Spectral evolution of gamma-ray bursts with BeppoSAX and correlation with X-ray afterglow properties

F. Frontera; L. Amati; A. Castro-Tirado; E. Costa; D. Dal Fiume; M. Feroci; J. Heise; N. Masetti; J. M. Muller; L. Nicastro; M. Orlandini; E. Palazzi; E. Pian; L. Piro; M. Tavani; J. in't Zand

doi:10.1051/aas:1999284

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Volume 138 / No 3 (September 1999)

Astron. Astrophys. Suppl. Ser., 138 3 (1999) 399-400

Abstract

Free Access

Issue		Astron. Astrophys. Suppl. Ser. Volume 138, Number 3, September 1999 Gamma-Ray Bursts in the Afterglow Era Contents Rome, November 3-6, 1998


Page(s)		399 - 400
DOI		https://doi.org/10.1051/aas:1999284
Published online		15 September 1999

Astron. Astrophys. Suppl. Ser. 138, 399-400 (1999)

Spectral evolution of gamma-ray bursts with BeppoSAX and correlation with X-ray afterglow properties

F. Frontera¹^,2, L. Amati¹, A. Castro-Tirado³, E. Costa⁴, D. Dal Fiume¹, M. Feroci⁴, J. Heise⁵, N. Masetti¹, J. M. Muller⁵^,6, L. Nicastro⁷, M. Orlandini¹, E. Palazzi¹, E. Pian¹, L. Piro⁴, M. Tavani⁸^,9 and J. in't Zand¹

¹ Istituto Tecnologie e Studio Radiazioni Extraterrestri, CNR, Via Gobetti 101, 40129 Bologna, Italy
² Dipartimento di Fisica, Università di Ferrara, Via Paradiso 11, 44100 Ferrara, Italy
³ LAEFF, Madrid, Spain
⁴ Istituto Astrofisica Spaziale, CNR, Via Fosso del Cavaliere, 00133 Roma, Italy
⁵ Space research Organization in the Netherlands, Utrecht, NL, The Netherlands
⁶ BeppoSAX Scientific Data Center, Via Corcolle, 00100 Roma, Italy
⁷ Istituto Fisica Cosmica e Informatica, CNR, Palermo, Italy
⁸ Istituto di Fisica Cosmica e Teconologie Relative, CNR, Via Bassini 15/A, 20133 Milano, Italy
⁹ Columbia Astrophysics Laboratory, New York, U.S.A.

Received: 21 January 1999
Accepted: 21 April 1999

Abstract

We report some comparative results of an investigation devoted to study the spectral evolution of a sample of Gamma-Ray Bursts. They were simultaneously detected with both the Gamma-Ray Burst Monitor and the Wide Field Cameras aboard the BeppoSAX satellite and were reobserved with the Narrow Field Instruments aboard the same satellite.

Key words: gamma-rays: bursts / X-rays: general