The GCT camera for the Cherenkov Telescope Array
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 876 (2016) 1-4
Gamma-ray Novae: Rare or Nearby?
Monthly Notices of the Royal Astronomical Society Oxford University Press 465 (2016) 1218-1226
Abstract:
Classical Novae were revealed as a surprise source of γ-rays in Fermi LAT observations. During the first 8 years since the LAT was launched, 6 novae in total have been detected to >5σ in γ-rays, in contrast to the 69 discovered optically in the same period. We attempt to resolve this discrepancy by assuming all novae are γ-ray emitters, and assigning peak one-day fluxes based on a flat distribution of the known emitters to a simulated population. To determine optical parameters, the spatial distribution and magnitudes of bulge and disc novae in M31 are scaled to the Milky Way, which we approximate as a disc with a 20 kpc20 kpc radius and elliptical bulge with semi major axis 3 kpc3 kpc and axis ratios 2:1 in the xy plane. We approximate Galactic reddening using a double exponential disc with vertical and radial scale heights of rd=5 kpcrd=5 kpc and zd=0.2 kpczd=0.2 kpc, and demonstrate that even such a rudimentary model can easily reproduce the observed fraction of γ-ray novae, implying that these apparently rare sources are in fact nearby and not intrinsically rare. We conclude that classical novae with mR ≤ 12 and within ≈8 kpc≈8 kpc are likely to be discovered in γ-rays using the Fermi LAT.The Cherenkov Telescope Array Observatory: top level use cases
Proceedings of SPIE SPIE, the international society for optics and photonics 9913 (2016) 991331-991331-12
The Gamma-ray Cherenkov Telescope, an end-to end Schwarzschild-Couder telescope prototype proposed for the Cherenkov Telescope Array
Proceedings of SPIE SPIE, the international society for optics and photonics 9908 (2016) 990848-990848-9
The GCT camera for the Cherenkov Telescope Array
Proceedings of SPIE SPIE, the international society for optics and photonics 9906 (2016) 99065k-99065k-8