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"X-Ray Transients in Star-Forming Regions" and "Hard X-Ray Emission from X-Ray Bursters"This grant funded work on the analysis of data obtained with the Burst and Transient Experiment (BATSE) on the Compton Gamma-Ray Observatory. The goal of the work was to search for hard x-ray transients in star forming regions using the all-sky hard x-ray monitoring capability of BATSE. Our initial work lead to the discovery of a hard x-ray transient, GRO J1849-03. Follow-up observations of this source made with the Wide Field Camera on BeppoSAX showed that the source should be identified with the previously known x-ray pulsar GS 1843-02 which itself is identified with the x-ray source X1845-024 originally discovered with the SAS-3 satellite. Our identification of the source and measurement of the outburst recurrence time, lead to the identification of the source as a Be/X-ray binary with a spin period of 94.8 s and an orbital period of 241 days. The funding was used primarily for partial salary and travel support for John Tomsick, then a graduate student at Columbia University. John Tomsick, now Dr. Tomsick, received his Ph.D. from Columbia University in July 1999, based partially on results obtained under this investigation. He is now a postdoctoral research scientist at the University of California, San Diego.
Document ID
19990116845
Acquisition Source
Goddard Space Flight Center
Document Type
Contractor or Grantee Report
Authors
Halpern, Jules P.
(Columbia Univ. New York, NY United States)
Kaaret, Philip
(Columbia Univ. New York, NY United States)
Date Acquired
September 6, 2013
Publication Date
September 1, 1999
Subject Category
Space Radiation
Report/Patent Number
CAL-3158
Funding Number(s)
CONTRACT_GRANT: NAG5-3799
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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