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Magnetically and Baryonically Dominated Photospheric Gamma-Ray Burst Model Fits to Fermi LAT Observations
Péter Veres, Bin-Bin Zhang, Péter Mészáros
We consider gamma-ray burst models where the radiation is dominated by a photospheric region providing the MeV Band spectrum, and an external shock region responsible for the GeV r…
Searching for galactic sources in the Swift GRB catalog
J. C. Tello, A. J. Castro-Tirado, J. Gorosabel +6
Since the early 1990s Gamma Ray Bursts have been accepted to be of extra-galactic origin due to the isotropic distribution observed by BATSE and the redshifts observed via absorpti…
Improved Asteroid Astrometry and Photometry with Trail Fitting
Peter Vereš, Robert Jedicke, Larry Denneau +3
Asteroid detections in astronomical images may appear as trails due to a combination of their apparent rate of motion and exposure duration. Nearby asteroids in particular typicall…
Gamma Ray Bursts: recent results and connections to very high energy Cosmic Rays and Neutrinos
Péter Mészáros, Katsuaki Asano, Péter Veres
Gamma-ray bursts are the most concentrated explosions in the Universe. They have been detected electromagnetically at energies up to tens of GeV, and it is suspected that they coul…
The extremely high peak energy of GRB 110721A in the context of a dissipative photosphere synchrotron emission model
Péter Veres, Bin-Bin Zhang, Péter Mészáros
The Fermi observations of GRB 110721A (Axelsson et al. 2012) have revealed an unusually high peak energy ~ 15 MeV in the first time bin of the prompt emission. We find that an inte…
Cosmology with Gamma-Ray Bursts Using k-correction
Andras Kovacs, Zsolt Bagoly, Lajos G. Balazs +2
In the case of Gamma-Ray Bursts with measured redshift, we can calculate the k-correction to get the fluence and energy that were actually produced in the comoving system of the GR…