Physics
Scientific paper
Apr 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005xrrc.proce4.02d&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
Shocks in supernova remnants are long thought to be responsible for the acceleration of Galactic cosmic rays up to the knee (above 1000 TeV). Synchrotron radio emission attests to the presence of GeV accelerated electrons. With the advent of X-ray spectro-imagery, observational evidence has been obtained for the acceleration of electrons up to energies of about 100 TeV. I will review the recent observations of non-thermal emission in young ejecta-dominated supernova remnants and in synchrotron-dominated supernova remnants like SN1006 and G347.3-0.5. I will illustrate the importance of combining X-ray and radio data for characterizing the synchrotron emission and its spectral variations, as well as for studying the interaction of the blast wave with the ambient medium. These results are crucial for the understanding of particle acceleration in supernova remnants and the origin of the Galactic cosmic rays. They uniquely provide constraints on poorly known aspects of particle acceleration like the magnetic turbulence, the acceleration efficiency and, potentially, the level of particle injection.
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