Ground-based very high energy gamma ray astronomy: Observational highlights

Details Ground-based very high energy gamma ray astronomy: Observational highlights Ground-based very high energy gamma ray astronomy: Observational highlights

Feb 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986icrc....9..399t&link_type=abstract

In NASA. Goddard Space Flight Center Nineteenth International Cosmic Ray Conference. Conference Papers: Invited Rapporteur, High

Astronomy and Astrophysics

Astronomy

Cerenkov Radiation, Energy Distribution, Gamma Ray Astronomy, Gamma Rays, Radio Bursts, X Ray Binaries, Luminosity, Periodic Variations, Pulsars

Scientific paper

It is now more than 20 years since the first ground based gamma ray experiments involving atmospheric Cerenkov radiation were undertaken. The present highlights in observational ground-based very high energy (VHE) gamma ray astronomy and the optimism about an interesting future for the field follow progress in these areas: (1) the detection at increased levels of confidence of an enlarged number of sources so that at present claims were made for the detection, at the 4 to 5 sd level of significance, of 8 point sources; (2) the replication of the claimed detections with, for the first time, confirmation of the nature and detail of the emission; and (3) the extension of gamma ray astronomy to the ultra high energy (UHE) domain. The pattern, if any, to emerge from the list of sources claimed so far is that X-ray binary sources appear to be copious emitters of gamma rays over at least 4 decades of energy. These X-ray sources which behave as VHE and UHE gamma ray emitters are examined.

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