Diffuse Synchrotron Emission from Galactic Cosmic Ray Electrons

Abstract

Synchrotron diffuse radiation (SDR) emission is one of the major Galactic components, in the 100 MHz up to 100 GHz frequency range. Its spectrum and sky map provide valuable measure of the galactic cosmic ray electrons (GCRE) in the relevant energy range, as well as of the strength and structure of the Galactic magnetic fields (GMF), both regular and random ones. This emission is an astrophysical sky foreground for the study of the Cosmic Microwave Background (CMB), and the extragalactic microwave measurements, and it needs to be modelled as better as possible. In this regard, in order to get an accurate description of the SDR in the Galaxy, we use - for the first time in this context - 3-dimensional GCRE models obtained by running the DRAGON code. This allows us to account for a realistic spiral arm pattern of the source distribution, demanded to get a self-consistent treatment of all relevant energy losses influencing the final synchrotron spectrum.

5 pages, 6 figures, 1 table; submitted to ASTRA Proceedings (AP)

References in corpus (4)

• The spatial energy spectrum of magnetic fields in our Galaxy
• Cosmic Ray Electrons, Positrons and the Synchrotron emission of the Galaxy: consistent analysis and implications
• A common solution to the cosmic ray anisotropy and gradient problems
• PAMELA and AMS-02 positron and electron spectra are reproduced by three-dimensional cosmic-ray modeling

Cited by in corpus (4)

• Low energy cosmic rays
• Practical Modeling of Large-Scale Galactic Magnetic Fields: Status and Prospects
• Supernova Remnant-Cosmic Ray connection: a modern view
• Radio signals from early direct collapse black holes