Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011head...12.3411t&link_type=abstract
American Astronomical Society, HEAD meeting #12, #34.11
Astronomy and Astrophysics
Astronomy
Scientific paper
Supernova Remnants (SNRs) are widely discussed as main sources of Galactic Cosmic Rays (CRs) up to 1015 eV or even higher. The CR spectrum observed at Earth is soft (s>2), and so are the gamma-ray spectra observed from a number of SNRs interacting with molecular clouds (MCs). However, current predictions of non-linear particle acceleration theories favor hard CR spectra. Knowing that the CRs near Earth or illuminating MCs in the vicinity of SNR are actually escaped particles that have undergone diffusion, we study how their spectrum depends on the time-dependent acceleration history of the source. We solve the CR transport equation in test-particle approach, combined with numerical simulations of the hydrodynamical evolution of SNRs. Having previously established the importance for the photon emission of particles accelerated at the reverse shock, we calculate the time-dependent gamma-ray spectra from MCs illuminated by the CRs which escaped nearby SNR, and compare our results with data taken with Fermi and Cherenkov telescopes.
Dwarkadas Vikram V.
Pohl Mario
Telezhinsky Igor
No associations
LandOfFree
The Time-dependent Emission from Molecular Clouds Illuminated by Cosmic Rays Escaped from 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 The Time-dependent Emission from Molecular Clouds Illuminated by Cosmic Rays Escaped from Supernova Remnants, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Time-dependent Emission from Molecular Clouds Illuminated by Cosmic Rays Escaped from Supernova Remnants will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1403398