Cosmic-ray proton to electron ratios

Massimo Persic, Yoel Rephaeli

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

Abstract

A basic quantity in the characterization of relativistic particles is the proton-to-electron (p/e) energy density ratio. We derive a simple approximate expression suitable to estimate this quantity, Up/Ue = (mp/me)(3−q)/2, valid when a nonthermal ‘gas’ of these particles is electrically neutral and the particles’ power-law spectral indices are equal – e.g., at injection. This relation partners the well-known p/e number density ratio at 1 GeV, Np/Ne = (mp/me)(q−1)/2.

Original languageEnglish
Title of host publicationOn Recent Developments in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories
EditorsRobert T. Jantzen, Kjell Rosquist, Remo Ruffini, Remo Ruffini
PublisherWorld Scientific
Pages1036-1038
Number of pages3
ISBN (Print)9789814612142
DOIs
StatePublished - 2015
Event13th Marcel Grossmann Meeting on Recent Developments in Theoretical and Experimental General Relativity, Gravitation, and Relativistic Field Theories, MG13 2012 - Stockholm, Sweden
Duration: 1 Jul 20157 Jul 2015

Publication series

NameThe 13th Marcel Grossmann Meeting: On Recent Developments in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories - Proceedings of the MG13 Meeting on General Relativity, 2012
Volume0

Conference

Conference13th Marcel Grossmann Meeting on Recent Developments in Theoretical and Experimental General Relativity, Gravitation, and Relativistic Field Theories, MG13 2012
Country/TerritorySweden
CityStockholm
Period1/07/157/07/15

Keywords

  • Cosmic rays
  • Energy ratios

Fingerprint

Dive into the research topics of 'Cosmic-ray proton to electron ratios'. Together they form a unique fingerprint.

Cite this