A Late, Infrared Flash from the Afterglow of GRB 050319

2006/02/17 by Koshy George, D. P. K. Banerjee, Dipankar P. K. Banerjee +4
Physics and Astronomy · #Afterglow #Astronomy #Astrophysical Phenomena and Observations #Astrophysics #Context (archaeology) #Flash (photography) #Gamma-ray burst #Gamma-ray bursts and supernovae #Geology #Infrared #Optics #Physics #Stellar, planetary, and galactic studies #astro-ph

paper · pdf · doi:10.1086/503360

published as Astrophys.J. 640 (2006) L13-L16 · Accepted in ApJ (Letters)

arxiv created 2006/02/17 · openalex publication_date 2006/03/03 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06

Abstract

We report the detection of a bright, near-infrared flash from the afterglow of gamma-ray burst GRB 050319, 6.15 hr after the burst. The IR flash faded rapidly from J = 13.12 mag to J > 15.5 mag in about 4 minutes. There are no reported simultaneous observations at other wavelengths, thus making it a unique event. We study the implications of its late timing in the context of current theoretical models for GRB afterglows.

Citations

• A link between prompt optical and prompt γ-ray emission in γ-ray bursts
• The bright optical afterglow of the nearby γ-ray burst of 29 March 2003
• Gamma-Ray Burst Environments and Progenitors
• Theories of Gamma-Ray Bursts
• Some Observational Consequences of Gamma‐Ray Burst Shock Models