Physics
Scientific paper
Aug 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001icrc....6.2447v&link_type=abstract
Proceedings of the 27th International Cosmic Ray Conference. 07-15 August, 2001. Hamburg, Germany. Under the auspices of the Int
Physics
Scientific paper
The Galactic (nucleonic) cosmic-ray spectrum up to the knee (E ˜ 1015 eV) is believed to originate from acceleration processes occurring at supernova remnant shocks. This idea is confirmed by theoretical predictions, which give a similar estimate for the maximum particle energy, which can be reached at these shocks. Electrons with energies E ˜ 1014 eV radiate X-ray photons in the ˜ 10 - 100 µG magnetic fields present in many young supernova remnants. These electrons (near the knee), give rise to a nonthermal X-ray component in the spectrum of young supernova remnants. Recent observations of SN1006 and G347.3-0.5 show these nonthermal X-rays. We have combined hydrodynamical calculations of the evolution of a young remnant with an algorithm which simultaneously calculates the associated particle acceleration, in the test-particle approximation. We present the resulting synchrotron maps, at different Xray frequencies, and photon spectra of the synchrotron radiation. Our method allows for calculating photon and electron spectra at different regions within the remnant.
Achterberg Abraham
van der Swaluw E.
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