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The two-component jet of GRB 080413B
R. Filgas, T. Kruehler, J. Greiner +16
The quick and precise localization of GRBs by the Swift telescope allows the early evolution of the afterglow light curve to be captured by ground-based telescopes. With GROND meas…
Three years Swift-BAT Survey of AGN: reconciling theory and observations?
D. Burlon, M. Ajello, J. Greiner +4
It is well accepted that unabsorbed as well as absorbed AGN are needed to explain the nature and the shape of the Cosmic X-ray background, even if the fraction of highly absorbed o…
Detection of a Thermal Spectral Component in the Prompt Emission of GRB 100724B
Sylvain Guiriec, Valerie Connaughton, Michael S. Briggs +29
Observations of GRB 100724B with the Fermi Gamma-Ray Burst Monitor (GBM) find that the spectrum is dominated by the typical Band functional form, which is usually taken to represen…
Probing the Transition Between the Synchrotron and Inverse-compton Spectral Components of 1ES 1959+650
E. Bottacini, M. Böttcher, P. Schady +5
1ES 1959+650 is one of the most remarkable high-peaked BL Lacertae objects (HBL). In 2002, it exhibited a TeV gamma-ray flare without a similar brightening of the synchrotron compo…
Optical/IR counterpart to the resolved X-ray jet source CXO J172337.5-373442 and its distance
Bhaswati Mookerjea, Pietro Parisi, Sudip Bhattacharyya +3
We present results of observations in the optical to mid-infrared wavelengths of the X-ray source CXO J172337.5-373442, which was serendipitously discovered in the Chandra images a…
Time-Resolved Spectroscopy of the 3 Brightest and Hardest Short Gamma-Ray Bursts Observed with the FGST Gamma-Ray Burst Monitor
Sylvain Guiriec, Michael S. Briggs, Valerie Connaugthon +25
From July 2008 to October 2009, the Gamma-ray Burst Monitor (GBM) on board the Fermi Gamma-ray Space Telescope (FGST) has detected 320 Gamma-Ray Bursts (GRBs). About 20% of these e…