Energy Injection in GRB Afterglow Models

Abstract

We extend the standard fireball model, widely used to interpret gamma-ray burst (GRB) afterglow light curves, to include energy injections, and apply the model to the afterglow light curves of GRB 990510, GRB 000301C and GRB 010222. We show that discrete energy injections can cause temporal variations in the optical light curves and present fits to the light curves of GRB 000301C as an example. A continuous injection may be required to interpret other bursts such as GRB 010222. The extended model accounts reasonably well for the observations in all bands ranging from X-rays to radio wavelengths. In some cases, the radio light curves indicate that additional model ingredients may be needed.

Accepted for publication in the Astrophysical Journal

References in corpus (17)

• Markov Chain Analysis of Cumulative Step-size Adaptation on a Linear Constrained Problem
• The Physics of Gamma-Ray Bursts
• Evidence for a Canonical GRB Afterglow Light Curve in the Swift/XRT Data
• Gamma-Ray Bursts: Progress, Problems & Prospects
• Analysis of the X-ray Emission of Nine Swift Afterglows
• GRB afterglow light curves in the pre-Swift era - a statistical study
• Distribution of Gamma-ray Burst Ejecta Energy with Lorentz Factor
• Jets, Structured Outflows, and Energy Injection in GRB Afterglows: Numerical Modelling
• GRB 021004 modelled by multiple energy injections
• Energy Injection Episodes in Gamma Ray Bursts: The Light Curves and Polarization Properties of GRB 021004
• Modeling the Optical Afterglow of GRB 030329
• Swift XRT Observations of the Afterglow of GRB 050319
• Relativistic Fermi acceleration with shock compressed turbulence
• The Afterglow of GRB010222: A Case of Continuous Energy Injection
• On the Afterglow and Host Galaxy of GRB021004: A Comprehensive Study with the Hubble Space Telescope
• Exact versus approximate solutions in Gamma-Ray Burst afterglows
• Afterglow Light Curves and Broken Power Laws: A Statistical Study

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