Survey of ultra-high-energy gamma-ray emission in the Magellanic Clouds

Details Survey of ultra-high-energy gamma-ray emission in the Magellanic Clouds Survey of ultra-high-energy gamma-ray emission in the Magellanic Clouds

Jan 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...403..239a&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 403, no. 1, p. 239-248.

Astronomy and Astrophysics

Astronomy

6

Emission Spectra, Gamma Ray Astronomy, Magellanic Clouds, Sky Surveys (Astronomy), Supernova Remnants, X Ray Binaries, Angular Resolution, Neutron Stars, Telescopes

Scientific paper

The Cerenkov technique at large zenith angles with the JANZOS facility was used to monitor various objects in the Magellanic Clouds for UHE gamma-ray emission during 1988 and 1990. No clear evidence was found for persistent UHE emission from SN 1987A and selected X-ray pulsars in the Magellanic Clouds. Upper limits on the UHE fluxes above the given threshold energies were obtained. No statistically significant evidence for pulsed UHE emission was found for the X-ray binary systems SMC X-1 and LMC X-4. The data base was examined for evidence of previously undetected UHE sources in the Magellanic Clouds; no significant DC excesses were found. Upper limits on the UHE gamma-ray emission from these galaxies as a whole were obtained.

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