Effects of Cosmic Infrared Background on High Energy Delayed Gamma-Rays From Gamma-Ray Bursts

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Regenerated high energy emissions from gamma-ray bursts (GRBs) are studied in detail. If the primary emission spectrum extends to TeV range, these very high energy photons will be absorbed by the cosmic infrared background (CIB). The created high energy electron-positron pairs up-scatter not only cosmic microwave background (CMB) photons but also CIB photons, and secondary photons are generated in the GeV-TeV range. These secondary delayed photons may be observed in the near future, and useful for a consistency check for the primary spectra and GRB physical parameters. The up-scattered CIB photons cannot be neglected for low redshift bursts and/or GRBs ... continued below

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10 pages

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Murase, Kohta; /Kyoto U., Yukawa Inst., Kyoto; Asano, Katsuaki; Japan, /Natl. Astron. Observ. of; Nagataki, Shigehiro & /Kyoto U., Yukawa Inst., Kyoto /KIPAC, Menlo Park April 6, 2007.

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Regenerated high energy emissions from gamma-ray bursts (GRBs) are studied in detail. If the primary emission spectrum extends to TeV range, these very high energy photons will be absorbed by the cosmic infrared background (CIB). The created high energy electron-positron pairs up-scatter not only cosmic microwave background (CMB) photons but also CIB photons, and secondary photons are generated in the GeV-TeV range. These secondary delayed photons may be observed in the near future, and useful for a consistency check for the primary spectra and GRB physical parameters. The up-scattered CIB photons cannot be neglected for low redshift bursts and/or GRBs with a relatively low maximum photon energy. The secondary gamma-rays also give us additional information on the CIB, which is uncertain in observations so far.

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10 pages

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  • Journal Name: Submitted to Astrophys.J.

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  • Report No.: SLAC-PUB-12446
  • Grant Number: AC02-76SF00515
  • DOI: 10.1086/523031 | External Link
  • Office of Scientific & Technical Information Report Number: 901846
  • Archival Resource Key: ark:/67531/metadc888538

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  • April 6, 2007

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  • Sept. 22, 2016, 2:13 a.m.

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  • Nov. 23, 2016, 5:28 p.m.

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Murase, Kohta; /Kyoto U., Yukawa Inst., Kyoto; Asano, Katsuaki; Japan, /Natl. Astron. Observ. of; Nagataki, Shigehiro & /Kyoto U., Yukawa Inst., Kyoto /KIPAC, Menlo Park. Effects of Cosmic Infrared Background on High Energy Delayed Gamma-Rays From Gamma-Ray Bursts, article, April 6, 2007; [Menlo Park, California]. (digital.library.unt.edu/ark:/67531/metadc888538/: accessed October 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.