GRB 990510: On the possibility of a beamed X-ray afterglow

被引：32

作者：

Kuulkers, E

Antonelli, LA

Kuiper, L

Kaastra, JS

Amati, L

Costa, E

Frontera, F

Heise, J

In't Zand, JJM

Masetti, N

Nicastro, L

Pian, E

Piro, L

Soffitta, P

机构：

[1] SRON, NL-3584 CA Utrecht, Netherlands

[2] Univ Utrecht, Inst Astron, NL-3508 TA Utrecht, Netherlands

[3] BeppoSAX Sci Data Ctr, I-00131 Rome, Italy

[4] Osserv Astron Roma, I-00044 Frascati, Italy

[5] CNR, Ist Tecnol & Studio Radiazioni Extraterrestri, I-40129 Bologna, Italy

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

[7] Univ Ferrara, Dipartmento Fis, I-44100 Ferrara, Italy

[8] CNR, Ist Fis Cosm & Applicazioni Informat, I-90146 Palermo, Italy

来源：

ASTROPHYSICAL JOURNAL | 2000年 / 538卷 / 02期

关键词：

gamma rays : bursts; X-rays : general;

D O I：

10.1086/309159

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We discuss the prompt emission of the gamma-ray burst GRB 990510 and its subsequent X-ray afterglow from 8.0 to 44.3 hr after the prompt emission, using observations with the Gamma-Ray Burst Monitor and Narrow Field Instruments on BeppoSAX. In the 40-700 keV band, GRB 990510 had a fluence of similar to 1.9 x 10(-5) ergs cm(-2), whereas it reached a peak flux of similar to 2.4 x 10(-6) ergs cm(-2) s(-1). The X-ray after-glow decay light curve can be satisfactorily described by a single power law with an index of -1.42 +/- 0.07. Both the X-ray and optical behavior of the afterglow can be explained by gamma-ray burst debris expanding as a jet; we find that the cooling frequency is (fixed) between the optical and X-ray wavelength bands.

引用

页码：638 / 644

页数：7

共 51 条

[11] H I IN THE GALAXY [J].

DICKEY, JM ;

LOCKMAN, FJ .

ANNUAL REVIEW OF ASTRONOMY AND ASTROPHYSICS, 1990, 28 :215-261

[12]

Favata F, 1997, ASTRON ASTROPHYS, V324, pL49

[13]

FIORE F, 2000, IN PRESS MNRAS

[14] The radio afterglow from the gamma-ray burst of 8 May 1997 [J].

Frail, DA ;

Kulkarni, SR ;

Nicastro, L ;

Feroci, M ;

Taylor, GB .

NATURE, 1997, 389 (6648) :261-263

[15] The high energy instrument PDS on-board the BeppoSAX X-ray astronomy satellite [J].

Frontera, F ;

Costa, E ;

DalFiume, D ;

Feroci, M ;

Nicastro, L ;

Orlandini, M ;

Palazzi, E ;

Zavattini, G .

ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES, 1997, 122 (02) :357-369

[16] Spectral properties of the prompt X-ray emission and afterglow from the gamma-ray burst of 1997 February 28 [J].

Frontera, F ;

Costa, E ;

Piro, L ;

Muller, JM ;

Amati, L ;

Feroci, M ;

Fiore, F ;

Pizzichini, G ;

Tavani, M ;

Castro-Tirado, A ;

Cusumano, G ;

Dal Fiume, D ;

Heise, J ;

Hurley, K ;

Nicastro, L ;

Orlandini, M ;

Owens, A ;

Palazzi, E ;

Parmar, AN ;

Zand, JI ;

Zavattini, G .

ASTROPHYSICAL JOURNAL, 1998, 493 (02) :L67-L70

[17]

FRUCHTER A, 1999, 386 GCN

[18] Hubble Space Telescope and Palomar imaging of GRB 990123:: Implications for the nature of gamma-ray bursts and their hosts [J].

Fruchter, AS ;

Thorsett, SE ;

Metzger, MR ;

Sahu, KC ;

Petro, L ;

Livio, M ;

Ferguson, H ;

Pian, E ;

Hogg, DW ;

Galama, T ;

Gull, TR ;

Kouveliotou, C ;

Macchetto, D ;

van Paradijs, J ;

Pedersen, H ;

Smette, A .

ASTROPHYSICAL JOURNAL, 1999, 519 (01) :L13-L16

[19]

GALAMA TJ, 1999, 313 GCN

[20] Optical and radio observations of the afterglow from GRB 990510: Evidence for a jet [J].

Harrison, FA ;

Bloom, JS ;

Frail, DA ;

Sari, R ;

Kulkarni, SR ;

Djorgovski, SG ;

Axelrod, T ;

Mould, J ;

Schmidt, BP ;

Wieringa, MH ;

Wark, RM ;

Subrahmanyan, R ;

McConnell, D ;

McCarthy, PJ ;

Schaefer, BE ;

McMahon, RG ;

Markze, RO ;

Firth, E ;

Soffitta, P ;

Amati, L .

ASTROPHYSICAL JOURNAL, 1999, 523 (02) :L121-L124

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