Comparison of Three Afterglow Morphologies

Conference · Tue Dec 23 00:00:00 EST 2003

DOI:https://doi.org/10.1063/1.1810846· OSTI ID:15013654

Salmonson, J D; Rossi, E; Lazzati, D

Herein we compare three functional families for afterglow morphologies: the homogeneous afterglow with constant shock surface energy density, the structured afterglow for which the energy density decays as a power-law as a function of viewer angle, and the gaussian afterglow which has an exponential decay of energy density with viewer angle. We simulate observed lightcurves and polarization curves for each as seen from a variety of observer vantage points. We find that the homogeneous jet is likely inconsistent with observations and suggest that the future debate on the structure of afterglow jets will be between the other two candidates.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 15013654
• Report Number(s): UCRL-CONF-201612; TRN: US200803%%1061
• Resource Relation: Journal Volume: 727; Conference: Presented at: 2003 Gamma-ray Burst Symposium, Santa Fe, NM, United States, Sep 07 - Sep 12, 2003
• Country of Publication: United States
• Language: English

Related Subjects

99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
71 CLASSICAL AND QUANTUMM MECHANICS
GENERAL PHYSICS
AFTERGLOW
DECAY
ENERGY DENSITY
FUNCTIONALS
POLARIZATION
SURFACE ENERGY