The expected rates of X-ray flashes from GRBs in ROSAT and preliminary search results

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The recent long (up to days) and relatively bright soft X-ray afterglows from GRBs detected by BeppoSAX raise the possibility of detecting similar events in the ROSAT database. The authors perform detailed calculations on the expected number of ROSAT events based on the extended halo scenario. They use the realistic ROSAT capabilities and the actual exposure time on bright nearby galaxies. They find that the expected number of x-ray events is quite low, {approximately} 1, and depends on the peak x-ray luminosity. Thus a nondetection of such events from nearby galaxies (within 12 Mpc) can not rule out most of ... continued below

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6 p.

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Li, H.; Sun, X. & Fenimore, E.E. December 1, 1998.

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The recent long (up to days) and relatively bright soft X-ray afterglows from GRBs detected by BeppoSAX raise the possibility of detecting similar events in the ROSAT database. The authors perform detailed calculations on the expected number of ROSAT events based on the extended halo scenario. They use the realistic ROSAT capabilities and the actual exposure time on bright nearby galaxies. They find that the expected number of x-ray events is quite low, {approximately} 1, and depends on the peak x-ray luminosity. Thus a nondetection of such events from nearby galaxies (within 12 Mpc) can not rule out most of the viable halo models. They also present the preliminary search results from the ROSAT PSPC database.

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6 p.

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OSTI as DE99000634

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  • 4. Huntsville gamma ray bursts symposium, Huntsville, AL (United States), 15-20 Sep 1997

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  • Other: DE99000634
  • Report No.: LA-UR--98-308
  • Report No.: CONF-9709153--
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 291111
  • Archival Resource Key: ark:/67531/metadc680136

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  • December 1, 1998

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  • July 25, 2015, 2:20 a.m.

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  • April 21, 2016, 10:19 p.m.

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Li, H.; Sun, X. & Fenimore, E.E. The expected rates of X-ray flashes from GRBs in ROSAT and preliminary search results, article, December 1, 1998; New Mexico. (digital.library.unt.edu/ark:/67531/metadc680136/: accessed November 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.