Nonthermal emission from star-forming galaxies

Yoel Rephaeli*, Massimo Persic

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


The detections of high-energy γ-ray emission from the nearby starburst galaxies M82 & NGC253, and other local group galaxies, broaden our knowledge of star-driven nonthermal processes and phenomena in non-AGN star-forming galaxies. We review basic aspects of the related processes and their modeling in starburst galaxies. Since these processes involve both energetic electrons and protons accelerated by SN shocks, their respective radiative yields can be used to explore the SN-particle-radiation connection. Specifically, the relation between SN activity, energetic particles, and their radiative yields, is assessed through respective measures of the particle energy density in several star-forming galaxies. The deduced energy densities range from O(10-1) eV cm-3in very quiet environments to O(102) eV cm-3in regions with very high star-formation rates.

Original languageEnglish
Title of host publicationCosmic Rays in Star-Forming Environments - Proceedings of the 2nd Session of the Sant Cugat Forum on Astrophysics
EditorsOlaf Reimer, Diego F. Torres
PublisherSpringer Netherlands
Number of pages17
ISBN (Print)9783642354090
StatePublished - 2013
Event2nd Workshop on cosmic-ray induced phenomenology in star-forming environments, 2012 - Catalonia, Spain
Duration: 16 Apr 201219 Apr 2012

Publication series

NameAstrophysics and Space Science Proceedings
ISSN (Print)1570-6591
ISSN (Electronic)1570-6605


Conference2nd Workshop on cosmic-ray induced phenomenology in star-forming environments, 2012


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