Spectrum of Subrelativistic CRs and the Origin of the Galactic Hard X-Rays.

Details Spectrum of Subrelativistic CRs and the Origin of the Galactic Hard X-Rays. Spectrum of Subrelativistic CRs and the Origin of the Galactic Hard X-Rays.

Aug 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001icrc....6.2360d&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

We investigate the origin of the nonthermal Xray emission from the Galactic ridge in the range 10 - 200 keV. We consider bremsstrahlung of subrelativistic cosmic ray protons and electrons as production processes. From the solution of the kinetic equations describing the processes of particle in situ acceleration and spatial propagation we derive parameters of the spectra for protons and electrons. It is shown that the spectra must be very hard and have a cut-off at an energy ˜ 150 - 500 MeV for protons or ≤ 300 keV for electrons. For in situ acceleration the flux of accelerated particles consists mainly of protons since the ratio of the accelerated protons to electrons is large and the flux of nuclei with charges Z > 1 is strongly suppressed. If on the contrary the hard X-ray emission from the disk is emitted by subrelativistic electrons acceleration of protons is suppressed. We discuss briefly the possible origin of this effect. This analysis of the hard X-ray emission permits to derive spectra of subrelativistic cosmic rays and thus covers the gap between the observed spectrum of relativistic cosmic rays and the thermal spectrum of background thermal particles.

Affiliated with

Also associated with

No associations

Rating

Spectrum of Subrelativistic CRs and the Origin of the Galactic Hard X-Rays. 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 Spectrum of Subrelativistic CRs and the Origin of the Galactic Hard X-Rays., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spectrum of Subrelativistic CRs and the Origin of the Galactic Hard X-Rays. will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-795084