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For the proposed Cherenkov Telescope Array (CTA), a post-calibration point-source location accuracy of 3 seconds of arc is aimed for under favorable observing conditions and for gamma-ray energies exceeding 100 GeV. In this contribution,…

天体物理仪器与方法 · 物理学 2015-09-08 Stefan Eschbach , Alexander Ziegler , Christopher van Eldik , Johannes Veh , David Berge , Markus Gaug

In my contribution I review the status of indirect detection of dark matter with gamma-rays, including results of the Fermi Gamma-ray Space Telescope as well as Imaging Air Cherenkov Telescopes (IACT), like H.E.S.S., MAGIC and VERITAS. I…

宇宙学与河外天体物理 · 物理学 2011-03-30 Jan Conrad

The Cherenkov Telescope Array (CTA) is a future gamma-ray observatory that is planned to significantly improve upon the sensitivity and precision of the current generation of Cherenkov telescopes. The observatory will consist of several…

Atmospheric Cerenkov Telescopes, including HESS and MAGIC, have detected a spectrum of gamma-rays from the galactic center region which extends from $\sim$200 GeV or lower, to at least $\sim$10 TeV. Although the source of this radiation is…

天体物理学 · 物理学 2008-11-26 Gabrijela Zaharijas , Dan Hooper

The MAGIC TeV gamma-ray telescopes have devoted several hundreds hour of observation time in about a decade, to hunt for particle dark matter indirect signatures in gamma rays, from various candidate targets of interest in the sky: the…

高能天体物理现象 · 物理学 2017-01-23 Michele Doro

The Cherenkov Telescope Array (CTA) will be the next generation observatory employing different types of Cherenkov telescopes for the detection of particle showers initiated by very-high-energy gamma rays. A good knowledge of the Earth's…

天体物理仪器与方法 · 物理学 2018-01-22 Stanislav Stefanik , Raquel de los Reyes , Dalibor Nosek

Molecular clouds act as primary targets for cosmic-ray interactions and are expected to shine in gamma-rays as a by-product of these interactions. Indeed several detected gamma-ray sources both in HE and VHE gamma-rays (HE: 100 MeV < E <…

高能天体物理现象 · 物理学 2015-06-12 G. Pedaletti , D. F. Torres , S. Gabici , E. de Oña Wilhelmi , D. Mazin , V. Stamatescu

We discuss the potential for the detection of dark matter and the characterization of its particle nature via the observation of dark matter subhalos. Specifically, we discuss the search for dark matter Galactic subhalos in the gamma-ray…

The Cherenkov Telescope Array (CTA) is the next generation very high energy gamma-ray observatory. It will consist of three classes of telescopes, of large, medium and small sizes. The small telescopes, of 4 m diameter, will be dedicated to…

Gamma-ray emitting narrow-line Seyfert 1 ($\gamma$-NLSy1) galaxies are thought to harbour relatively low-mass black holes (10$^6$-10$^8$ M$_{\odot}$) accreting close to the Eddington limit. They show characteristics similar to those of…

高能天体物理现象 · 物理学 2018-09-11 P. Romano , S. Vercellone , L. Foschini , F. Tavecchio , M. Landoni , J. Knödlseder

In this article, I summarize and discuss the body of evidence which has accumulated in favor of dark matter in the form of approximately 10 GeV particles. This evidence includes the spectrum and angular distribution of gamma rays from the…

宇宙学与河外天体物理 · 物理学 2012-01-09 Dan Hooper

Weakly interacting massive dark matter (DM) particles are expected to self-annihilate or decay, generating high-energy photons in these processes. This establishes the possibility for indirect detection of DM by \gamma-ray telescopes. For…

宇宙学与河外天体物理 · 物理学 2015-08-17 Moritz Hütten , Gernot Maier

The recent discovery of TeV emission from gamma-ray bursts (GRBs) by the MAGIC and H.E.S.S. Cherenkov telescopes confirmed that emission from these transients can extend to very high energies. The TeV energy domain reaches the most…

高能天体物理现象 · 物理学 2019-10-16 Imre Bartos , K. Rainer Corley , Nihar Gupte , Neil Ash , Zsuzsa. Márka , Szabolcs Márka

The last 20 years have seen the development of new techniques in Astroparticle Physics providing access to the highest end of the electromagnetic spectrum. It has been shown that some sources emit photons up to energies close to 100 TeV.…

高能天体物理现象 · 物理学 2015-08-04 J. L. Contreras , J. Rosado , F. Arqueros , M. López , J. A. Barrio , M. Nievas

The presence of substructures in dark matter haloes is an unavoidable consequence of the cold dark matter paradigm. Indirect signals from these objects have been extensively searched for with cosmic rays and gamma-rays. At first sight,…

高能天体物理现象 · 物理学 2011-02-02 Pierre Brun , Emmanuel Moulin , Jürg Diemand , Jean-François Glicenstein

The presence of dark matter in the universe is nowadays supported by a substantial set of astronomical and cosmological observations. A large amount of dark matter is expected in the Galactic Center (GC) region. Thanks also to its…

高能天体物理现象 · 物理学 2016-09-22 V. Lefranc , E. Moulin

In recent years, ground-based very-high-energy (VHE; E>100 GeV) gamma-ray astronomy has experienced a major breakthrough with the impressive astrophysical results obtained mainly by the current generation experiments like H.E.S.S., MAGIC,…

天体物理仪器与方法 · 物理学 2019-08-14 R. M. Wagner , E. J. Lindfors , A. Sillanpää , S. Wagner