RICAP'07 - Roma International Conference on Astroparticle Physics

Session

Parallel Session: Gamma Detection

21 Jun 2007, 11:30

University of Roma "La Sapienza"

35. Diffuse Gamma Emission of the Galaxy from Cosmic Rays

Dario Grasso (INFN, Pisa, Italy)

21/06/2007, 11:30

Gamma-rays from pion decay provide a unique tool to probe galactic cosmic rays (CR) and their interaction with the interstellar medium. At the same time, if not well understood, such an emission may be an annoying background for dark matter searching. Therefore, it is necessary to model it as better as possible. We do that by combining new simulations of the CR propagation with recent...

36. The H.E.S.S. view of the Galactic Centre region

Christopher van Eldik (MPI for Nuclear Physics, Germany)

21/06/2007, 11:45

The detection of TeV gamma-rays from the direction of the Galactic Centre is one of the most exciting discoveries in recent years. Observations by the H.E.S.S. system of imaging atmospheric Cherenkov telescopes provide the most precise available data on this region in the energy range 150 GeV - 30 TeV. Gamma-rays produced in interactions of energetic particles with ambient material, magnetic...

37. H.E.S.S. observations of Active Galactic Nuclei

Francesca Volpe (Ecole Polytechnique, France)

21/06/2007, 12:00

The array of four imaging atmospheric-Cherenkov telescopes HESS has been operating in Namibia since 2003 and during this time it has observed a selected sample of extragalactic gamma-ray emitters in the Very High Energy domain. All the detected sources are Active Galactic Nuclei and almost all belong to class of BL Lac objects. The high sensitivity of HESS allows the detection of faint sources...

38. MAGIC observations of the HMXB LS I +61 303 in VHE gamma rays

Tobias Jogler (Max Planck Institut für Physik, Germany)

21/06/2007, 12:15

MAGIC is currently the largest Imaging Atmospheric Cherenkov Telescope (IACT) of the world and is located at the Canary Island La Palma. Recent observations performed by this high sensitivity instrument discovered the High Mass X-ray Binary (HMXB) LS I +61 303 at VHE gamma rays. The emission from LS I +61 303 was found to be variable, and the source was visible above 100~GeV energies at...

39. TenTen: A new array of Cherenkov Telescopes for multi-TeV Gamma-Ray Astronomy

Gavin Rowell (University of Adelaide, Australia)

21/06/2007, 12:30

The exciting results from H.E.S.S. point to a new population of gamma-ray sources at energies above 10 TeV, paving the way for future studies and new discoveries in this energy range. Connected with these energies is the origin of particle acceleration to PeV energies and the study of multi-TeV gammaray production in agrowing number of astrophysical environments. TenTen is a proposed...