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Instruments of RT-2 Experiment onboard CORONASPHOTON and their test and evaluation IV: Background Simulations using GEANT-4 Toolkit
Radiation detectors X- and gamma-ray telescopes and instrumentation
2010/11/16
Hard X-ray detectors in space are prone to background signals due to the ubiquitous cosmic rays and cosmic diffuse background radiation that continuously bom-bards the satellites which carry the detec...
Statistical mechanics of collisionless orbits. III. Comparison with N-body simulations
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/23
We compare the DARKexp differential energy distribution, N(E) \propto \exp(\phi_0-E)-1, obtained from statistical mechanical considerations, to the results of N-body simulations of dark matter halos.
A bias in cosmic shear from galaxy selection: results from ray-tracing simulations
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/22
We identify and study a previously unknown systematic effect on cosmic shear measurements, caused by the selection of galaxies used for shape measurement, in particular the rejection of close (blended...