Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986natur.323..422g&link_type=abstract
Nature (ISSN 0028-0836), vol. 323, Oct. 2, 1986, p. 422-424. DOE-supported research.
Astronomy and Astrophysics
Astronomy
16
Beams (Radiation), Eclipsing Binary Stars, Gamma Ray Astronomy, Pulsars, Stellar Magnetic Fields, X Ray Binaries, Companion Stars, Energetic Particles, Hercules Nova, Magnetic Dipoles, Neutrinos, Protons
Scientific paper
A recent model for the 1011 - 1015eV γ-ray emission from the 1.24 s X-ray pulsar Hercules X-1 postulates coherent charged particle beams as the photon source, through a cascade process in intervening matter in the binary system HZ Her/Her X-1. This interpretation is complicated by a 1985 observation of ≡1012eV γ-ray pulsations during at least the first hour of the X-ray eclipse of Her X-1 by HZ Her, which would completely absorb a particle (or photon) beam propagating along or near the line of sight to Her X-1. Here the authors show that the presence of even a weak dipole magnetic field around the companion star is sufficient to steer such a beam to a suitable target region for producing the observed γ-rays.
Gorham Peter. W.
Learned John G.
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