The rapid decay of the optical emission from GRB 980326 and its possible implications

被引：69

作者：

Groot, PJ

Galama, TJ

Vreeswijk, PM

Wijers, RAMJ

Pian, E

Palazzi, E

van Paradijs, J

Kouveliotou, C

in't Zand, JJM

Heise, J

Robinson, C

Tanvir, N

Lidman, C

Tinney, C

Keane, M

Briggs, M

Hurley, K

Gonzalez, JF

Hall, P

Smith, MG

Covarrubias, R

Jonker, PG

Casares, J

Masetti, N

Frontera, F

Feroci, M

Piro, L

Costa, E

Smith, R

Jones, B

Windridge, D

Bland-Hawthorn, J

Veilleux, S

Garcia, M

Brown, WR

Stanek, KZ

Castro-Tirado, AJ

Gorosabel, J

Greiner, J

Jäger, K

Böhm, A

Fricke, KJ

机构：

[1] Univ Amsterdam, Astron Inst Anton Pannekoek, NL-1098 SJ Amsterdam, Netherlands

[2] Natl Inst Nucl & High Energy Phys, Ctr High Energy Astrophys, NL-1098 SJ Amsterdam, Netherlands

[3] Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England

[4] CNR, I-40129 Bologna, Italy

[5] Univ Alabama, Dept Phys, Huntsville, AL 35899 USA

[6] Univ Space Res Assoc, Washington, DC USA

[7] NASA, MSFC, Huntsville, AL 35812 USA

[8] SRON, Utrecht, Netherlands

[9] European So Observ, Santiago 19, Chile

[10] Anglo Australian Observ, Epping, NSW 2121, Australia

[11] Cerro Tololo Interamer Observ, La Serena, Chile

[12] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA

[13] Univ Toronto, Dept Astron, Toronto, ON M5S 3H8, Canada

[14] Inst Astrofis Canarias, Tenerife, Spain

[15] CNR, Ist Astrofis Spaziale, I-00133 Rome, Italy

[16] Univ Wales Coll Cardiff, Cardiff CF1 3NS, S Glam, Wales

[17] Univ Bristol, Bristol, Avon, England

[18] Univ Maryland, Dept Astron, College Pk, MD 20742 USA

[19] Ctr Astrophys, Cambridge, MA 02138 USA

[20] INTA, LAEFF, E-28080 Madrid, Spain

[21] CSIC, Inst Astrofis Andalucia, E-18080 Granada, Spain

[22] Astrophys Inst Potsdam, D-14482 Potsdam, Germany

[23] Univ Sternwarte Gottingen, D-37083 Gottingen, Germany

来源：

ASTROPHYSICAL JOURNAL | 1998年 / 502卷 / 02期

关键词：

gamma rays : bursts; gamma rays : observations; radiation mechanisms : nonthermal;

D O I：

10.1086/311509

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the discovery of the optical counterpart to GRB 980326. Its rapid optical decay can be characterized by a power law with exponent -2.10 +/- 0.13 and a constant underlying source at R-c = 25.5 +/- 0.5. Its optical colors 2.1 days after the burst imply a spectral slope of -0.66 +/- 0.70. The gamma-ray spectrum as observed with BATSE shows that it is among the 4% softest bursts ever recorded. We argue that the rapid optical decay may be a reason for the nondetection of some low-energy afterglows of GRBs.

引用

页码：L123 / L127

页数：5

共 45 条

[1] ACHTERBERG A, 1998, UNPUB MNRAS
[2] [Anonymous], 1997, NATURE
[3] ACCELERATION OF COSMIC-RAYS IN SHOCK FRONTS .1.
BELL, AR
[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1978, 182 (01) : 147 - 156
[4] PARTICLE ACCELERATION BY ASTROPHYSICAL SHOCKS
BLANDFORD, RD
OSTRIKER, JP
[J]. ASTROPHYSICAL JOURNAL, 1978, 221 (01) : L29 - L32
[5] BRIGGS M, 1998, 6856 IAU
[6] Photometry and spectroscopy of the GRB 970508 optical counterpart
Castro-Tirado, AJ
Gorosabel, J
Benítez, N
Wolf, C
Fockenbrock, R
Martínez-González, E
Kristen, H
Broeils, A
Pedersen, H
Greiner, J
Costa, E
Feroci, M
Piro, L
Frontera, F
Nicastro, L
Palazzi, E
Bartolini, C
Guarnieri, A
Masetti, N
Piccioni, A
Mignoli, M
Wold, M
Lacy, M
Birkle, K
Broadhurst, T
Brandt, S
Lund, N
[J]. SCIENCE, 1998, 279 (5353) : 1011 - 1014
[7] CASTROTIRADO AJ, 1998, 6848 IAU
[8] CASTROTIRADO AJ, 1997, 6598 IAU
[9] CELIDONIO G, 1998, 6851 IAU
[10] Discovery of an X-ray afterglow associated with the gamma-ray burst of 28 February 1997
Costa, E
Frontera, F
Heise, J
Feroci, M
Zand, JI
Fiore, F
Cinti, MN
DalFiume, D
Nicastro, L
Orlandini, M
Palazzi, E
Rapisarda, M
Zavattini, G
Jager, R
Parmar, A
Owens, A
Molendi, S
Cusumano, G
Maccarone, MC
Giarrusso, S
Coletta, A
Antonelli, LA
Giommi, P
Muller, JM
Piro, L
Butler, RC
[J]. NATURE, 1997, 387 (6635) : 783 - 785

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