Teraelectronvolt observations of the BL Lac object in 2004

Fidelis, V. V.; Eliseev, V. S.; Jogolev, N. A.; Nehay, E. M.; Neshpor, Yu. I.; Skiruta, Z. N.

doi:10.1080/10556790500142503

Cited by 2 publications

(1 citation statement)

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“…Gamma-rays with energies of about 100 TeV and more, entering the earth atmosphere, produce Extensive Air Shower (EAS) events which could be observed by the detection of the secondary particles of the EAS events on the ground level [6]. This gamma-ray induced EAS events are investigated for diffuse Galactic [7] and extragalactic sources, also Galactic [8], [9] and extragalactic [10] gamma-ray point sources have been investigated too. In this work we have investigated 10 of these point sources.…”

Section: Introductionmentioning

confidence: 99%

Observation of EGRET gamma-ray sources by an Extensive Air Shower experiment

Ghomi

Bahmanabadi

Samimi

2005

A&A

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Abstract. Ultra-high-energy (E > 100 TeV) Extensive Air Showers (EASs) have been monitored for a period of five years (1997)(1998)(1999)(2000)(2001)(2002)(2003), using a small array of scintillator detectors in Tehran, Iran. The data have been analyzed taking into account the dependence of source counts on zenith angle. During a calendar year different sources come into the field of view of the detector at varying zenith angles. Because of varying thickness of the overlaying atmosphere, the shower count rate is extremely dependent on zenith angle, which has been carefully analyzed over time (Bahmanabadi et al. 2002, Exp. Astron., 13, 39). High energy gamma-ray sources from the EGRET third catalogue where observed and the data were analyzed using an excess method. Upper limits were obtained for a number of EGRET sources, including 6 AGNs or probably AGNs and 4 unidentified sources.

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Section: Introductionmentioning

confidence: 99%