Radiative Transfer Models for Gamma-Ray Bursts

Abstract

We present global radiative transfer models for heated relativistic jets. The simulations include all relevant radiative processes, starting deep in the opaque zone and following the evolution of radiation to and beyond the photosphere of the jet. The transfer models are compared with three gamma-ray bursts GRB 990123, GRB 090902B, and GRB 130427A, which have well-measured and different spectra. The models provide good fits to the observed spectra in all three cases, and we obtain estimates for the jet magnetization parameter ${\epsilon }_{\mathrm{B}}$ and the Lorentz factor $\Gamma$. In the small sample of three bursts, ${\epsilon }_{\mathrm{B}}$ varies between 0.01 and 0.05, and $\Gamma$ varies between 400 and 1200.

18 pages, 8 figures, accepted to ApJ

References in corpus (12)

• Prompt GRB emission from gradual energy dissipation
• Quasi-blackbody component and radiative efficiency of the prompt emission of gamma-ray bursts
• Very high efficiency photospheric emission in long duration gamma-ray bursts
• Prompt emission spectra from the photosphere of a GRB
• Spectral and timing properties of a dissipative GRB photosphere
• Relativistic magnetic reconnection in pair plasmas and its astrophysical applications
• Towards a Better Understanding of the GRB Phenomenon: a New Model for GRB Prompt Emission and its effects on the New Non-Thermal L${}_{\mathrm{i}}^{\mathrm{NT}}$-E${}_{\mathrm{peak},\mathrm{i}}^{\mathrm{rest},\mathrm{NT}}$ relation
• The width of gamma-ray burst spectra
• Poynting flux dominated jets challenged by their photospheric emission
• The sharpness of gamma-ray burst prompt emission spectra
• Non-thermal Gamma-ray Emission from Delayed Pair Breakdown in a Magnetized and Photon-rich Outflow
• Measuring Ambient Densities and Lorentz Factors of Gamma-Ray Bursts from GeV and Optical Observations

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• An efficient method for fitting radiation-mediated shocks to gamma-ray burst data: The Kompaneets RMS approximation
• Polarization constraints on the geometry of the magnetic field in the external shock of gamma-ray bursts
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