Zeynep Acuner
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View article: Bayesian Time-resolved Spectroscopy of Multipulse GRBs: Variations of Emission Properties among Pulses
Bayesian Time-resolved Spectroscopy of Multipulse GRBs: Variations of Emission Properties among Pulses Open
We provide the analysis result files in FITS format for every time bin.
View article: Non-dissipative photospheres in GRBs: spectral appearance in the Fermi/GBM catalogue
Non-dissipative photospheres in GRBs: spectral appearance in the Fermi/GBM catalogue Open
A large fraction of gamma-ray burst (GRB) spectra are very hard below the peak. Indeed, the observed distribution of sub-peak power-law indices, α, has been used as an argument for a photospheric origin of GRB spectra. Here, we investigate…
View article: Statistical Investigations ofthe Emission Processes in Gamma-ray Bursts
Statistical Investigations ofthe Emission Processes in Gamma-ray Bursts Open
Physical emission mechanisms responsible for gamma-ray bursts (GRBs) remain elusive to this day, 50 years after their discovery. Although there are well studied physical models, their power to explain the observed data is a matter of debat…
View article: Clustering of gamma-ray burst types in the Fermi GBM catalogue: indications of photosphere and synchrotron emissions during the prompt phase
Clustering of gamma-ray burst types in the Fermi GBM catalogue: indications of photosphere and synchrotron emissions during the prompt phase Open
Many different physical processes have been suggested to explain the prompt gamma-ray emission in gamma-ray bursts (GRBs). Although there are examples of both bursts with photospheric and synchrotron emission origins, these distinct spectr…
View article: Appearances of the jet photosphere in GRB spectra
Appearances of the jet photosphere in GRB spectra Open
There are several strong arguments for considering photospheric emission in GRBs. Here, we describe the two main appearances of the photospheric emission that are currently discussed. In the multi-component models the photosphere only cont…
View article: Emission from accelerating jets in gamma-ray bursts: radiation-dominated flows with increasing mass outflow rates
Emission from accelerating jets in gamma-ray bursts: radiation-dominated flows with increasing mass outflow rates Open
We study the narrowest spectra expected from gamma-ray bursts. We present an analytical function for the spectrum that is emitted from the photosphere of a radiation-dominated flow that is under acceleration. This is the narrowest possible…