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Fermi-LAT Observations of the Gamma-ray Burst GRB 130427A
LAT collaboration, GBM collaboration
The observations of the exceptionally bright gamma-ray burst (GRB) 130427A by the Large Area Telescope aboard the Fermi Gamma-ray Space Telescope provide constraints on the nature…
XIPE: the X-ray Imaging Polarimetry Explorer
Paolo Soffitta, Xavier Barcons, Ronaldo Bellazzini +96
X-ray polarimetry, sometimes alone, and sometimes coupled to spectral and temporal variability measurements and to imaging, allows a wealth of physical phenomena in astrophysics to…
An imperfect double: probing the physical origin of the low-frequency QPO and its harmonic in black hole binaries
Magnus Axelsson, Chris Done, Linnea Hjalmarsdotter
We extract the spectra of the strong low-frequency quasi-periodic oscillation (QPO) and its harmonic during the rising phase of an outburst in the black-hole binary XTE J1550-564.…
Variable jet properties in GRB110721A: Time resolved observations of the jet photosphere
Shabnam Iyyani, Felix Ryde, Magnus Axelsson +8
{\it Fermi Gamma-ray Space Telescope} observations of GRB110721A have revealed two emission components from the relativistic jet: emission from the photosphere, peaking at $\sim 10…
Time-resolved Analysis of Fermi GRBs with Fast and Slow-Cooled Synchrotron Photon Models
J. M. Burgess, R. D. Preece, V. Connaughton +20
Time-resolved spectroscopy is performed on eight bright, long gamma-ray bursts (GRBs) dominated by single emission pulses that were observed with the {\it Fermi Gamma-ray Space Tel…
The First Fermi LAT Gamma-Ray Burst Catalog
LAT Collaboration
In three years of observations since the beginning of nominal science operations in August 2008, the Large Area Telescope (LAT) on board the Fermi Gamma Ray Space Telescope has obs…