Conveners
Gamma Ray Astronomy
- Johannes Knapp (DESY Zeuthen)
Gamma Ray Astronomy
- Felix Aharonian (Dublin Institute for Advanced Studies)
Gamma Ray Astronomy
- Johannes Knapp (DESY Zeuthen)
Gamma Ray Astronomy
- Felix Aharonian (Dublin Institute for Advanced Studies)
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Felix Aharonian (DIAS and MPIK)04/07/2016, 14:30The key role of high energy gamma-ray observations is described in the context of the origin of galactic and extragalactic cosmic rays. The achievements of recent years regarding both the experimental and theoretical activities are highlighted, and the prospects of the field are discussed.Go to contribution page
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Francesca Romana Spada (PI)04/07/2016, 15:20The Fermi mission is operating in low Earth orbit since June 2008, and has collected more than one billion photons from the whole sky in the 100 MeV - 100 GeV band. Thanks to the large acceptance of the Large Area Telescope, a pair-conversion telescope for high-energy electromagnetic radiation, Fermi also provided the largest high-energy cosmic-ray electron sample to date, with about 10k...Go to contribution page
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Dario Grasso (PI)04/07/2016, 15:50Several independent analyzes of Fermi-LAT results found evidences of a spatial dependence of the cosmic ray (CR) proton spectral index which is not accounted for in conventional models of CR transport in the Galaxy. Moreover, several CR experiments have established the presence of a CR spectral hardening above few hundred GeV. We show that these results may have a relevant impact on the...Go to contribution page
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Leonardo Di Venere (BA)04/07/2016, 16:10In about eight years of data taking, the Large Area Telescope (LAT) onboard the Fermi satellite proved to be an excellent instrument to detect and observe Supernova Remnants (SNRs) in the gamma ray energy band, from one hundred MeV to a few hundred GeV. This energy range is crucial to provide information on the physical processes occurring at the source, which involve both accelerated leptons...Go to contribution page
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Alessandro De Angelis (INFN)04/07/2016, 17:00The present generation of Imaging Air Cherenkov Telescopes (IACTs) has greatly improved our knowledge on the Very High Energy side of the Universe. The MAGIC IACTs operate in stereoscopic configuration since 2009 in La Palma, Canary Islands. This talk will present a few of MAGIC latest and most relevant results, in particular related to the physics of extragalactic objects and...Go to contribution page
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Dr Johannes Knapp (DESY Zeuthen)04/07/2016, 17:30The Cherenkov Telescope Array (CTA) will be the global, next-generation instrument for high-energy gamma-ray astronomy, with unprecedented performance in every respect. It will be an observatory with telescopes in the South and North, and will gradually become an open observatory. CTA is rapidly approaching its realisation. Construction of pre-production telescopes has commenced and data...Go to contribution page
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Dr Markus Garczarczyk (DESY)04/07/2016, 18:00The Cherenkov Telescope Array (CTA), is an international project for the next generation ground-based observatory for gamma-ray astronomy in the energy range from 20 GeV to 300 TeV. The sensitivity in the core energy range will be dominated by up to 40 Medium Size Telescopes (MSTs) distributed over the northern and southern observatory sites. The MST has a modified Davies-Cotton reflector...Go to contribution page
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Nepomuk Otte (Georgia Institute of Technology)05/07/2016, 09:00VERITAS is an array of four 12-m imaging Cherenkov telescopes, sensitive to very-high energy (VHE; >100 GeV) gamma-ray photons. The science program of VERITAS includes the characterization of the VHE gamma-ray sky, the study of cosmic ray accelerators (both within and outside of the Galaxy), and other topics in astrophysics, cosmology and fundamental physics. Collaboration with...Go to contribution page
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Prof. Miguel Mostafa (Penn State Univ.)05/07/2016, 09:30The High Altitude Water Cherenkov (HAWC) experiment is a large field of view, continuously operated TeV gamma ray observatory located at 4,100 meters above sea level inside the Pico de Orizaba national park in Mexico. It consists of an array of 300 water Cherenkov detectors densely-spaced over an area of 22,000 square meters. The high altitude, the large active area, and the optical isolation...Go to contribution page
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Aldo Morselli (ROMA2)05/07/2016, 10:00Detection of gamma rays and cosmic rays from the annihilation or decay of dark matter particles is a promising method for identifying dark matter, understanding its intrinsic properties, and mapping its distribution in the universe. I will review recent results from the Fermi Gamma-ray Space Telescope and other space-based experiments, and highlight the constraints these currently place on...Go to contribution page
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Dr Gerd Puehlhofer (IAAT, University of Tuebingen)05/07/2016, 11:00The High Energy Stereoscopic System (H.E.S.S.) collaboration runs a system of meanwhile five Imaging Air Cherenkov Telescopes in the Khomas Highlands of Namibia. Observations of the sky in the photon energy range between below 100 GeV and ~100 TeV have revealed a large number of objects that are capable of efficiently accelerating particles to TeV energies. In this contribution, recent...Go to contribution page
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Pierre Brun (CEA Saclay)05/07/2016, 11:30Gamma-ray astronomy is a powerful mean of studying particle physics and cosmology independently of particle colliders and more conventional observatories. In a 50 GeV-50 TeV range, observations of Galactic and extragalactic high-energy sources allow to efficiently search for new particles such as dark matter particles and axions; they probe the UV to infrared backgrounds of the universe whose...Go to contribution page
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Dr Francois Brun (CENBG, CNRS/IN2P3, Bordeaux, France)05/07/2016, 11:50The supernova remnant (SNR) W49B originated from a core-collapse supernova that occurred between one and four thousand years ago, and subsequently evolved into a mixed-morphology remnant, which is interacting with molecular clouds (MC). SNR/MC associations are particularly interesting for probing the acceleration of hadrons in SNRs and consequently the origin of Galactic cosmic rays. The...Go to contribution page
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Nicola Giglietto (Politecnico di BARI e INFN - BARI), Silvia Rainò (Università e INFN-BARI)05/07/2016, 12:10The high energy gamma-ray emission from the Sun is due to the interactions of cosmic ray (CR) protons and electrons with matter and photons in the solar environment. Such interactions lead to two component gamma-ray emission: a disk-like emission due to the nuclear interactions of CR protons and nuclei in the solar atmosphere and a space extended emission due to the inverse Compton (IC)...Go to contribution page