2010ApJ...723L.122U

Query : 2010ApJ...723L.122U

2010ApJ...723L.122U - Astrophys. J., 723, L122-L126 (2010/November-1)

Gamma-ray emission from crushed clouds in supernova remnants.

UCHIYAMA Y., BLANDFORD R.D., FUNK S., TAJIMA H. and TANAKA T.

Abstract (from CDS):

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 π0-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.

Abstract Copyright: ∼

Journal keyword(s): acceleration of particles - cosmic rays - radiation mechanisms: non-thermal

Simbad objects: 6

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Number of rows : 6
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 IC 443 SNR 06 17 00.0000000 +22 34 11.998901           ~ 1314 1
2 SNR G347.3-00.5 SNR 17 12 27 -39 41.2     12.27     ~ 761 1
3 SNR G348.5+00.1 SNR 17 14 31.780 -38 28 34.50           ~ 233 3
4 SNR G006.4-00.1 SNR 18 00 31.2011719 -23 25 48.001099           ~ 782 1
5 SNR G034.6-00.5 SNR 18 56 10.650 +01 13 21.30           ~ 1034 2
6 SNR G049.1-00.1 SNR 19 23 19.300 +14 09 21.00           ~ 309 0

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