843 citations · 3.1k across the 32 of their papers we have counts for
9 papers · 2 filters
A rapid and dramatic outburst in Blazar 3C 454.3 during May 2005 - Optical and infrared observations with REM and AIT
L. Fuhrmann, A. Cucchiara, N. Marchili +18
The flat-spectrum radio quasar 3C 454.3 is well known to be a highly active and variable source with outbursts occurring across the whole electromagnetic spectrum over the last dec…
The XMM-Newton view of gamma-ray loud active nuclei
L. Foschini, G. Ghisellini, C. M. Raiteri +8
Notwithstanding the big efforts devoted to the investigation of the mechanisms responsible for the high-energy (E>100 MeV) gamma-ray emission in active galactic nuclei (AGN), the d…
Low-resolution VLT spectroscopy of GRBs 991216, 011211 and 021211
P. M. Vreeswijk, A. Smette, A. S. Fruchter +16
We present low-resolution VLT spectroscopy of the afterglow of the gamma-ray bursts (GRBs) 991216, 011211 and 021211. Our spectrum of GRB991216 is the only optical spectrum for thi…
Multiband Photometry of the Blazar PKS 0537-441: A Major Active State in December 2004 - March 2005
A. Dolcini, S. Covino, A. Treves +18
Multiband VRIJHK photometry of the Blazar PKS 0537-441 obtained with the REM telescope from December 2004 to March 2005 is presented. A major period of activity is found with more…
Off-Axis Properties of Short Gamma-Ray Bursts
H. -Th. Janka, M. -A. Aloy, P. A. Mazzali +1
Based on recent models of relativistic jet formation by thermal energy deposition around black hole-torus systems, the relation between the on- and off-axis appearance of short, ha…
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…