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Short-Bright GRBs: spectral properties
G. Ghirlanda, G. Ghisellini, A. Celotti
We study the spectra of short-bright GRBs detected by BATSE and compare them with the average and time resolved spectral properties of long-bright bursts. We confirm that short eve…
SN 2002lt and GRB 021211: a SN/GRB Connection at z = 1
M. Della Valle, D. Malesani, S. Benetti +14
We present spectroscopic and photometric observations of the afterglow of GRB 021211 and the discovery of its associated supernova, SN 2002lt. The spectrum shows a broad feature (F…
BeppoSAX Observations of 1-Jy BL Lacertae Objects - II
P. Padovani, L. Costamante, P. Giommi +3
We present new BeppoSAX LECS and MECS observations, covering the energy range 0.1 - 10 keV (observer's frame), of four BL Lacertae objects selected from the 1 Jy sample. All source…
Gamma Ray Bursts and Radio Loud Active Galactic Nuclei
G. Ghisellini
We believe that the radiation we receive from Gamma-Ray Bursts (GRBs) and radio loud Active Galacti Nuclei (AGNs) originates from the transformation of bulk relativistic motion int…
Aborted jets and the X-ray emission of radio-quiet AGNs
G. Ghisellini, F. Haardt, G. Matt
We propose that radio-quiet quasars and Seyfert galaxies have central black holes powering outflows and jets which propagate only for a short distance, because the velocity of the…
The spectra of short Gamma-Ray Bursts
G. Ghirlanda, G. Ghisellini, A. Celotti
We present the results of the spectral analysis of a sample of short bright --ray bursts (GRB) detected by BATSE and compare them with the average and time resolved spectral pro…