HETEObservations of the Gamma‐Ray Burst GRB 030329: Evidence for an Underlying Soft X‐Ray Component | Zendy

R. Vanderspek | Zendy; T. Sakamoto | Zendy; C. Barraud | Zendy; Toru Tamagawa | Zendy; C. Graziani | Zendy; M. Suzuki | Zendy; Y. Shirasaki | Zendy; G. Prigozhin | Zendy; J. Villaseñor | Zendy; J. G. Jernigan | Zendy; G. Crew | Zendy; J. L. Atteia | Zendy; K. Hurley | Zendy; N. Kawai | Zendy; D. Q. Lamb | Zendy; G. Ricker | Zendy; S. E. Woosley | Zendy; N. Butler | Zendy; J. Doty | Zendy; A. Dullighan | Zendy; T. Donaghy | Zendy; E. E. Fenimore | Zendy; M. Galassi | Zendy; M. Matsuoka | Zendy; K. Takagishi | Zendy; K. Torii | Zendy; A. Yoshida | Zendy; M. Boër | Zendy; J. P. Dezalay | Zendy; J.F. Olive | Zendy; J. Braga | Zendy; R. Manchanda | Zendy; G. Pizzichini | Zendy

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HETEObservations of the Gamma‐Ray Burst GRB 030329: Evidence for an Underlying Soft X‐Ray Component

Author(s) -

R. Vanderspek,

T. Sakamoto,

C. Barraud,

Toru Tamagawa,

C. Graziani,

M. Suzuki,

Y. Shirasaki,

G. Prigozhin,

J. Villaseñor,

J. G. Jernigan,

G. Crew,

J. L. Atteia,

K. Hurley,

N. Kawai,

D. Q. Lamb,

G. Ricker,

S. E. Woosley,

N. Butler,

J. Doty,

A. Dullighan,

T. Donaghy,

E. E. Fenimore,

M. Galassi,

M. Matsuoka,

K. Takagishi,

K. Torii,

A. Yoshida,

M. Boër,

J. P. Dezalay,

J.F. Olive,

J. Braga,

R. Manchanda,

G. Pizzichini

Publication year - 2004

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/423923

Subject(s) - component (thermodynamics) , gamma ray burst , astrophysics , x ray , physics , optics , thermodynamics

An exceptionally intense gamma-ray burst, GRB030329, was detected andlocalized by the instruments on board the High Energy Transient Explorersatellite (HETE) at 11:37:14 UT on 29 March 2003. The burst consisted of two\~10s pulses of roughly equal brightness and an X-ray tail lasting >100s. Theenergy fluence in the 30-400 keV energy band was 1.08e-4 erg/cm2, makingGRB030329 one of the brightest GRBs ever detected. Communication of a 2 arcminerror box 73 minutes after the burst allowed the rapid detection of acounterpart in the optical, X-ray, radio and the ensuing discovery of asupernova with most unusual characteristics. Analyses of the burst lightcurvesreveal the presence of a distinct, bright, soft X-ray component underlying themain GRB: the 2-10 keV fluence of this component is ~7e-6 erg/cm2. The mainpulses of GRB030329 were preceded by two soft, faint, non-thermal bumps. Wepresent details of the HETE observations of GRB030329.Comment: 22 pages, 5 figures, to be published in ApJ 617, no. 2 (10 December 2004). Referee comments have been incorporated; results of improved spectral analysis are include

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