Decay of the GRB 990123 optical afterglow:: Implications for the fireball model

被引：120

作者：

Castro-Tirado, AJ ^{[1
]}

Zapatero-Osorio, MR

Caon, N

Cairós, LM

Hjorth, J

Pedersen, H

Andersen, MI

Gorosabel, J

Bartolini, C

Guarnieri, A

Piccioni, A

Frontera, F

Masetti, N

Palazzi, E

Pian, E

Greiner, J

Hudec, R

Sagar, R

Pandey, AK

Mohan, V

Yadav, RKS

Nilakshi

Björnsson, G

Jakobsson, P

Burud, I

Courbin, F

Valentini, G

Piersimoni, A

Aceituno, J

Montoya, LM

Pedraz, S

Gredel, R

Claver, CF

Rector, TA

Rhoads, JE

Walter, F

Ott, J

Hippelein, H

Sánchez-Béjar, V

Gutiérrez, C

Oscoz, A

Zhu, J

Chen, JS

Zhang, HT

Wei, JY

Zhou, AY

Guziy, S

Shlyapnikov, A

Heise, J

Costa, E

机构：

[1] CSIC, Inst Astrofis Andalucia, Granada, Spain

[2] Inst Astrofis Canarias, Tenerife, Spain

[3] Univ Copenhagen, Astron Observ, Copenhagen, Denmark

[4] Nord Opt Telescope, Tenerife, Spain

[5] INTA, Lab Astrofis Espacial & Fis Fundamental, Madrid, Spain

[6] Univ Bologna, Dipartimento Astron, Bologna, Italy

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

[8] CNR, Ist Tecnol & Studio Radiaz Extraterr, Bologna, Italy

[9] Inst Astrophys, Potsdam, Germany

[10] Astron Inst, CZ-25165 Ondrejov, Czech Republic

[11] Uttar Pradesh State Observ, Naini Tal 263129, India

[12] Univ Iceland, Inst Sci, IS-107 Reykjavik, Iceland

[13] Univ Liege, Inst Astrophys & Geophys, B-4000 Liege, Belgium

[14] Osserv Astron V Cerulli, Teramo, Italy

[15] Calar Alto Observ, Almeria, Spain

[16] Kitt Peak Natl Observ, Tucson, AZ 85726 USA

[17] Univ Bonn, Astron Observ, D-5300 Bonn, Germany

[18] Radio Astron Inst, D-53121 Bonn, Germany

[19] Max Planck Inst Astron, D-69117 Heidelberg, Germany

[20] Chinese Acad Sci, Beijing Astron Observ, Beijing 100080, Peoples R China

[21] Nikolaev Univ Observ, UA-327030 Nikolayev, Ukraine

[22] Nikolaev Astron Observ, Nikolaev Space Res Grp, UA-327030 Nikolayev, Ukraine

[23] Space Res Org Netherlands, Utrecht, Netherlands

[24] CNR, Ist Astrofis Spaziale, I-00044 Frascati, Italy

来源：

SCIENCE | 1999年 / 283卷 / 5410期

关键词：

D O I：

10.1126/science.283.5410.2069

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Broad-band (ultraviolet to near-infrared) observations of the intense gamma ray burst GRB 990123 started similar to 8.5 hours after the event and continued until 18 February 1999. When combined with other data, in particular from the Robotic Telescope and Transient Source Experiment (ROTSE) and the Hubble Space Telescope (HST), evidence emerges for a smoothly declining light curve, suggesting some color dependence that could be related to a cooling break passing the ultraviolet-optical band at about 1 day after the high-energy event. The steeper decline rate seen after 1.5 to 2 days may be evidence for a collimated jet pointing toward the observer.

引用

页码：2069 / 2073

页数：5

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