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Accession Number
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N20120010113
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Title
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Broadband Study of GRB 091127: A Sub-Energetic Burst at Higher Redshift.
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Publication Date
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2012
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Media Count
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12p
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Personal Author
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B. I. Cook B. J. McGill C. Parmesan E. E. Cleland E. M. Wolkovich G. J. McCabe J. Regetz J. L. Betancourt J. M. Allen K. Bolmgren L. T. Lancaster M. D. Schwartz N. Salamin N. J. B. Kraft S. Pau S. E. Travers S. J. Mazer T. J. Davies T. M. Crimmins T. R. Ault
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Abstract
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GRB 091127 is a bright gamma-ray burst (GRB) detected by Swift at a redshift z=0.49 and associated with SN 2009nz. We present the broadband analysis of the GRB prompt and afterglow emission and study its high-energy properties in the context of the GRB/SN association. While the high luminosity of the prompt emission and standard afterglow behavior are typical of cosmological long GRBs, its low energy release (E(sub gamma), 3x10(exp 49) erg), soft spectrum and unusual spectral lag connect this GRB to the class of sub-energetic bursts. We discuss the suppression of high-energy emission in this burst, and investigate whether this behavior could be connected with the sub-energetic nature of the explosion. Subject headings: gamma-ray bursts: individual (GRB 091127)
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Keywords
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Broadband
Cosmology
Explosions
Gamma ray bursts
Gamma rays
Luminosity
Red shift
Spectra
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Source Agency
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National Aeronautics and Space Administration
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NTIS Subject Category
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54C - Astrophysics
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Corporate Author
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Goddard Space Flight Center, Greenbelt, MD.
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Document Type
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Journal article
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Title Note
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N/A
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NTIS Issue Number
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1226
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Contract Number
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N/A
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