46 citations · 86 across the 3 of their papers we have counts for
6 papers
Re-born fireballs in Gamma-Ray Bursts
G. Ghisellini, A. Celotti, G. Ghirlanda +2
We consider the interaction between a relativistic fireball and material assumed to be still located just outside the progenitor star. Only a small fraction of the expected mass is…
Spectral analysis of Swift long GRBs with known redshift
J. I. Cabrera, C. Firmani, V. Avila-Reese +3
We study the spectral and energetics properties of 47 long-duration gamma-ray bursts (GRBs) with known redshift, all of them detected by the Swift satellite. Due to the narrow ener…
The role of afterglow break-times as GRB jet angle indicators
L. Nava, G. Ghisellini, G. Ghirlanda +3
The early X-ray light curve of Gamma Ray Bursts (GRBs) is complex, and shows a typical steep-flat-steep behaviour. The time T_a at which the flat (plateau) part ends may bear some…
Hubble Space Telescope ultraviolet spectroscopy of blazars: emission lines properties and black hole masses
Elena Pian, Renato Falomo, Aldo Treves
The ultraviolet (UV) spectra of 16 blazars (<z> ~1) from the archives of the Hubble Space Telescope Faint Object Spectrograph have been analyzed in order to study in a systematic w…
Detection of pulsations and a spectral feature in the X-ray emission of the isolated neutron star 1RXS J214303.7+065419/RBS 1774
S. Zane, M. Cropper, R. Turolla +4
We report on the results of a deep XMM-Newton observation of RBS 1774, the most recent dim isolated neutron star candidate found in the ROSAT archive data. Spectral and timing anal…
Host galaxies and black hole masses of low and high luminosity radio loud active nuclei
Renato Falomo, Nicoletta Carangelo, Aldo Treves
We investigate the host galaxy luminosities of BL Lac Objects (BLLs) and Radio Loud Quasars (RLQs) at z<0.5 imaged with the Hubble Space Telescope (HST). From a homogeneous treatme…