# Gamma-ray bursts from synchrotron self-Compton emission

@article{Stern2004GammarayBF,
title={Gamma-ray bursts from synchrotron self-Compton emission},
author={Boris E. Stern and Juri Poutanen},
journal={Monthly Notices of the Royal Astronomical Society},
year={2004},
volume={352}
}
• Published 2004
• Physics
• Monthly Notices of the Royal Astronomical Society
The emission mechanism of gamma-ray bursts (GRBs) is still a matter of debate. The standard synchrotron energy spectrum of cooling electrons F E E -1/2 is much too soft to account for the majority of the observed spectral slopes. An alternative in the form of quasi-thermal Comptonization in a high-compactness source has difficulties in reproducing the peak of the observed photon distribution below a few hundred keV. We show here that for typical parameters expected in the GRB ejecta the… Expand

#### Figures from this paper

Prompt gamma-ray burst emission from gradual energy dissipation
I describe the main aspects of a model for the gamma-ray burst (GRB) emission in which energy is dissipated gradually in a Poynting-flux-dominated flow. In this picture, the energy of the radiatingExpand
Reconciling observed gamma-ray burst prompt spectra with synchrotron radiation?
Context. Gamma-ray burst emission in the prompt phase is often interpreted as synchrotron radiation from high-energy electrons accelerated in internal shocks. Fast synchrotron cooling of a power-lawExpand
Low-energy Spectra of Gamma-ray Bursts from Cooling Electrons
• Physics
• 2017
The low-energy spectra of gamma-ray bursts' (GRBs) prompt emission are closely related to the energy distribution of electrons, which is further regulated by their cooling processes. We develop aExpand
Prompt GRB emission from gradual energy dissipation
I calculate the emission expected from a Poynting-flux-dominated gamma-ray burst (GRB) flow in which energy is dissipated gradually by magnetic reconnection. In this picture, the energy of theExpand
GAMMA-RAY BURSTS FROM MAGNETIZED COLLISIONALLY HEATED JETS
• Physics
• 2011
Jets producing gamma-ray bursts (GRBs) are likely to carry a neutron component that drifts with respect to the proton component. The neutron-proton collisions strongly heat the jet and generateExpand
A marginally fast-cooling proton–synchrotron model for prompt GRBs
• Physics
• 2021
A small fraction of GRBs with available data down to soft X-rays (∼ 0.5 keV) have been shown to feature a spectral break in the low-energy part (∼1-10 keV) of their prompt emission spectrum. TheExpand
Stochastic acceleration model of gamma-ray burst with decaying turbulence
• Physics
• 2015
The spectral shape of the prompt emissions of gamma-ray bursts (GRBs) is typically expressed by the Band function: smooth joining of two power-law functions for high-energy and low-energy regions. ToExpand
Simulations of gamma-ray burst afterglows with a relativistic kinetic code
• Physics
• 2014
Aims. This paper introduces a kinetic code that simulates gamma-ray burst (GRB) afterglow emission from the external forward shock and presents examples of some of its applications. One interestingExpand
Prompt high-energy emission from gamma-ray bursts in the internal shock model
• Physics
• 2009
Context. Gamma-ray bursts (GRB) are powerful, short duration events with a spectral luminosity peaking in the keV-MeV (BATSE) range. The prompt emission is thought to arise from electrons acceleratedExpand
Signatures of a Maxwellian component in shock-accelerated electrons in GRBs
• Physics
• 2009
Recent particle-in-cell simulations suggest that a large f raction of the energy dissipated in a relativistic shock is deposited into a Maxwellian distribu tion of electrons that is connected to theExpand

#### References

SHOWING 1-10 OF 33 REFERENCES
Gamma-Ray Bursts from Up-Scattered Self-Absorbed Synchrotron Emission
• Physics
• 2000
We calculate the synchrotron self-Compton emission from internal shocks occurring in relativistic winds as a source of gamma-ray bursts, with allowance for self-absorption. For plausible modelExpand
Synchrotron Radiation as the Source of Gamma-Ray Burst Spectra
• Physics
• 2000
We investigate synchrotron emission models as the source of gamma-ray burst (GRB) spectra. We show that including the possibility for synchrotron self-absorption, a "smooth cutoff" to the electronExpand
A γ-ray burst with a high-energy spectral component inconsistent with the synchrotron shock model
• Physics, Medicine
• Nature
• 2003
An observation of a high-energy (multi-MeV) spectral component in the burst of 17 October 1994 that is distinct from the previously observed lower-energy γ-ray component is reported. Expand
Constraints on the emission mechanisms of gamma‐ray bursts
• Physics
• 1999
ABSTRACT If the emission of gamma–ray bursts were due to the synchrotron process in the stan-dard internal shock scenario, then the typical observed spectrum should have a slopeF ν ∝ν −1/2 , whichExpand
Synchrotron and Synchrotron Self-Compton Emission and the Blast-Wave Model of Gamma-Ray Bursts
• Physics
• 1998
We investigate the dynamics and radiation from a relativistic blast wave that decelerates as it sweeps up ambient matter. The bulk kinetic energy of the blast-wave shell is converted into internalExpand
Quasi-thermal Comptonization and gamma-ray bursts
• Physics
• 1998
Quasi-thermal Comptonization in internal shocks formed between relativistic shells can account for the high energy emission of gamma-ray bursts. This is in fact the dominant cooling mechanism if theExpand
BATSE observations of gamma-ray burst spectra. I: Spectral diversity
We studied the time-averaged gamma-ray burst spectra accumulated by the spectroscopy detectors of the Burst and Transient Source Experiment. The spectra are described well at low energy by aExpand
On the nature of nonthermal radiation from cosmological gamma-ray bursters
Relativistic electron-positron winds with strong magnetic fields are considered as a source of radiation for cosmological $\gamma$-ray bursters. Such a wind is generated by a millisecond pulsar withExpand
Gamma-ray burst spectra from photon-deficient Compton scattering by nonthermal electrons
• Physics
• 1986
Consideration is given to a model of gamma-ray burst sources based on repeated Compton scatterings of soft photons by relativistic nonthermal electrons. Relativistic electrons which are continuouslyExpand
Gamma-ray bursts and the fireball model
Abstract Gamma-ray bursts (GRBs) have puzzled astronomers since their accidental discovery in the late 1960s. The BATSE detector on the COMPTON-GRO satellite has been detecting one burst per day forExpand