SYNCHROTRON ORIGIN OF THE TYPICAL GRB BAND FUNCTION—A CASE STUDY OF GRB 130606B

Journal Article · Sun Jan 10 00:00:00 EST 2016 · Astrophysical Journal

DOI:https://doi.org/10.3847/0004-637X/816/2/72· OSTI ID:22521702

Zhang, Bin-Bin; Briggs, Michael S. ^[1]; Uhm, Z. Lucas; Zhang, Bing ^[2]; Connaughton, Valerie ^[3]

---

1. Center for Space Plasma and Aeronomic Research (CSPAR), University of Alabama in Huntsville, Huntsville, AL 35899 (United States)
2. Department of Physics and Astronomy, University of Nevada, Las Vegas, NV 89154 (United States)
3. Science and Technology Institute, Universities Space Research Association, Huntsville, AL 35805 (United States)

We perform a time-resolved spectral analysis of GRB 130606B within the framework of a fast-cooling synchrotron radiation model with magnetic field strength in the emission region decaying with time, as proposed by Uhm and Zhang. The data from all time intervals can be successfully fit by the model. The same data can be equally well fit by the empirical Band function with typical parameter values. Our results, which involve only minimal physical assumptions, offer one natural solution to the origin of the observed GRB spectra and imply that, at least some, if not all, Band-like GRB spectra with typical Band parameter values can indeed be explained by synchrotron radiation.

• OSTI ID: 22521702
• Journal Information: Astrophysical Journal, Vol. 816, Issue 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
COOLING
COSMIC GAMMA BURSTS
EMISSION SPECTRA
MAGNETIC FIELDS
SYNCHROTRON RADIATION
TIME RESOLUTION