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Title: Broadband Study of GRB 091127: A Sub-Energetic Burst at Higher Redshift?

Abstract

GRB 091127 is a bright gamma-ray burst (GRB) detected by Swift at a redshift z = 0.49 and associated with SN 2009nz. In this paper, 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 γ < 3 x 10 49 erg), soft spectrum, and unusual spectral lag connect this GRB to the class of sub-energetic bursts. Finally, 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.

Authors:
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Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE; National Aeronautic and Space Administration (NASA)
Contributing Org.:
Fermi LAT Collaboration
OSTI Identifier:
1356608
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
Astrophysical Journal
Additional Journal Information:
Journal Volume: 761; Journal Issue: 1; Journal ID: ISSN 0004-637X
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; gamma-ray burst

Citation Formats

Troja, E., Sakamoto, T., Guidorzi, C., Norris, J. P., Panaitescu, A., Kobayashi, S., Omodei, N., Brown, J. C., Burrows, D. N., Evans, P. A., Gehrels, N., Marshall, F. E., Mawson, N., Melandri, A., Mundell, C. G., Oates, S. R., Pal'shin, V., Preece, R. D., Racusin, J. L., Steele, I. A., Tanvir, N. R., Vasileiou, V., Wilson-Hodge, C., and Yamaoka, K. Broadband Study of GRB 091127: A Sub-Energetic Burst at Higher Redshift?. United States: N. p., 2012. Web. doi:10.1088/0004-637X/761/1/50.
Troja, E., Sakamoto, T., Guidorzi, C., Norris, J. P., Panaitescu, A., Kobayashi, S., Omodei, N., Brown, J. C., Burrows, D. N., Evans, P. A., Gehrels, N., Marshall, F. E., Mawson, N., Melandri, A., Mundell, C. G., Oates, S. R., Pal'shin, V., Preece, R. D., Racusin, J. L., Steele, I. A., Tanvir, N. R., Vasileiou, V., Wilson-Hodge, C., & Yamaoka, K. Broadband Study of GRB 091127: A Sub-Energetic Burst at Higher Redshift?. United States. doi:10.1088/0004-637X/761/1/50.
Troja, E., Sakamoto, T., Guidorzi, C., Norris, J. P., Panaitescu, A., Kobayashi, S., Omodei, N., Brown, J. C., Burrows, D. N., Evans, P. A., Gehrels, N., Marshall, F. E., Mawson, N., Melandri, A., Mundell, C. G., Oates, S. R., Pal'shin, V., Preece, R. D., Racusin, J. L., Steele, I. A., Tanvir, N. R., Vasileiou, V., Wilson-Hodge, C., and Yamaoka, K. Wed . "Broadband Study of GRB 091127: A Sub-Energetic Burst at Higher Redshift?". United States. doi:10.1088/0004-637X/761/1/50. https://www.osti.gov/servlets/purl/1356608.
@article{osti_1356608,
title = {Broadband Study of GRB 091127: A Sub-Energetic Burst at Higher Redshift?},
author = {Troja, E. and Sakamoto, T. and Guidorzi, C. and Norris, J. P. and Panaitescu, A. and Kobayashi, S. and Omodei, N. and Brown, J. C. and Burrows, D. N. and Evans, P. A. and Gehrels, N. and Marshall, F. E. and Mawson, N. and Melandri, A. and Mundell, C. G. and Oates, S. R. and Pal'shin, V. and Preece, R. D. and Racusin, J. L. and Steele, I. A. and Tanvir, N. R. and Vasileiou, V. and Wilson-Hodge, C. and Yamaoka, K.},
abstractNote = {GRB 091127 is a bright gamma-ray burst (GRB) detected by Swift at a redshift z = 0.49 and associated with SN 2009nz. In this paper, 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 γ < 3 x 1049 erg), soft spectrum, and unusual spectral lag connect this GRB to the class of sub-energetic bursts. Finally, 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.},
doi = {10.1088/0004-637X/761/1/50},
journal = {Astrophysical Journal},
number = 1,
volume = 761,
place = {United States},
year = {2012},
month = {11}
}

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Cited by: 19 works
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