Evidence for 500 TeV gamma-ray emission from Hercules X-1

Details Evidence for 500 TeV gamma-ray emission from Hercules X-1 Evidence for 500 TeV gamma-ray emission from Hercules X-1

Jun 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...293l..69b&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 293, June 15, 1985, p. L69-L72.

Astronomy and Astrophysics

Astronomy

53

Gamma Ray Astronomy, Pulsars, X Ray Binaries, X Ray Sources, Accretion Disks, Charged Particles, Emission Spectra, High Energy Interactions

Scientific paper

A signal (chance probability = 2×10-4) with a 1.24 s period has been observed from the direction of Hercules X-1. The signal's relatively long period and high shower energy conflict with some popular models of particle acceleration by pulsars. Optical and X-ray data support a picture in which energetic particles produce multi-TeV γ-rays by collisions with Hercules X-1's accretion disk.

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