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Among all the high-energy environments of our Galaxy, the Galactic Center (GC) region is definitely the richest. It harbors a large amount of non-thermal emitters, including the closest supermassive black hole, dense molecular clouds,…

The Cherenkov Telescope Array (CTA) will be the world's first open observatory for very high energy gamma-rays. Around a hundred telescopes of different sizes will be used to detect the Cherenkov light that results from gamma-ray induced…

Instrumentation and Methods for Astrophysics · Physics 2019-08-17 A. Zech , J. -P. Amans , S. Blake , C. Boisson , C. Costille , F. De-Frondat , J. -L. Dournaux , D. Dumas , G. Fasola , T. Greenshaw , O. Hervet , J. -M. Huet , P. Laporte , C. Rulten , D. Savoie , F. Sayede , J. Schmoll , H. Sol

The Cherenkov Telescope Array (CTA) will be the world's leading ground-based gamma-ray observatory allowing us to study very high energy phenomena in the Universe. CTA will produce huge data sets, of the order of petabytes, and the…

Instrumentation and Methods for Astrophysics · Physics 2018-10-02 S. Mangano , C. Delgado , M. Bernardos , M. Lallena , J. J. Rodríguez Vázquez

M31 and M33 are the closest spiral galaxies and the largest members (together with the Milky Way) of the Local group, which makes them interesting targets for indirect dark matter searches. In this paper, we present studies of the expected…

The Cherenkov Telescope Array (CTA) is a future ground-based observatory (with two locations, in the Northern and Southern Hemispheres) that will be used in the study of the very-high-energy gamma-ray sky. CTA observations will be proposed…

Instrumentation and Methods for Astrophysics · Physics 2019-08-14 John E. Ward , Javier Rico , Tarek Hassan

The Cherenkov Telescope Array (CTA) is the next generation very-high energy gamma-ray air-shower Cherenkov observatory. CTA will consist of many segmented-mirror telescopes of three different diameters, placed in two arrays, one in the…

Instrumentation and Methods for Astrophysics · Physics 2019-08-14 A. Bonardi , J. Dick , E. Kendziorra , G. Pühlhofer , A. Santangelo

The Next-Generation Atmospheric Cherenkov Telescope Array (NG-ACTA) is proposed as a prospective infrastructure for very high energy (VHE) gamma-ray astronomy, consisting of a mixed-aperture array of 88 telescopes with a maximum array…

High Energy Astrophysical Phenomena · Physics 2026-03-23 Jiancheng Wang , Jirong Mao

The Cherenkov Telescope Array (CTA) will be the next generation gamma-ray observatory and will be the major global instrument for very-high-energy astronomy over the next decade, offering 5 - 10 x better flux sensitivity than current…

Instrumentation and Methods for Astrophysics · Physics 2021-08-03 J. Aschersleben , R. F. Peletier , M. Vecchi , M. H. F. Wilkinson

The present study investigates the feasibility of employing Cherenkov Telescope Array (CTA) technology for the detection of ultra-high-energy (UHE) neutrino-tau particles. By observing the Cherenkov light produced by charged particles…

High Energy Physics - Phenomenology · Physics 2024-06-04 Tariq Bitam , Bouzid Boussaha , Mossaab Messamah

Gamma-ray photons can convert into axion-like particles (ALPs) and vice versa when interacting with astrophysical magnetic fields. The conversions of ALPs may have important implications for astrophysics since they would imprint…

High Energy Astrophysical Phenomena · Physics 2013-05-02 Miguel A. Sanchez-Conde , Stefan Funk , Frank Krennrich , Amanda Weinstein

In this contribution I review the present status and discuss some prospects for indirect detection of dark matter with gamma-rays. Thanks to the Fermi Large Area Telescope, searches in gamma-rays have reached sensitivities that allow to…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 Jan Conrad

In this contribution, CTAs potential role in detection of particle dark matter in the context of other detection approaches is briefly discussed for an audience of gamma-ray astronomers. In particular searches for new particles at the large…

High Energy Astrophysical Phenomena · Physics 2017-08-09 Jan Conrad

Around 160 gamma-ray pulsars were discovered by the Fermi Large Area Telescope (LAT) since 2008. The most energetic of them, 12 objects with emission above 25 GeV, are suitable candidates for the detection with the current and future…

High Energy Astrophysical Phenomena · Physics 2017-08-09 A. Burtovoi , T. Y. Saito , L. Zampieri , T. Hassan

Hierarchical structure formation leads to a clumpy distribution of dark matter in the Milky Way. These clumps are possible targets to search for dark matter annihilation with present and future $\gamma$-ray instruments. Many uncertainties…

High Energy Astrophysical Phenomena · Physics 2016-10-04 Moritz Hütten , Céline Combet , Gernot Maier , David Maurin

The Cherenkov Telescope Array (CTA) is the next-generation stereoscopic system of Imaging Atmospheric Cherenkov Telescopes (IACTs). In IACTs, the atmosphere is used as a calorimeter to measure the energy of extensive air showers induced by…

Instrumentation and Methods for Astrophysics · Physics 2023-06-14 Mario Pecimotika , Dijana Dominis Prester , Dario Hrupec , Saša Mićanović , Lovro Pavletić , Julian Sitarek

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,…

High Energy Astrophysical Phenomena · Physics 2011-02-02 Pierre Brun , Emmanuel Moulin , Jürg Diemand , Jean-François Glicenstein

The current generation of Cherenkov telescopes is mainly limited in their gamma-ray energy and flux reconstruction by uncertainties in the determination of atmospheric parameters. The Cherenkov Telescope Array (CTA) aims to provide…

Instrumentation and Methods for Astrophysics · Physics 2019-08-14 M. Doro , M. Gaug , O. Blanch , LL. Font , D. Garrido , A. Lopez-Oramas , M. Martinez

This paper explores the sensitivity of the Cherenkov Telescope Array Observatory to dark matter annihilation in the Galactic Center, within the frameworks of Effective Field Theory and Simplified Models. We present sensitivity forecasts,…

High Energy Physics - Phenomenology · Physics 2025-12-12 Igor Reis , Andre Scaffidi , Emmanuel Moulin , Martin White

Over the past decades Bayesian methods have become increasingly popular in astronomy and physics as stochastic samplers have enabled efficient investigation of high-dimensional likelihood surfaces. In this work we develop a hierarchical…

High Energy Astrophysical Phenomena · Physics 2022-11-16 Abhi Mangipudi , Eric Thrane , Csaba Balazs

In these proceedings we summarize the current status of the study of the sensitivity of the Cherenkov Telescope Array (CTA) to detect diffuse gamma-ray emission from the Perseus galaxy cluster. Gamma-ray emission is expected in galaxy…

High Energy Astrophysical Phenomena · Physics 2021-08-23 Judit Pérez-Romero