Cosmic Rays around Supernova Remnants

Dear Colleagues,

Supernova remnants (SNR) are probably a main source of high-energy particles in the galaxy, although this remains to be proved. Observations of related electromagnetic radiation (gamma rays, X-ray, synchrotron) provide clues to the details of the mechanisms involved in the acceleration and propagation of these cosmic rays (CR). Interaction with nearby gas clouds, amplification of the magnetic field, and secondary particle production in the remnants are of special importance. While many SNR have been observed from radio to gamma rays, the emission process may be hadronic or leptonic, or a combination of these, with an observational distinction often difficult to assess. Synchrotron X-rays probe very high-energy electrons and acceleration on short time scales. SNR affect CR observed at the earth, for example secondary positrons and antiprotons, as well as secondary nuclei. Evidence for a nearby recent supernova via radioactive ⁶⁰Fe is also changing our view of the subject. This Special Issue aims to cover current research on cosmic rays in and around SNR, both theoretical and observational. Other related sources like pulsar wind nebulae, pulsars and superbubbles, may also be addressed.

Dr. Andrew W. Strong
Guest Editor

 Reference

1. Sano, H.; Rowell, G.; Reynoso, E. M.; Jung-Richardt, I.; Yamane, Y.; Nagaya, T.; Yoshiike, S.; Hayashi, K.; Torii, K.; Maxted, N.; et al. Possible Evidence for Cosmic-Ray Acceleration in the Type Ia Supernova Remnant RCW 86: Spatial Correlation between TeV Gamma rays and Interstellar Atomic Protons. Astrophys. J. 2018. (Draft version)
2. D'Angelo, M.; Blasi, P.; Amato, E. Grammage of cosmic rays around Galactic supernova remnants. Phys. Rev. D 2016, 94, 083003.
3. Gabici, S.; Krause, J.; Morlino, G.; Nava, L. Acceleration of cosmic rays and gamma-ray emission from supernova remnant/molecular cloud associations. In Proceeding of EPJ Web of Conferences, Geneva, Switzerland, December 2015.
4. Berezhko, E. G. Origin of Galactic Cosmic Rays from Supernova Remnants. Nucl. Phys. B 2014, 256, 23–35.
5. Grenier, I.A.; Black, J.H.; Strong, A.W. The Nine Lives of Cosmic Rays in Galaxies. Annu. Rev. Astron. Astrophys. 2015, 53, 199–246.

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• cosmic rays
• supernova remnants
• interstellar medium