Search for TeV gamma rays from extragalactic sources and the Galactic Center

Details Search for TeV gamma rays from extragalactic sources and the Galactic Center Search for TeV gamma rays from extragalactic sources and the Galactic Center

Aug 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985icrc....1..263b&link_type=abstract

In NASA. Goddard Space Flight Center 19th Intern. Cosmic Ray Conf., Vol. 1 p 263 (SEE N85-33902 22-93)

Computer Science

Cerenkov Radiation, Extragalactic Radio Sources, Galactic Nuclei, Gamma Rays, Angular Resolution, Energy Spectra, Zenith

Scientific paper

The Ooty atmospheric Cerenkov array was used in 1982-83 to see if the galactic center and the extra-galactic sources 3C 273, Centaurus A emit gamma rays at TeV energies. The ON/OFF method was used wherein the source was tracked for 16 minutes and immediately afterwards, a background region in the same zenith angle range was tracked for the next 16 minutes. Data were taken for approx 15 hours (55 scans) on 3C273, approx 7 hours (26 scans) on Cen A and 5 hours (19 scans) on galactic center. A preliminary analysis involving direct comparison of total rates on and off the source shows no significant excess from any of these orbits. Results of detailed analysis using different energy thresholds are presented.

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