500 TeV gamma rays from Hercules X-1

Details 500 TeV gamma rays from Hercules X-1 500 TeV gamma rays from Hercules X-1

Aug 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985icrc....1..111b&link_type=abstract

In NASA. Goddard Space Flight Center 19th Intern. Cosmic Ray Conf., Vol. 1 p 111-114 (SEE N85-33902 22-93)

Astronomy and Astrophysics

Astronomy

Accretion Disks, Cosmic Ray Showers, Gamma Ray Bursts, Neutron Stars, Particle Acceleration, Pulsars, X Ray Binaries, Cerenkov Radiation, Mirrors, Photomultiplier Tubes, X Ray Astronomy

Scientific paper

A signal (chance probability = 2×10-4) with the 1.24 s period of Hercules X-1 has been observed using the Utah Fly's Eye. 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 suggest a picture in which energetic particles produce multi-TeV γ-rays by collisions with Hercules X-1's accretion disk.

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