pattern (2019)
Journal Article
Yang, H., Bharmal, N., Myers, R., & Younger, E. (2019). Laboratory demonstration of an alternative laser guide stars wavefront sensing technique—projected pupil plane pattern. Journal of Astronomical Telescopes, Instruments, and Systems, 5(2), Article 029002. https://doi.org/10.1117/1.jatis.5.2.029002

Adaptive optics (AO) is widely used in optical/near-infrared telescopes to remove the effects of atmospheric distortion, and laser guide stars (LGSs) are commonly used to ease the requirement for a bright, natural reference source close to the scient... Read More about Laboratory demonstration of an alternative laser guide stars wavefront sensing technique—projected pupil plane pattern.

The Type II-plateau Supernova 2017eaw in NGC 6946 and Its Red Supergiant Progenitor (2019)
Journal Article
Van Dyk, S. D., Zheng, W., Maund, J. R., Brink, T. G., Srinivasan, S., Andrews, J. E., Smith, N., Leonard, D. C., Morozova, V., Filippenko, A. V., Conner, B., Milisavljevic, D., de Jaeger, T., Long, K. S., Isaacson, H., Crossfield, I. J., Kosiarek, M. R., Howard, A. W., Fox, O. D., Kelly, P. L., …Kumar, S. (2019). The Type II-plateau Supernova 2017eaw in NGC 6946 and Its Red Supergiant Progenitor. Astrophysical Journal, 875(2), Article 136. https://doi.org/10.3847/1538-4357/ab1136

We present extensive optical photometric and spectroscopic observations, from 4 to 482 days after explosion, of the Type II-plateau (II-P) supernova (SN) 2017eaw in NGC 6946. SN 2017eaw is a normal SN II-P intermediate in properties between, for exam... Read More about The Type II-plateau Supernova 2017eaw in NGC 6946 and Its Red Supergiant Progenitor.

Scattering of spoof surface plasmon polaritons in defect-rich THz waveguides (2019)
Journal Article
Klein, A. K., Basden, A., Hammler, J., Tyas, L., Cooke, M., Balocco, C., Zeze, D., Girkin, J. M., & Gallant, A. (2019). Scattering of spoof surface plasmon polaritons in defect-rich THz waveguides. Scientific Reports, 9(1), Article 6288. https://doi.org/10.1038/s41598-019-42412-6

We report on the first observation of ‘Spoof’ Surface Plasmon Polariton (SPP) scattering from surface defects on metal-coated 3D printed, corrugated THz waveguiding surfaces. Surface defects, a result of the printing process, are shown to assist the... Read More about Scattering of spoof surface plasmon polaritons in defect-rich THz waveguides.

Direct measurement of stellar angular diameters by the VERITAS Cherenkov telescopes (2019)
Journal Article
Benbow, W., Bird, R., Brill, A., Brose, R., Chromey, A., Daniel, M., Feng, Q., Finley, J., Fortson, L., Furniss, A., Gillanders, G., Giuri, C., Gueta, O., Hanna, D., Halpern, J., Hassan, T., Holder, J., Hughes, G., Humensky, T., Joyce, A., …Williamson, T. (2019). Direct measurement of stellar angular diameters by the VERITAS Cherenkov telescopes. Nature Astronomy, 3(6), https://doi.org/10.1038/s41550-019-0741-z

PEPITO: atmospheric Profiling from short-Exposure focal Plane Images in seeing-limiTed mOde (2019)
Journal Article
Beltramo-Martin, O., Bharmal, N. A., & Correia, C. (2019). PEPITO: atmospheric Profiling from short-Exposure focal Plane Images in seeing-limiTed mOde. Monthly Notices of the Royal Astronomical Society, 486(2), 2032-2041. https://doi.org/10.1093/mnras/stz979

Atmospheric profiling is a requirement for controlling wide-field Adaptive Optics (AO) instruments, analyzing the AO performance with respect to the observing conditions and predicting the Point Spread Function (PSF) spatial variations. We present PE... Read More about PEPITO: atmospheric Profiling from short-Exposure focal Plane Images in seeing-limiTed mOde.

Monte Carlo studies for the optimisation of the Cherenkov Telescope Array layout (2019)
Journal Article
Acharyya, A., Agudo, I., Angüner, E., Alfaro, R., Alfaro, J., Alispach, C., Aloisio, R., Alves Batista, R., Amans, J.-P., Amati, L., Amato, E., Ambrosi, G., Antonelli, L., Aramo, C., Armstrong, T., Arqueros, F., Arrabito, L., Asano, K., Ashkar, H., Balazs, C., …Zorn, J. (2019). Monte Carlo studies for the optimisation of the Cherenkov Telescope Array layout. Astroparticle Physics, 111, https://doi.org/10.1016/j.astropartphys.2019.04.001

An open source toolkit for the tracking, termination and recovery of high altitude balloon flights and payloads (2019)
Journal Article
Clark, P., Funk, M., Funk, B., Funk, T., Meadows, R., Brown, A., Li, L., Massey, R., & Netterfield, C. (2019). An open source toolkit for the tracking, termination and recovery of high altitude balloon flights and payloads. Journal of Instrumentation, 14(04), Article P04003. https://doi.org/10.1088/1748-0221/14/04/p04003

We present an open source toolkit of flight-proven electronic devices which can be used to track, terminate and recover high altitude balloon flights and payloads. Comprising a beacon, pyrotechnic and non-pyrotechnic cut-down devices plus associated... Read More about An open source toolkit for the tracking, termination and recovery of high altitude balloon flights and payloads.

