Author: Michael Anthony CatanesePublisher:
ISBN:
Category :
Languages : en
Pages : 606
Book Description
A Search for Ultra-high Energy Gamma Rays from Active Galactic Nuclei
Author: Michael Anthony CatanesePublisher:
ISBN:
Category :
Languages : en
Pages : 606
Book Description
Gamma-ray Large Area Space Telescope
Author: Search for Emission of Ultra High Energy Radiation from Active Galactic Nuclei
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 5
Book Description
A search for emission of ultra-high energy gamma radiation from 13 active galactic nuclei that were detected by EGRET, using the CYGNUS extensive air-shower array, is described. The data set has been searched for continuous emission, emission on the time scale of one week, and for on the time scale of out day. No evidence for emission from any of the AGN on any of the time scales examined was found. The 90% C.L. upper limit to the continuous flux from Mrk 421 above 50 TeV is 7.5 [times] 10[sup [minus]14] cm[sup [minus]2]s[sup [minus]1].
Very High Energy Phenomena in the Universe
Author: Yannick Giraud-HéraudPublisher: Atlantica Séguier Frontières
ISBN: 9782863322178
Category : Electroweak interactions
Languages : en
Pages : 488
Book Description
Very High Energy Gamma-Ray Emission from Active Galactic Nuclei
Author: Wai-Ying MakPublisher:
ISBN: 9781374703070
Category :
Languages : en
Pages :
Book Description
Very High Energy Cosmic Gamma Radiation
Author: Felix A. AharonianPublisher: World Scientific
ISBN: 9789812561732
Category : Science
Languages : en
Pages : 516
Book Description
Gamma ray astronomy, the branch of high energy astrophysics that studies the sky in energetic ?-ray photons, is destined to play a crucial role in the exploration of nonthermal phenomena in the Universe in their most extreme and violent forms. The great potential of this discipline offers impressive coverage of many OC hot topicsOCO of modern astrophysics and cosmology, such as the origin of galactic and extragalactic cosmic rays, particle acceleration and radiation processes under extreme astrophysical conditions, and the search for dark matter."
Very High Energy Gamma-Ray Astronomy
Author: T.C. WeekesPublisher: CRC Press
ISBN: 1420033190
Category : Science
Languages : en
Pages : 234
Book Description
High energy gamma-ray photons are the prime probes of the relativistic or high-energy universe, populated by black holes, neutron stars, supernovae, quasars, and matter-antimatter annihilations. Through studying the gamma-ray sky, astrophysicists are able to better understand the formation and behavior of these exotic and energetic bodies. V
Very High Energy Gamma-ray Emission from Active Galactic Nuclei
Author: Wai-ying MakPublisher:
ISBN:
Category : Active galactic nuclei
Languages : en
Pages : 226
Book Description
TeV Gamma-Ray Astrophysics
Author: Heinrich J. VölkPublisher: Springer Science & Business Media
ISBN: 9400901712
Category : Science
Languages : en
Pages : 447
Book Description
The `International Heidelberg Workshop on TeV Gamma-Ray Astrophysics' brought together astrophysicists from the various fields which play a role in the formation of high energy gamma-ray emission. In particular, theoretical and observational aspects of the physics and astrophysics of pulsars and quasars, the acceleration of particles at Supernova Remnants and other strong astrophysical shock fronts, and cascade processes in universal background photon fields were comprehensively discussed in more than thirty reviews by leading experts. In their entirety these reviews describe the birth of a new field of astronomy. This field concerns cosmic gamma-rays of very high energy which are observed with ground-based optical telescopes due to the Cherenkov emission of the secondary particles created by the interaction of these gamma-rays with atoms in the Earth's atmosphere. Beyond that, the workshop encompassed the latest developments and trends in theory and observation of cosmic gamma-ray sources of all energies, from nuclear gamma-ray lines in the MeV-region, through the Bremsstrahlung, Inverse Compton, and pion decay continuum emission, to gamma-rays due the decay of exotic relics from the early Universe. Audience: Specialists as well as students in physics and astrophysics and young research workers.
The Gamma Ray Sky with Compton GRO and SIGMA
Author: M. SignorePublisher: Springer Science & Business Media
ISBN: 9401100675
Category : Science
Languages : en
Pages : 422
Book Description
This volume consists of invited lectures and seminars presented at the NATO Advanced Study Institute "The Gamma Ray Sky with COMPTON GRO and SIGMA" , which was held at the Centre de Physique Theorique of Les Houches (France) in January / February 1994. The school has been planned by a Scientific Organizing Committee. It was organized with the aim of providing students and young researchers with an up-to-date account of the high-energy phenomena in the vicinity of compact objets and the diffuse gamma-ray backgrounds after the early results from the gamma-ray telescope SIGMA and the four instruments onboard COMPTON GRO (Gamma Ray Observatory) : BATSE (Burst and Transient Source Experiment),COMPTEL(Compto'l Telescope),EGRET (Energetic Gamma Ray Experiment Telescope) and OS SE(Oriented Scintillation Spectrometer Experiment) . It was attended by more than sixty researchers from many countries. The lectures and seminars represent a complete coverage of our present knowledge and understanding of: Gamma-ray backgrounds, Gamma-ray Burts,Active Galactic Nuclei,Galactic Compact Objects, Gamma-ray Spectroscopy, Instrumentation and observation techniques, etc ... Most of these lectures are reproduced in this volume. Unfortunately, a few lecturers have chosen not to submit their manuscript.