In order to enable an iCal export link, your account needs to have an API key created. This key enables other applications to access data from within Indico even when you are neither using nor logged into the Indico system yourself with the link provided. Once created, you can manage your key at any time by going to 'My Profile' and looking under the tab entitled 'HTTP API'. Further information about HTTP API keys can be found in the Indico documentation.
Additionally to having an API key associated with your account, exporting private event information requires the usage of a persistent signature. This enables API URLs which do not expire after a few minutes so while the setting is active, anyone in possession of the link provided can access the information. Due to this, it is extremely important that you keep these links private and for your use only. If you think someone else may have acquired access to a link using this key in the future, you must immediately create a new key pair on the 'My Profile' page under the 'HTTP API' and update the iCalendar links afterwards.
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Permanent link for all public and protected information:
Fundamental physics with cosmic Gamma Rays, and the CTA experiment
Alessandro De Angelis
(Universita` di Udine - IST. Lisboa)
Aula Seminari (LNF INFN)
Via Enrico Fermi, 40
Gamma-ray astrophysics studies electromagnetic radiation of cosmic origin in the energy range above some 30 MeV and up to some 100 TeV. Observations in this energy band are performed: from space, by the Large Area Telescope onboard the Fermi satellite and from the AGILE detector; from Earth, mostly by the Imaging Air Cherenkov Telescopes MAGIC, H.E.S.S. and VERITAS, and by the extensive air shower detector HAWC. These instruments have discovered in the recent years different populations of gamma-ray emitters and studied in detail the non-thermal astrophysical processes producing high-energy radiation, in particular in correlation with the acceleration of cosmic rays. The scientific objectives of gamma-ray astrophysics include also questions related to fundamental physics. By observing the gamma-ray emission from sources at cosmological distances, we learn about the spectral intensity and evolution of the intergalactic background radiation, and perform tests of Lorentz Invariance and of vacuum energy. Moreover, we search for dark matter by looking for possible signatures in final states involving gamma rays or positrons. A new detector, CTA, is in construction, and it will outperform by at least one order of magnitude the present gamma-ray detectors.