# Dirty Fireballs and Orphan Afterglows: A Tale of Two Transients

@article{Rhoads2003DirtyFA,
title={Dirty Fireballs and Orphan Afterglows: A Tale of Two Transients},
journal={The Astrophysical Journal},
year={2003},
volume={591},
pages={1097-1103}
}
• Published 1 January 2003
• Physics
• The Astrophysical Journal
Orphan afterglows are transient events that are produced by cosmological fireballs and resemble gamma-ray burst (GRB) afterglows yet are not accompanied by gamma rays. Such transients may be produced by jetlike GRBs observed off-axis and therefore hold great promise as a test of GRB collimation. However, orphans may also be produced by "dirty fireballs," i.e., cosmological fireballs whose ejecta carry too many baryons to produce a GRB. A well-designed orphan afterglow search can distinguish… Expand
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