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7 papers · 1 filter
Spectroscopic evidence for SN 2010ma associated with GRB 101219B
M. Sparre, J. Sollerman, J. P. U. Fynbo +19
We report on the spectroscopic detection of supernova SN 2010ma associated with the long gamma-ray burst GRB 101219B. We observed the optical counterpart of the GRB on three nights…
POLARIX: a pathfinder mission of X-ray polarimetry
Enrico Costa, Ronaldo Bellazzini, Gianpiero Tagliaferri +30
Since the birth of X-ray astronomy, spectral, spatial and timing observation improved dramatically, procuring a wealth of information on the majority of the classes of the celestia…
AGILE detection of extreme gamma-ray activity from the blazar PKS 1510-089 during March 2009. Multifrequency analysis
F. D'Ammando, C. M. Raiteri, M. Villata +112
We report on the extreme gamma-ray activity from the FSRQ PKS 1510-089 observed by AGILE in March 2009. In the same period a radio-to-optical monitoring of the source was provided…
Gamma-ray Burst Prompt Emission: Jitter Radiation in Stochastic Magnetic Field Revisited
J. Mao, J. Wang
We revisit the radiation mechanism of relativistic electrons in the stochastic magnetic field and apply it to the high-energy emissions of gamma-ray bursts (GRBs). We confirm that…
On the nature of GRB 050509b: a disguised short GRB
Gustavo De Barros, Lorenzo Amati, Maria Grazia Bernardini +5
(shortened) Context: GRB GRB 050509b, detected by the \emph{Swift} satellite, is the first case where an X-ray afterglow has been observed associated with a short gamma-ray burst (…
Optics for X-ray telescopes: analytical treatment of the off-axis effective area of mirrors in optical modules
Daniele Spiga
Optical modules for X-ray telescopes comprise several double-reflection mirrors operating in grazing incidence. The concentration power of an optical module, which determines prima…