Download or read book Discovery and Characterization of the Binary System LSI 61 303 in Very High Energy Gamma rays with MAGIC written by Núria Sidro Martín and published by . This book was released on 2008 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Detailed Study of the Binary System LS I 61 303 in VHE Gamma rays with the MAGIC Telescope written by Tobias Jogler and published by . This book was released on 2009 with total page 231 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Very High Energy Gamma Rays from Binary Systems written by Hugh John Dickinson and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents a study of the very high energy (VHE) gamma-ray emission from X-ray binary systems using the H.E.S.S. imaging atmospheric Cherenkov array. The historical background and basic principles of ground-based gamma-ray astronomy are briefly reviewed and an overview of the design and capabilities of the H.E.S.S. telescope system is presented. The broadband observational properties of X-ray binary systems and their relevance in a broader astrophysical context is also discussed. A review of the radiative emission mechanisms which relate to VHE gamma-ray emission in X-ray binaries is presented, with emphasis given to the leptonic emission processes of synchrotron radiation and inverse-Compton scattering. Intrinsic absorption processes which act to attenuate the emitted flux of VHE gamma-rays are also discussed. Three computer models are introduced which simulate aspects of the gamma-ray emission and absorption in X-ray binary systems. A detailed analysis of the VHE gamma-ray emission from the X-ray binary LS 5039 is presented and the relevant procedures for data selection, gamma-hadron separation and background estimation are discussed in some detail. Methods for the determination of detection significance and the calculation of gamma-ray fluxes are also reviewed and results are derived which apply specifically to LS 5039. A detailed temporal analysis of the gamma-ray signal from LS 5039 is presented, applying tests for secular, excess and periodic variability. Strong evidence is found for modulation of the observed gamma-ray flux on the orbital period of ~3.9 days. Following a brief discussion of the procedures required for spectral analysis of VHE gamma-ray data, results are presented for LS 5039 which reveal evidence for spectral variability which is correlated with the observed gamma-ray flux and therefore, the orbital phase of the binary system. The spectral and temporal characteristics of LS 5039 are then compared with the predictions of theoretical models in an attempt to explain the observed behaviour. Contemporaneous X-ray and VHE gamma-ray observations of three galactic microquasars using the Rossi X-ray Timing Explorer and H.E.S.S. are presented. Although no gamma-ray detections are reported, the observations permit the derivation of upper limits to the VHE gamma-ray flux which correspond to episodes of known X-ray behaviour. The X-ray characteristics of each target are compared with pre-existing observational data to infer the presence or otherwise of relativistic outflows at the H.E.S.S. observation epochs. The implications of the gamma-ray non-detections are then discussed in the context of these inferred system properties. The results of a survey of the VHE gamma-ray emission associated with the positions of 125 known X-ray binaries are presented. Although no conclusive detections were obtained, tentative indications were found for a population of faint, spectrally hard gamma-ray sources associated with high-mass X-ray binary systems. The inferred characteristics of the indicated population show broad agreement with the measured properties of known gamma-ray-emitting X-ray binary systems like LS 5039.
Download or read book Multi year Campaign of the Gamma ray Binary LS I 61o 303 and Search for VHE Emission from Gamma ray Binary Candidates with the MAGIC Telescopes written by Alicia López Oramas and published by . This book was released on 2014 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Discovery and Characterization of the First Low Peaked and Intermediate Peaked BL Lacertae Objects in the Very High Energy Gamma Ray Regime written by Karsten Berger and published by . This book was released on 2009 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Discovery of Very High Energy Gamma ray Emission from 3C 279 and 3C 66A B with the MAGIC Telescope written by Manel Errando Trias and published by . This book was released on 2009 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Discovery and Characterization of the First Low Peaked and Intermediate Peaked BL Lacertae Objects in the Very High Energy gamma ray gamma ray Regime written by Karsten Berger and published by . This book was released on 2009 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Search for Ultra High Energy Gamma Ray Emission from Binary X ray Systems written by Philip Gregory Edwards and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Detection of Very High Energy Gamma Rays from the Binary X ray Source Hercules X 1 written by Robert J. Williams and published by . This book was released on 1986 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Study of the Binary Radio Star LSI 61 303 written by Huangjian Xu and published by . This book was released on 1987 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Study of Extragalactic Very High Energy Gamma Ray Sources written by and published by . This book was released on 2013 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Observation of Galactic Sources of Very High Energy Gamma rays with the MAGIC Telescope written by Hendrik Bartko and published by . This book was released on 2006 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physical Processes Behind the Periodic Radio and Gamma ray Emission from the X ray Binary LS I 61 303 written by Frédéric Felix Daniel Jaron and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Observation of Very High Energy Gamma rays from Blazars with the MAGIC Telescope written by Masaaki Hayashida and published by . This book was released on 2008 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Very High Energy Gamma Rays from the Binary Pulsar PSR B1259 63 written by Stefan Schlenker and published by . This book was released on 2005 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A New Population of Very High energy Gamma ray Sources Detected with H E S S in the Inner Part of the Milky Way written by Stefan Funk and published by . This book was released on 2005 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Very High Energy Blazar Astrophysics written by Robert Marcus Wagner and published by . This book was released on 2007 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt:
