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From the earliest pulses to the latest flares in long GRBs
A. Pescalli, M. Ronchi, G. Ghirlanda +1
The prompt emission of Gamma Ray Bursts extends from the early pulses observed in gamma-rays (>15 keV) to very late flares of X-ray photons (0.3-10 keV). The duration of prompt gam…
Consistency with synchrotron emission in the bright GRB 160625B observed by Fermi
M. E. Ravasio, G. Oganesyan, G. Ghirlanda +4
We present time resolved spectral analysis of prompt emission from GRB 160625B, one of the brightest bursts ever detected by Fermi in its nine years of operations. Standard empiric…
Spectroscopic identification of r-process nucleosynthesis in a double neutron star merger
E. Pian, P. D'Avanzo, S. Benetti +81
The merger of two neutron stars is predicted to give rise to three major detectable phenomena: a short burst of gamma-rays, a gravitational wave signal, and a transient optical/nea…
Short GRBs at the dawn of the gravitational wave era
G. Ghirlanda, O. S. Salafia, A. Pescalli +16
We derive the luminosity function and redshift distribution of short Gamma Ray Bursts (SGRBs) using (i) all the available observer-frame constraints (i.e. peak flux, fluence, peak…
Searching for narrow absorption and emission lines in XMM-Newton spectra of gamma-ray bursts
S. Campana, V. Braito, P. D'Avanzo +7
We present the results of a spectroscopic search for narrow emission and absorption features in the X-ray spectra of long gamma-ray burst (GRB) afterglows. Using XMM-Newton data, b…
Are LGRBs biased tracers of star formation? Clues from the host galaxies of the Swift/BAT6 complete sample of bright LGRBs. II: star formation rates and metallicities at z < 1
J. Japelj, S. D. Vergani, R. Salvaterra +21
Long gamma-ray bursts (LGRBs) are associated with the deaths of massive stars and could thus be a potentially powerful tool to trace cosmic star formation. However, especially at l…