منابع مشابه
Sky Coverage and Burst Repetition
To investigate the repeater content of gamma ray burst samples I develop two models where sources burst at a constant average rate. I find that the sky coverage affects the number of repeaters in a sample predominantly through the detector livetime, and that the number of bursts in the sample is the primary parameter. Thus the repeater content of burst samples should be compared within the cont...
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To investigate the repeater content of gamma ray burst samples I develop two models where sources burst at a constant average rate. I find that the sky coverage affects the number of repeaters in a sample predominantly through the detector livetime, and that the number of bursts in the sample is the primary parameter. Thus the repeater content of burst samples should be compared within the cont...
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This report details the sky coverage simulations carried out for the Keck Next Generation Adaptive Optics (NGAO) system. This work was carried out to meet the objectives stated in WBS Element Number: 3.1.2.2.10 Number and Type of Low Order WFS TS. As well as investigating the number of Natural Guide Star (NGS) Shack-Hartmann wavefront sensors (WFS), this report considers the number of modes to ...
متن کاملSky coverage of orbital detectors . Analytical approach
Context. Orbital detectors without pointing capability have to keep their field of view axis laying on their orbital plane, to observe the largest sky fraction. Aims. A general approach to estimate the exposure of each sky element for such detectors is a valuable tool in the R&D phase of a project, when the detector characteristics are still to be fixed. Methods. An analytical method to estimat...
متن کاملSky coverage and tip/tilt error analysis for TMT
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 1996
ISSN: 0004-637X,1538-4357
DOI: 10.1086/177350