Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...339..629h&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 339, April 15, 1989, p. 629-631.
Astronomy and Astrophysics
Astronomy
8
Gamma Ray Astronomy, Intergalactic Media, Magnetic Fields, Relic Radiation, Energy Spectra, Field Strength, Milky Way Galaxy, Monte Carlo Method, X Ray Sources
Scientific paper
The possibility of measuring the intergalactic magnetic field between an extragalactic ultrahigh-energy (UHE) gamma-ray source and the Galaxy is considered. It is found that, if there is a strong UHE gamma-ray source at a distance of less than about 100 kpc, the magnetic field between the Galaxy and the source can be studied by UHE gamma-ray observations. If the field strength is less than 10 to the -12th G, the gamma-ray flux for E(gamma) greater than or equal to 10 to the 15th is enhanced about 10 times over that expected from the source energy spectrum and the absorption with the 3 K microwave background photons alone.
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