Crystal-based intensive gamma-ray light sources

Scintillators Photomultipliers Crystal Scintillators Photomultipliers Gamma Ray Gamma Ray Scattered : Light Emitted Gamma Ray Absorbed : Light Emitted

Tev Gamma - Ray Sources ?

In this paper, we identify Cen A and M87, two nearby Fanaroff-Riley I (FRI) radio galaxies, with high-energy-peaked BL Lac-like (HBL-like) objects by investigating their spectral energy distributions (SEDs). The SED peak of Cen A at ∼150 keV, which was generally believed to be the peak of inverseCompton emission as in the case of 3C 273, is found to be actually the peak of synchrotron emission....

Extragalactic Gamma-ray Sources

This chapter provides a review of γ-ray sources lying at high Galactic latitudes. Their statistical properties and variability status, as well as studies involving cross correlations with lower frequency catalogs and multiwavelength observations, are summarized. The case for active galactic nuclei is analyzed with special emphasis, since they represent the largest population of high energy sour...

Ray-Based Rendering for Virtual Light Sources

The ray-based approach is powerful and useful for the description of 3-D images because of its neutrality to all types of 3-D displaying technologies. This approach has been developed in order to reproduce the whole visual data captured at the transmitter. However, for the purpose of augmented reality, not only is the reproduction of real visual data essential, but also the synthesis of virtual...

Microquasars and gamma-ray sources

Microquasars are X-ray binary systems with non-thermal radio emission originated in jet-like features. They are attractive sites for gamma-ray production, since relativistic particles in the jet should traverse locally strong both photon and matter fields. In this review we discuss whether some of the unidentified gammaray sources detected by the EGRET instrument of the Compton Gamma-Ray Observ...