B. Grossan, G. F. Smoot, V. V. Bogomolov, S. I. Svertilov, N. N. Vedenkin, M. Panasyuk, B. Goncharov, G. Rozhkov, K. Saleev, E. Grobovskoj, A. S. Krasnov, V. S. Morozenko, V. I. Osedlo, E. Rogkov, T. V. Vachenko, E. V. Linder
We present motivations for and study feasibility of a small, rapid optical to IR response gamma ray burst (GRB) space observatory. By analyzing existing GRB data, we give realistic detection rates for X-ray and optical/IR instruments of modest size under actual flight conditions. Given new capabilities of fast optical/IR response (about 1 s to target) and simultaneous multi-band imaging, such an observatory can have a reasonable event rate, likely leading to new science. Requiring a Swift-like orbit, duty cycle, and observing constraints, a Swift-BAT scaled down to 190 square cm of detector area would still detect and locate about 27 GRB per yr. for a trigger threshold of 6.5 sigma. About 23 percent of X-ray located GRB would be detected optically for a 10 cm diameter instrument (about 6 per yr. for the 6.5 sigma X-ray trigger).
View original:
http://arxiv.org/abs/1212.6570
No comments:
Post a Comment