Cosmic rays, gamma rays and synchrotron radiation from the Galaxy

Journal Article · Mon Jul 30 00:00:00 EDT 2012 · Journal of Physics. Conference Series (Online)

DOI:https://doi.org/10.1088/1742-6596/375/1/052025· OSTI ID:1332866

Orlando, Elena ^[1]

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1. Stanford Univ., Stanford, CA (United States)

Galactic cosmic rays (CR), interstellar gamma-ray emission and synchrotron radiation are related topics. CR electrons propagate in the Galaxy and interact with the interstellar medium, producing inverse-Compton emission measured in gamma rays and synchrotron emission measured in radio. I present an overview of the latest results with Fermi/LAT on the gamma-ray diffuse emission induced by CR nuclei and electrons. Then I focus on the recent complementary studies of the synchrotron emission in the light of the latest gamma-ray results. Relevant observables include spectral indices and their variations, using surveys over a wide range of radio frequencies. As a result, this paper emphasizes the importance of using the parallel study of gamma rays and synchrotron radiation in order to constrain the low-energy interstellar CR electron spectrum, models of propagation of CRs, and magnetic fields.

• Research Organization: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
• Sponsoring Organization: USDOE
• Grant/Contract Number: AC02-76SF00515
• OSTI ID: 1332866
• Alternate ID(s): OSTI ID: 22021276; OSTI ID: 1362080
• Report Number(s): TAUP--2011
• Journal Information: Journal of Physics. Conference Series (Online), Journal Name: Journal of Physics. Conference Series (Online) Journal Issue: 5 Vol. 375; ISSN 1742-6596
• Publisher: Institute of Physics (IOP)
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS