Spectral signatures of the MeV-PeV radiation from accreting neutron stars

B. Rudak, P. Mészáros

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


We discuss the formation of the high-energy gamma-ray and neutrino spectrum produced by the injection of a power-law proton distribution extending up to Ep ∼ 1016 eV in the magnetosphere of accreting neutron stars. The resulting proton spectrum is calculated in the presence of advection and cooling by interactions with the X-ray spectrum of the neutron star, leading to several components of a secondary photon spectrum extending from the MeV to the PeV range, and a neutrino spectrum extending from about 0.1 TeV to 0.1 PeV. The shapes of the resulting high-energy secondary spectra depend sensitively on the accreting source's X-ray spectrum and energy density as well as the magnetic field strength involved. Detailed spectra are calculated for the specific examples of Her X-1 and Cyg X-3.

Original languageEnglish (US)
Pages (from-to)269-279
Number of pages11
JournalAstrophysical Journal
Issue number1
StatePublished - Dec 10 1991

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


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