A-STAR: The All-Sky Transient Astrophysics Reporter
J. P. Osborne, P. O'Brien, P. Evans, G. W. Fraser, A. Martindale,, J.-L. Atteia, B. Cordier, S. Mereghetti
TL;DR
A-STAR is a space mission designed to survey the entire sky twice daily to detect and study transient high-energy astrophysical sources, including gravitational wave counterparts and gamma-ray bursts.
Contribution
It introduces a novel all-sky survey approach with two specialized X-ray instruments covering a broad energy range for transient detection.
Findings
Expected to trigger on ~100 GRBs per year
Will rapidly distribute locations of detected transients
Aims to locate X-ray counterparts to gravitational wave sources
Abstract
The small mission A-STAR (All-Sky Transient Astrophysics Reporter) aims to locate the X-ray counterparts to ALIGO and other gravitational wave detector sources, to study the poorly-understood low luminosity gamma-ray bursts, and to find a wide variety of transient high-energy source types, A-STAR will survey the entire available sky twice per 24 hours. The payload consists of a coded mask instrument, Owl, operating in the novel low energy band 4-150 keV, and a sensitive wide-field focussing soft X-ray instrument, Lobster, working over 0.15-5 keV. A-STAR will trigger on ~100 GRBs/yr, rapidly distributing their locations.
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