Refreshed Shocks and Afterglow Longevity in Gamma-Ray Bursts

  • Rees M
  • Mészáros P
330Citations
Citations of this article
25Readers
Mendeley users who have this article in their library.

Abstract

We consider fireball models where the ejecta have a range of bulk Lorentz factors, so that the inner (lower Γ) parts may carry most of the mass, or even most of the energy. The outer shock and contact discontinuity decelerate as the fireball sweeps up external matter. This deceleration allows slower ejecta to catch up, replenishing and reenergizing the reverse shock and boosting the momentum in the blast wave. In consequence, the energy available to power the afterglow may substantially exceed that of the burst itself. Such models allow a wide range of possibilities for the afterglow evolution, even in the case of spherically symmetric expansion.

Cite

CITATION STYLE

APA

Rees, M. J., & Mészáros, P. (1998). Refreshed Shocks and Afterglow Longevity in Gamma-Ray Bursts. The Astrophysical Journal, 496(1), L1–L4. https://doi.org/10.1086/311244

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free