Prompt Emission Properties of Swift GRBs

Sakamoto, T.; Barthelmy, S.; Baumgartner, W.; Cummings, J.; Fenimore, E.; Gehrels, N.; Krimm, H.; Markwardt, C.; Palmer, D.; Parsons, A.; Sato, G.; Stamatikos, M.; Tueller, J.; Ukwatta, T.

doi:10.1063/1.3621736

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Research Article| August 19 2011

Prompt Emission Properties of Swift GRBs

T. Sakamoto;

T. Sakamoto

aCRESST and NASA Goddard Space Flight Center, Greenbelt, MD 20771

bCenter for Space Science and Technology, University of Maryand, Baltimore County, Baltimore, MD 21250

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S. Barthelmy;

S. Barthelmy

cNASA Goddard Space Flight Center, Greenbelt, MD 20771

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W. Baumgartner;

W. Baumgartner

aCRESST and NASA Goddard Space Flight Center, Greenbelt, MD 20771

bCenter for Space Science and Technology, University of Maryand, Baltimore County, Baltimore, MD 21250

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J. Cummings;

J. Cummings

aCRESST and NASA Goddard Space Flight Center, Greenbelt, MD 20771

bCenter for Space Science and Technology, University of Maryand, Baltimore County, Baltimore, MD 21250

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E. Fenimore;

E. Fenimore

dLos Alamos National Laboratory, P.O. Box 1663, Los Alamos, NM, 87545

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N. Gehrels;

N. Gehrels

cNASA Goddard Space Flight Center, Greenbelt, MD 20771

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H. Krimm;

H. Krimm

aCRESST and NASA Goddard Space Flight Center, Greenbelt, MD 20771

eUniversities Space Research Association, 10211 Wincopin Circle, Suite 500, Columbia, MD 21044‐3432

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C. Markwardt;

C. Markwardt

aCRESST and NASA Goddard Space Flight Center, Greenbelt, MD 20771

fDepartment of Astronomy, University of Maryland, College Park, MD 20742

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D. Palmer;

D. Palmer

dLos Alamos National Laboratory, P.O. Box 1663, Los Alamos, NM, 87545

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A. Parsons;

A. Parsons

cNASA Goddard Space Flight Center, Greenbelt, MD 20771

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G. Sato;

G. Sato

gInstitute of Space and Astronautical Science, JAXA, Kanagawa 229‐8510, Japan

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M. Stamatikos;

M. Stamatikos

hCenter for Cosmology and Astro‐Particle Physics, Department of Physics, The Ohio State University, 191 West Woodruff Avenue, Columbus, OH 43210

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J. Tueller;

J. Tueller

cNASA Goddard Space Flight Center, Greenbelt, MD 20771

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T. Ukwatta

iCenter for Nuclear Studies, Department of Physics, The George Washington University, Washington, D.C. 20052

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Author & Article Information

T. Sakamoto ^a,b

,

S. Barthelmy ^c

,

W. Baumgartner ^a,b

,

J. Cummings ^a,b

,

E. Fenimore ^d

,

N. Gehrels ^c

,

H. Krimm ^a,e

,

C. Markwardt ^a,f

,

D. Palmer ^d

,

A. Parsons ^c

,

G. Sato ^g

,

M. Stamatikos ^h

,

J. Tueller ^c

,

T. Ukwatta ⁱ

aCRESST and NASA Goddard Space Flight Center, Greenbelt, MD 20771

bCenter for Space Science and Technology, University of Maryand, Baltimore County, Baltimore, MD 21250

cNASA Goddard Space Flight Center, Greenbelt, MD 20771

dLos Alamos National Laboratory, P.O. Box 1663, Los Alamos, NM, 87545

eUniversities Space Research Association, 10211 Wincopin Circle, Suite 500, Columbia, MD 21044‐3432

fDepartment of Astronomy, University of Maryland, College Park, MD 20742

gInstitute of Space and Astronautical Science, JAXA, Kanagawa 229‐8510, Japan

hCenter for Cosmology and Astro‐Particle Physics, Department of Physics, The Ohio State University, 191 West Woodruff Avenue, Columbus, OH 43210

iCenter for Nuclear Studies, Department of Physics, The George Washington University, Washington, D.C. 20052

AIP Conf. Proc. 1358, 51–55 (2011)

https://doi.org/10.1063/1.3621736

We present the results from the second Swift BAT catalog of 476 gamma‐ray bursts, which contains bursts detected by the BAT between 2004 December 19 and 2009 December 21. In addition to the spectral and temporal parameters extracted from the first BAT GRB catalog, 3324 time‐resolved spectra have been extracted and analyzed. We show and discuss 1) the duration distribution, 2) the hardness of short GRBs, 3) Epeak distribution, 4) the line of death problem and 5) an additional power‐law component in the prompt emission spectrum.

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2011

American Institute of Physics

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