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Proceedings Paper

New astrophysics mission for a low-energy gamma-ray burst observatory (LEGO)
Author(s): Tumay O. Tumer; Kevin C. Hurley; Hakki Ogelman; Robert J. Paulos; Richard Charles Puetter; Eric J. Beuville; Dieter H. Hartmann; Bradley Schaefer; Jeff Preble; Richard E. Rothschild; Mark H. Finger; Lorenzo Fabris; Terrence J. O'Neill; Mark Jennings; Amos Yahil
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Paper Abstract

We propose a new astrophysics space mission for a low energy gamma-ray-burst observatory (LEGO) that will fit the envelope of a small-explorer (SMEX) type mission. The LEGO instrument combines silicon pixel detectors with ultra-high energy resolution and a novel cost effective fine-pitch coded mask, to image the sky with sub-arcminute accuracy in the 0.3 - 30 keV range with a wide field-of-view. LEGO is well adapted to study hundreds of short transients such as gamma-ray bursts and soft gamma repeaters in the unexplored energy range below 5 keV. LEGO takes one of the next logical steps in GRB studies in the post-BeppoSAX era by attacking the astrophysics questions raised by recent discoveries of variable radio, optical, and x-ray counterparts to burst sources. In addition to monitoring the sky for gamma-ray bursts, LEGO would provide a first all-sky monitor in the 0.3 - 30 keV range. LEGO will be sensitive to all mCrab sources in the sky in a day and to 0.1 mCrab sources in a year, and thus, may provide daily light curves and sensitive spectral measurements on about 103 objects and yearly data on an order of magnitude more sources.

Paper Details

Date Published: 15 October 1997
PDF: 9 pages
Proc. SPIE 3114, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VIII, (15 October 1997); doi: 10.1117/12.283801
Show Author Affiliations
Tumay O. Tumer, Univ. of California/Riverside (United States)
Kevin C. Hurley, Univ. of California/Berkeley (United States)
Hakki Ogelman, Univ. of Wisconsin/Madison (United States)
Robert J. Paulos, Univ. of Wisconsin/Madison (United States)
Richard Charles Puetter, Univ. of California/San Diego (United States)
Eric J. Beuville, Lawrence Berkeley National Lab. (United States)
Dieter H. Hartmann, Clemson Univ. (United States)
Bradley Schaefer, Yale Univ. (United States)
Jeff Preble, Spectrum Astro (United States)
Richard E. Rothschild, Univ. of California/San Diego (United States)
Mark H. Finger, Universities' Space Research Association (United States)
Lorenzo Fabris, Lawrence Berkeley National Lab. (United States)
Terrence J. O'Neill, Univ. of California/Riverside (United States)
Mark Jennings, Univ. of California/Riverside (United States)
Amos Yahil, SUNY/Stony Brook (United States)

Published in SPIE Proceedings Vol. 3114:
EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VIII
Oswald H. W. Siegmund; Mark A. Gummin, Editor(s)

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