simulation of gamma and hadron showers in the energy range 100gev- 25tev has been carried out. for a big ideal cherenkov light array, characteristics of lateral distribution of cherenkov photon density have been studied. results from this ideal detector are compared with those simulated for a real tunka- like array to investigate experimental potential of using existence of a hump in lateral di...

After a short historical introduction to the field of γ-ray line astronomy with radioactivities, I present an overview of recent results concerning the massive star yields of those radioactivities. I comment on the implications of those results (concerning long-lived radioactivities, like Al and Fe) for γ-ray line astronomy, in the light of past (COMPTEL and GRIS) and forthcoming (INTEGRAL) obs...

This article reviews the present status of high energy γ-ray astronomy at energies above 30 MeV. Observations in the past decade using both spaceand ground-based experiments have been primarily responsible for giving a tremendous boost to our knowledge of the high energy Universe. High energy γ-rays have been detected from a wide range of Galactic and extragalactic astrophysical sources, such a...

Following the detection of strong TeV γ-ray flares from the BL Lac object 1ES 1959+650 with the Whipple 10 m Cherenkov telescope on May 16 and 17, 2002, we performed intensive Target of Opportunity (ToO) radio, optical, X-ray and TeV γ-ray observations from May 18, 2002 to August 14, 2002. Observations with the X-ray telescope RXTE (Rossi X-ray Timing Explorer) and the Whipple and HEGRA (High E...

We review the iid2022 workshop on statistical methods for X-ray and γ -ray astronomy high–energy astrophysics event data in astronomy, held Guntersville, AL, Nov. 15–18 2022. New faint source detection, spatial point processes, variability spectral analysis, machine learning are discussed. Ideas future developments of advanced methodology shared.

This paper summarizes recents results in γ-ray astronomy, most of which were derived with data from groundbased γ-ray detectors. Many of the contributions presented at this conference involve multiwavelength studies which combine ground-based γ-ray measurements with optical data or space-based X-ray and γ-ray measurements. Besides measurements of the diffuse emission from the Galaxy, observatio...

The last half-century has seen dramatic developments in γ−ray telescopes, from their initial conception and development through to their blossoming into full maturity as a potent research tool in astronomy. Gamma-ray telescopes are leading research in diverse areas such as γ−ray bursts, blazars, Galactic transients, and the Galactic distribution of Al.