Investigation on the effectiveness of VHE gamma-ray astronomy techniques based on imaging of Cerenkov light flashes

Details Investigation on the effectiveness of VHE gamma-ray astronomy techniques based on imaging of Cerenkov light flashes Investigation on the effectiveness of VHE gamma-ray astronomy techniques based on imaging of Cerenkov light flashes

Feb 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985ncimc...8...39p&link_type=abstract

Nuovo Cimento C, Serie 1 (ISSN 0390-5551), vol. 8 C, Jan.-Feb. 1985, p. 39-54.

Astronomy and Astrophysics

Astronomy

13

Cerenkov Counters, Cosmic Ray Showers, Gamma Ray Astronomy, Gamma Ray Telescopes, High Energy Interactions, Monte Carlo Method, Background Radiation, Imaging Techniques, Light (Visible Radiation), Radiation Distribution, Signal Detection, Signal To Noise Ratios

Scientific paper

A high-velocity Monte Carlo method is applied to very-high-energy gamma-ray astronomy techniques. The discrimination effectiveness against the cosmic-ray background is investigated for the technique based on the two-dimensional imaging of the Cerenkov light flashes created by the extensive air showers in the atmosphere. It is shown that previously proposed discrimintion methods using the difference in the Cerenkov light flash shape of gamma-rays- and background-induced showers have low effectiveness. Two new discrimination methods are proposed, based on the difference in the orientation of Cerenkov light spot and fluctuations of the light density. The combination of these methods makes it possible to increase the signal/noise ratio by 4-5 times.

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