Spectral evolution of gamma-ray bursts with BeppoSAX and correlation with X-ray afterglow properties
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.
Accepted: 21 April 1999
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
© European Southern Observatory (ESO), 1999