GAMMA-RAY EMISSION FROM CRUSHED CLOUDS IN SUPERNOVA REMNANTS
Uchiyama Y, Blandford RD, Funk S, Tajima H, Tanaka T (2010)
Publication Type: Journal article
Publication year: 2010
Journal
Book Volume: 723
Pages Range: L122-L126
Journal Issue: 1
DOI: 10.1088/2041-8205/723/1/L122
Abstract
It is shown that the radio and gamma-ray emission observed from newly found "GeV-bright" supernova remnants (SNRs) can be explained by a model in which a shocked cloud and shock-accelerated cosmic rays (CRs) frozen in it are simultaneously compressed by the supernova blast wave as a result of formation of a radiative cloud shock. Simple reacceleration of pre-existing CRs is generally sufficient to power the observed gamma-ray emission through the decays of pi(0)-mesons produced in hadronic interactions between high-energy protons (nuclei) and gas in the compressed-cloud layer. This model provides a natural account of the observed synchrotron radiation in SNRs W51C, W44, and IC 443 with flat radio spectral index, which can be ascribed to a combination of secondary and reaccelerated electrons and positrons.
Authors with CRIS profile
Involved external institutions
Stanford National Accelerator Laboratory (SLAC)
United States (USA) (US)
Nagoya University / 名古屋大学
Japan (JP)
Stanford University
United States (USA) (US)
United States (USA) (US)
Nagoya University / 名古屋大学
Japan (JP)
Stanford University
United States (USA) (US)
How to cite
APA:
Uchiyama, Y., Blandford, R.D., Funk, S., Tajima, H., & Tanaka, T. (2010). GAMMA-RAY EMISSION FROM CRUSHED CLOUDS IN SUPERNOVA REMNANTS. Astrophysical Journal Letters, 723(1), L122-L126. https://doi.org/10.1088/2041-8205/723/1/L122
MLA:
Uchiyama, Yasunobu, et al. "GAMMA-RAY EMISSION FROM CRUSHED CLOUDS IN SUPERNOVA REMNANTS." Astrophysical Journal Letters 723.1 (2010): L122-L126.
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