Publications (10)
GRB081028 and its late-time afterglow re-brightening
R. Margutti, F. Genet, J. Granot +19
Swift captured for the first time a smoothly rising X-ray re-brightening of clear non-flaring origin after the steep decay in a long gamma-ray burst (GRB): GRB081028. A rising phas…
Unveiling the origin of X-ray flares in Gamma-Ray Bursts
G. Chincarini, J. Mao, R. Margutti +10
We present an updated catalog of 113 X-ray flares detected by Swift in the ~33% of the X-ray afterglows of Gamma-Ray Bursts (GRB). 43 flares have a measured redshift. For the first…
GRB090111: extra soft steep decay emission and peculiar re-brightening
R. Margutti, T. Sakamoto, G. Chincarini +8
We present a detailed study of GRB090111, focusing on its extra soft power-law photon index Gamma>5 at the very steep decay phase emission (power-law index alpha=5.1, steeper than…
Flares in Gamma Ray Bursts
G. Chincarini, J. Mao, F. Pasotti +4
The flare activity that is observed in GRBs soon after the prompt emission with the XRT (0.3-10 KeV) instrument on board of the Swift satellite is leading to important clues in rel…
When GRB afterglows get softer, hard components come into play
A. Moretti, R. Margutti, F. Pasotti +9
We aim to investigate the ability of simple spectral models to describe the GRB early afterglow emission. We performed a time resolved spectral analysis of a bright GRB sample dete…
Temporal variability of GRB early X-ray afterglows and GRB080319B prompt emission
R. Margutti, C. Guidorzi, G. Chincarini +3
We performed the first systematic search for the minimum variability time scale between 0.3 and 10 keV studying the 28 brightest early (<3000 s) afterglows detected by Swift-XRT up…