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Title:
First Results from the All-Sky Monitor on the Rossi X-Ray Timing Explorer
Authors:
Levine, Alan M.; Bradt, Hale; Cui, Wei; Jernigan, J. G.; Morgan, Edward H.; Remillard, Ronald; Shirey, Robert E.; Smith, Donald A.
Publication:
Astrophysical Journal Letters v.469, p.L33 (ApJ Homepage)
Publication Date:
09/1996
Origin:
APJ
ApJ Keywords:
INSTRUMENTATION: DETECTORS, X-RAYS: GENERAL, X-RAYS: STARS
DOI:
10.1086/310260
Bibliographic Code:
1996ApJ...469L..33L

Abstract

The all-sky monitor on the Rossi X-Ray Timing Explorer has been monitoring the sky in the 1.5--12 keV band since late February. The instrument consists of three coded-aperture cameras that can be rotated to view different regions by a motorized drive assembly. Intensities of ~100 known sources are obtained via least-squares fits of shadow patterns to the data and compiled to form X-ray light curves. Six orbital periodicities and four long-term periodicities, all previously known, have been detected in these light curves. Searches for additional sources have also been conducted. X-ray light curves for the Crab Nebula, Cyg X-1, 4U 1705-44, GRO J1655-40, and SMC X-1 are reported. They illustrate the quality of the results and the range of observed phenomena.

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