18 citations · 36 across the 3 of their papers we have counts for
5 papers
A search for lensed gamma-ray bursts in 11 years of observations by Fermi GBM
Björn Ahlgren, Josefin Larsson
Macrolensing of gamma-ray bursts (GRBs) is expected to manifest as a GRB recurring with the same light curve and spectrum as a previous one, but with a different flux and a slightl…
The Fraction of Gamma-ray Bursts with an Observed Photospheric Emission Episode
Zeynep Acuner, Felix Ryde, Asaf Pe'er +2
There is no complete description of the emission physics during the prompt phase in gamma-ray bursts. Spectral analyses, however, indicate that many spectra are narrower than what…
Investigating subphotospheric dissipation in gamma-ray bursts using joint Fermi-Swift observations
Björn Ahlgren, Josefin Larsson, Vlasta Valan +3
The jet photosphere has been proposed as the origin for the gamma-ray burst (GRB) prompt emission. In many such models, characteristic features in the spectra appear below the ener…
Testing a model for subphotospheric dissipation in GRBs: fits to Fermi data constrain the dissipation scenario
Björn Ahlgren, Josefin Larsson, Erik Ahlberg +3
It has been suggested that the prompt emission in gamma-ray bursts (GRBs) could be described by radiation from the photosphere in a hot fireball. Such models must be tested by dire…
Extremely narrow spectrum of GRB110920A: further evidence for localised, subphotospheric dissipation
S. Iyyani, F. Ryde, B. Ahlgren +6
Much evidence points towards that the photosphere in the relativistic outflow in GRBs plays an important role in shaping the observed MeV spectrum. However, it is unclear whether t…