Physics
Scientific paper
Apr 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005xrrc.proce4.13m&link_type=abstract
"X-Ray and Radio Connections (eds. L.O. Sjouwerman and K.K Dyer) Published electronically by NRAO, http://www.aoc.nrao.edu/event
Physics
X-Ray, Radio, Supernova Remnants
Scientific paper
Supernova remnants (SNRs) are believed to be sites of cosmic-ray acceleration. In particular, the region where dense molecular clouds interact with the supernova remnant has been suggested to be an effective site of proton acceleration, which emits synchrotron-dominant X-rays and TeV γ-rays. Dense molecular gas toward the TeV γ/synchrotron X-ray supernova remnant may confirm the existence of cosmic-ray protons. We present new high-resolution millimeter-wave observations of molecular gas at one kiloparsec distance interacting with the TeV γ-ray SNR G347.3-0.5. The clouds are clearly associated with the non-thermal X-ray shell and one of the molecular clumps coincides with X-ray/gamma-ray peak, providing strong evidence for proton acceleration. We have estimated the total energy of accelerated protons to be about 10^{48} erg, which corresponds to an acceleration efficiency of about 0.001, posing an observational constraint on the proton acceleration.
Fukui Yasuo
Hiraga Junko
Moriguchi Yoshiaki
Takahashi Tadayuki
Tamura Katsuhiro
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