Accession Number:

ADA532420

Title:

A Leptonic-Hadronic Model for the Afterglow of Gamma-Ray Burst 090510

Descriptive Note:

Journal article

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC SPACE SCIENCE DIV

Personal Author(s):

Report Date:

2010-11-20

Pagination or Media Count:

5.0

Abstract:

We model multiwavelength afterglow data from the short gamma-ray burst GRB 090510 using a combined leptonic-hadronic model of synchrotron radiation from an adiabatic blast wave. High-energy, 100 MeV, emission in our model is dominated by proton-synchrotron radiation, while electron-synchrotron radiation dominates in the X-ray and ultraviolet wavelengths. The collimation-corrected GRB energy, depending on the jet-break time, in this model could be as low as 3 x 10exp 51 erg but two orders of magnitude larger than the absolute gamma-ray energy. We also calculated the opacities for electron-positron pair production by gamma-rays and found that TeV gamma-rays from proton-synchrotron radiation can escape the blast wave at early time, and their detection can provide evidence of a hadronic emission component dominating at high energies.

Subject Categories:

  • Astrophysics
  • Atmospheric Physics
  • Atomic and Molecular Physics and Spectroscopy
  • Nuclear Physics and Elementary Particle Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE