The UFFO (Ultra Fast Flash Observatory) pathfinder: Science and mission

P. Chen, S. Ahmad, K. Ahn, P. Barrillon, S. Blin-Bondil, S. Brandt, C. Budtz-Jorgensen, A. J. Castrotirado, H. S. Choi, Y. J. Choi, P. Connell, S. Dagoret-Campagne, C. De La Taille, C. Eyles, B. Grossan, I. Hermann, M. H.A. Huang, S. Jeong, A. Jung, J. E. KimS. H. Kim, Y. W. Kim, J. Lee, H. Lim, E. V. Linder, T. C. Liu, Niels Lund, K. W. Min, G. W. Na, J. W. Nam, K. Nam, M. I. Panayuk, I. H. Park, V. Reglero, J. M. Rodrigo, G. F. Smoot, Y. D. Suh, S. Svelitov, N. Vedenken, M. Z. Wang, I. Yashin, M. H. Zhao

研究成果: Paper同行評審

2 引文 斯高帕斯(Scopus)

摘要

Hundreds of gamma-ray burst (GRB) optical light curves have been measured since the discovery of optical afterglows. However, even after nearly 7 years of operation of the Swift Observatory, only a handful of measurements have been made soon (within a minute) after the gamma ray signal. This lack of early observations fails to address burst physics at short time scales associated with prompt emissions and progenitors. Because of this lack of subminute data, the characteristics of the rise phase of optical light curve of short-hard type GRB and rapid-rising GRB, which may account for ∼30% of all GRB, remain practically unknown. We have developed methods for reaching subminute and sub-second timescales in a small spacecraft observatory. Rather than slewing the entire spacecraft to aim the optical instrument at the GRB position, we use rapidly moving mirror to redirect our optical beam. As a first step, we employ motorized slewing mirror telescope (SMT), which can point to the event within 1s, in the UFFO Pathfinder GRB Telescope onboard the Lomonosov satellite to be launched in Nov. 2011. UFFO's sub-minute measurements of the optical emission of dozens of GRB each year will result in a more rigorous test of current internal shock models, probe the extremes of bulk Lorentz factors, provide the first early and detailed measurements of fast-rise GRB optical light curves, and help verify the prospect of GRB as a new standard candle. We will describe the science and the mission of the current UFFO Pathfinder project, and our plan of a full-scale UFFO-100 as the next step.

原文English
頁面243-246
頁數4
DOIs
出版狀態Published - 2011
事件32nd International Cosmic Ray Conference, ICRC 2011 - Beijing, China
持續時間: 11 8月 201118 8月 2011

Conference

Conference32nd International Cosmic Ray Conference, ICRC 2011
國家/地區China
城市Beijing
期間11/08/1118/08/11

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