Observational signatures of existence of antimatter objects in the Galaxy are discussed. We focus on point-like sources of gamma radiation, diffuse galactic gamma ray background and anti-nuclei in cosmic rays.

This paper presents a CMOS current-mode S-shape correction circuit. The S-shape correction function is proposed to suit for panel-to-panel LCD displays by selecting a fractional value. Simulated results are at 1.8V supply voltage for 0.35μm CMOS process. Image quality improvement due to S-shape correction is observed. The -3dB bandwidth are about 50 MHz for the proposed circuit. Key-Words: LCD,...

In fast phase-measuring profilometry, phase error caused by gamma distortion is the dominant error source. Previous phase-error compensation or gamma correction methods require the projector to be focused for best performance. However, in practice, as digital projectors are built with large apertures, they cannot project ideal focused fringe images. In this Letter, a thorough theoretical model ...

This paper represents a step toward constraining galaxy formation models via TeV gamma ray observations. We use semi-analytic models of galaxy formation to predict a spectral distribution for the intergalactic infrared photon eld, which in turn yields information about the absorption of TeV gamma rays from extra-galactic sources. By making predictions for integral ux observations at >200 GeV fo...

We study the influence of jet structure on the curvature effect in a GRB-lightcurve. Using a simple model of jet emissivity, we numerically calculate lightcurves for a short flash from a relativistic outflow having various profiles of the Lorentz factor and outflowing energy density (gaussian, core+powerlaw). We find that for “on-beam” viewing geometry, with the line of sight passing through th...

Organic Light Emitting Diode (OLED) displays have matured into current smartphones. How to prolong the lifetime of displays while preserving the display quality becomes a primary issue. In this paper, we propose a low image distortion constrained power-saving approach for OLED displays based on gamma correction and saturation scaling. We first investigate the impact of gamma correction and satu...

The aim of the study was to evaluate the effects of gamma irradiation and vacuum packaging as combined process for improvement of ostrich meat shelf life. Ostrich meat was vacuum-packaged and irradiated at 0, 1 and 3.0 kGy. Bacterial growth and sensory quality were determined at 1, 7, 14 and 21 days. Microbial analysis indicated that the combined use of vacuum packaging and irradiation had a si...

Most Galactic point sources of gamma rays remain unidentiÐed. The few (extrasolar) sources that have been identiÐed are all young, rotation-powered pulsars, all but one of which were identiÐed using radio ephemerides. The radio-quiet Geminga pulsar was identiÐed only after pulsations were discovered in a coincident X-ray source. Observational evidence indicates that many of the unidentiÐed Gala...

We calculate limits on the properties of neutrinos using data from gammaray detectors on the Pioneer Venus Orbiter and Solar Max Mission satellites. A massive neutrino decaying in flight from the supernova would produce gamma rays detectable by these instruments. The lack of such a signal allows us to constrain the mass, radiative lifetime, and branching ratio to photons of a massive neutrino s...