Non-thermal X-ray emission from young supernova remnants

Details Non-thermal X-ray emission from young supernova remnants Non-thermal X-ray emission from young supernova remnants

Jul 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004a%26a...421.1021v&link_type=abstract

Astronomy and Astrophysics, v.421, p.1021-1030 (2004)

Astronomy and Astrophysics

Astrophysics

7

Ism: Cosmic Rays, Ism: Supernova Remnants, Shock Waves, Acceleration Of Particles

Scientific paper

The Galactic (nucleonic) cosmic-ray spectrum up to the knee (E˜ 1015 eV) is attributed to acceleration processes that take place near the external shocks around supernova remnants (SNRs). Theoretical predictions based on the theory of diffusive shock acceleration give a similar estimate for the maximum particle energy that can be reached at these shocks: E ˜ 1014-1015 eV. Electrons with energies E ˜ 1014 eV radiate X-ray photons in the ˜10-100 ; μG magnetic fields present in many young SNRs. These electrons near the knee give rise to a non-thermal X-ray component in the spectrum of young supernova remnants. Recent observations of SN1006 and G347.3-0.5 confirm this prediction.
We have combined hydrodynamical calculations of the evolution of a young remnant with an algorithm that simultaneously calculates the acceleration of electrons, their radiation losses and the synchrotron spectrum of a young supernova remnant. The electrons are treated using a test-particle approximation.
We give a semi-analytical estimate of the maximum electron energy and typical synchrotron frequencies for young remnants at the end of the free-expansion stage of their evolution. We present spectra of the energy distribution of the electrons in a young supernova remnant, and construct a synchrotron map in the X-ray domain, assuming Bohm diffusion within the remnant and a shock-compressed magnetic field.

Affiliated with

Also associated with

No associations

Rating

Non-thermal X-ray emission from young supernova remnants does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Non-thermal X-ray emission from young supernova remnants, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-thermal X-ray emission from young supernova remnants will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1074936