Efficient implementation of pseudo open loop control for adaptive optics on Extremely Large Telescopes (2019)
Journal Article
Basden, A., Jenkins, D., Morris, T., Osborn, J., & Townson, M. (2019). Efficient implementation of pseudo open loop control for adaptive optics on Extremely Large Telescopes. Monthly Notices of the Royal Astronomical Society, 486(2), 1774-1780. https://doi.org/10.1093/mnras/stz918

Closed-loop adaptive optics systems which use minimum mean square error wavefront reconstruction require the computation of pseudo open loop wavefront slopes. These techniques incorporate a knowledge of atmospheric statistics which must therefore be... Read More about Efficient implementation of pseudo open loop control for adaptive optics on Extremely Large Telescopes.

Photoactivated cell-killing involving a low molecular weight, donor-acceptor diphenylacetylene (2019)
Journal Article
Chisholm, D., Lamb, R., Pallett, T., Affleck, V., Holden, C., Marrison, J., O'Toole, P., Ashton, P., Newling, K., Steffen, A., Nelson, A., Mahler, C., Valentine, R., Blacker, T., Bain, A. J., Girkin, J. M., Marder, T. B., Whiting, A., & Ambler, C. A. (2019). Photoactivated cell-killing involving a low molecular weight, donor-acceptor diphenylacetylene. Chemical Science, 10(17), 4673-4683. https://doi.org/10.1039/c9sc00199a

Photoactivation of photosensitisers can be utilised to elicit the production of ROS, for potential therapeutic applications, including the destruction of diseased tissues and tumours. A novel class of photosensitiser, exemplified by DC324, has been d... Read More about Photoactivated cell-killing involving a low molecular weight, donor-acceptor diphenylacetylene.

The Dynamics and Distribution of Angular Momentum in HiZELS Star – Forming Galaxies at z = 0.8 – 3.3 (2019)
Journal Article
Gillman, S., Swinbank, A., Tiley, A., Harrison, C., Smail, I., Dudzevičiūtė, U., Sharples, R., Best, P., Bower, R., Cochrane, R., Fisher, D., Geach, J., Glazebrook, K., Ibar, E., Molina, J., Obreschkow, D., Schaller, M., Sobral, D., Sweet, S., Trayford, J., & Theuns, T. (2019). The Dynamics and Distribution of Angular Momentum in HiZELS Star – Forming Galaxies at z = 0.8 – 3.3. Monthly Notices of the Royal Astronomical Society, 486(1), 175-194. https://doi.org/10.1093/mnras/stz765

We present adaptive optics assisted integral field spectroscopy of 34 star–forming galaxies at z = 0.8–3.3 selected from the HiZELS narrow-band survey. We measure the kinematics of the ionised interstellar medium on ∼1 kpc scales, and show that the g... Read More about The Dynamics and Distribution of Angular Momentum in HiZELS Star – Forming Galaxies at z = 0.8 – 3.3.

Angular momentum of z ∼ 1.5 galaxies and their local analogues with adaptive optics (2019)
Journal Article
Sweet, S. M., Fisher, D. B., Savorgnan, G., Glazebrook, K., Obreschkow, D., Gillman, S., …Sharples, R. M. (2019). Angular momentum of z ∼ 1.5 galaxies and their local analogues with adaptive optics. Monthly Notices of the Royal Astronomical Society, 485(4), 5700-5714. https://doi.org/10.1093/mnras/stz750

We present stellar specific angular momentum j* measurements of two z ∼ 1.5 galaxies in the KGES sample and 12 DYNAMO z ∼ 0.1 analogues of high-redshift galaxies. We combine natural seeing integral field spectroscopic data to trace line emission out... Read More about Angular momentum of z ∼ 1.5 galaxies and their local analogues with adaptive optics.

A many-core CPU prototype of an MCAO and LTAO RTC for ELT-scale instruments (2019)
Journal Article
Jenkins, D. R., Basden, A. G., & Myers, R. M. (2019). A many-core CPU prototype of an MCAO and LTAO RTC for ELT-scale instruments. Monthly Notices of the Royal Astronomical Society, 485(4), 5142-5152. https://doi.org/10.1093/mnras/stz638

We propose a many-core CPU architecture for Extremely Large Telescope (ELT) scale adaptive optics (AO) real-time control (RTC) for the multi-conjugate AO (MCAO) and laser-tomographic AO (LTAO) modes. MCAO and LTAO differ from the more conventional si... Read More about A many-core CPU prototype of an MCAO and LTAO RTC for ELT-scale instruments.

Science with the Cherenkov Telescope Array (2019)
Book
Rulten, C. (2019). Science with the Cherenkov Telescope Array. https://doi.org/10.1142/10986

VasoTracker, a Low-Cost and Open Source Pressure Myograph System for Vascular Physiology (2019)
Journal Article
Lawton, P. F., Lee, M. D., Saunter, C. D., Girkin, J. M., McCarron, J. G., & Wilson, C. (2019). VasoTracker, a Low-Cost and Open Source Pressure Myograph System for Vascular Physiology. Frontiers in Physiology, 10, Article 99. https://doi.org/10.3389/fphys.2019.00099

Pressure myography, one of the most commonly used techniques in vascular research, measures the diameter of isolated, pressurized arteries to assess the functional activity of smooth muscle and endothelial cells. Despite the widespread adoption of th... Read More about VasoTracker, a Low-Cost and Open Source Pressure Myograph System for Vascular Physiology.