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Feasibility of a Small, Rapid Optical/IR Response, Next Generation Gamma-Ray Burst Mission

  • B. Grossan (a1) (a2), G.F. Smoot (a1) (a3), V.V. Bogomolov (a1), S.I. Svertilov (a1), N.N. Vedenkin (a1), M. Panasyuk (a1), B. Goncharov (a4), G. Rozhkov (a4), K. Saleev (a4), E. Grobovskoj (a1), A.S. Krasnov (a1), V.S. Morozenko (a1), V.I. Osedlo (a1), E. Rogkov (a1), T.V. Vachenko (a1) and E.V. Linder (a1) (a2)...

Abstract

We present motivations for and study feasibility of a small, rapid-optical/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 (~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 cm2 of detector area would still detect and locate about 25 GRB yr-1 for a trigger threshold of 6.5σ. About 23% of X–ray located GRB would be detected optically for a 10 cm diameter instrument (~6 yr-1 for the 6.5σ X-ray trigger).

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[3] Connell, P., 2012, presentation, this conf., and priv. comm.
[4]Grossan, B., Park, I.H., Ahmad, S., et al., 2012, SPIE Astronomical Telescopes + Instrumentation (Amsterdam RAI, The Netherlands, July 1-6), 8443, 84432R
[5] Jeong, S., Ahmad, S., Barrillon, , et al., 2012, SPIE Astronomical Telescopes + Instrumentation (Amsterdam RAI, The Netherlands, July 1-6), 8443, 84432S
[6]Kim, J.E., Ahmad, S., Barrillon, P., et al., 2012, SPIE Astronomical Telescopes + Instrumentation (Amsterdam RAI, The Netherlands, July 1-6), 8443, 84432V
[7]Molinari, E., Vergani, S.D., Malesani, D., et al., 2007, A&A, 469, 13
[8]Perley, D.A., Cenko, S.B., Bloom, J.S., et al., 2009, AJ, 138, 1690

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