CONSTRAINTS ON THE EMISSION MODEL OF THE "NAKED-EYE BURST" GRB 080319B

被引：3

作者：

Abdo, A. A. ^{[2
,3
]}

Abeysekara, A. U. ^{[2
]}

Allen, B. T. ^{[4
]}

Aune, T. ^{[1
]}

Berley, D. ^{[5
]}

Chen, C. ^{[4
]}

Christopher, G. E. ^{[6
]}

DeYoung, T. ^{[7
]}

Dingus, B. L. ^{[8
]}

Ellsworth, R. W. ^{[3
]}

Gonzalez, M. M. ^{[9
]}

Goodman, J. A. ^{[5
]}

Granot, J. ^{[10
]}

Hays, E. ^{[11
]}

Hoffman, C. M. ^{[8
]}

Huentemeyer, P. H. ^{[12
]}

Kolterman, B. E. ^{[6
]}

Linnemann, J. T. ^{[2
]}

McEnery, J. E. ^{[11
]}

Mincer, A. I. ^{[6
]}

Morgan, T. ^{[13
]}

Nemethy, P.

Pretz, J. ^{[6
,8
]}

Ramirez-Ruiz, E. ^{[14
]}

Ryan, J. M. ^{[13
]}

Parkinson, P. M. Saz ^{[1
]}

Shoup, A. ^{[15
]}

Sinnis, G. ^{[8
]}

Smith, A. J. ^{[5
]}

Vasileiou, V. ^{[5
]}

Walker, G. P. ^{[8
]}

Williams, D. A. ^{[1
]}

Yodh, G. B. ^{[4
]}

机构：

[1] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA

[2] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA

[3] George Mason Univ, Sch Phys Astron & Computat Sci, Fairfax, VA 22030 USA

[4] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA

[5] Univ Maryland, Dept Phys, College Pk, MD 20742 USA

[6] NYU, Dept Phys, New York, NY 10003 USA

[7] Penn State Univ, Dept Phys, University Pk, PA 16802 USA

[8] Los Alamos Natl Lab, Grp P 23, Los Alamos, NM 87545 USA

[9] Univ Nacl Autonoma Mexico, Inst Astron, Mexico City 04510, DF, Mexico

[10] Open Univ Israel, IL-43537 Raanana, Israel

[11] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[12] Michigan Technol Univ, Dept Phys, Houghton, MI 49931 USA

[13] Univ New Hampshire, Dept Phys, Durham, NH 03824 USA

[14] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA

[15] Ohio State Univ, Dept Phys, Lima, OH 45804 USA

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2012年 / 753卷 / 02期

基金：

美国国家科学基金会;

关键词：

astroparticle physics; gamma-ray burst: individual (GRB 080319B); HIGH-ENERGY EMISSION; FERMI OBSERVATIONS; PROMPT;

D O I：

10.1088/2041-8205/753/2/L31

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

On 2008 March 19, one of the brightest gamma-ray bursts (GRBs) ever recorded was detected by several ground- and space-based instruments spanning the electromagnetic spectrum from radio to gamma rays. With a peak visual magnitude of 5.3, GRB 080319B was dubbed the "naked-eye" GRB, as an observer under dark skies could have seen the burst without the aid of an instrument. Presented here are results from observations of the prompt phase of GRB 080319B taken with the Milagro TeV observatory. The burst was observed at an elevation angle of 47 degrees. Analysis of the data is performed using both the standard air shower method and the scaler or single-particle technique, which results in a sensitive energy range that extends from similar to 5 GeV to >20 TeV. These observations provide the only direct constraints on the properties of the high-energy gamma-ray emission from GRB 080319B at these energies. No evidence for emission is found in the Milagro data, and upper limits on the gamma-ray flux above 10 GeV are derived. The limits on emission between similar to 25 and 200 GeV are incompatible with the synchrotron self-Compton model of gamma-ray production and disfavor a corresponding range (2 eV-16 eV) of assumed synchrotron peak energies. This indicates that the optical photons and soft (similar to 650 keV) gamma rays may not be produced by the same electron population.

引用

页数：5

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