Delayed X-Ray Afterglows from Obscured Gamma-Ray Bursts in Star-Forming Regions

Abstract

For Gamma-Ray Bursts occurring in dense star-forming regions, the X-ray afterglow behavior minutes to days after the trigger may be dominated by the small-angle scattering of the prompt X-ray emission off dust grains. We give a simple illustrative model for the X-ray light curves at different X-ray energies, and discuss possible implications. A bump followed by a steeper decay in soft X-rays is predicted for bursts which are heavily obscured in the optical.

6 pages, aas latex, 1 figure, subm. to ApJ(Lett) 7/18/2000

References in corpus (3)

• Dust sublimation by GRBs and its implications
• Dust Echos from Gamma Ray Bursts
• Compton Echoes from Gamma-ray Bursts

Cited by in corpus (14)

• Gamma-Ray Bursts: Progress, Problems & Prospects
• Theories of Gamma-Ray Bursts
• Variabilities of Gamma-Ray Burst Afterglows: Long-acting Engine, Anisotropic Jet or Many Fluctuating Regions?
• Behavior of X-Ray Dust Scattering and Implications for X-Ray Afterglows of Gamma-Ray Bursts
• Pre-ALMA observations of GRBs in the mm/submm range
• GRB 090417B and its Host Galaxy: A Step Towards an Understanding of Optically-Dark Gamma-Ray Bursts
• Fast X-ray Transients and Their Connection to Gamma-Ray Bursts
• Echo Emission From Dust Scattering and X-Ray Afterglows of Gamma-Ray Bursts
• The Dust Scattering Model Can Not Explain The Shallow X-ray Decay in GRB Afterglows
• The visibility of gamma-ray burst afterglows in dusty star-forming regions
• Spectral Softening in X-ray Afterglow of GRB 130925A as Predicted by Dust Scattering Model
• The dark burst 010214 with BeppoSAX: possible variable absorption and jet X-ray emission
• Observing scattered X-ray radiation from gamma-ray bursts: a way to measure their collimation angles
• Light Curves of Jetted Gamma-Ray Burst Afterglows in Circumstellar Clouds