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Recent MAGIC results on Galactic binaries
(2022)PoS: Proceedings of Science ~ Proceedings of 37th International Cosmic Ray ConferenceX-ray and gamma-ray binaries are systems consisting of a compact object and normally a non-degenerate companion star. Most of these sources have been shown to emit radiation in a broad frequency range, from radio up to X-rays and sometimes gamma rays. We report on recent results in very high-energy gamma rays above 100 GeV obtained by the MAGIC Collaboration for the Galactic X-ray binaries MAXI J1820+070 and 1A 0535+262, and the gamma-ray ...Conference Paper -
Relentless multi-wavelength variability of Mrk 421 and Mrk 501
(2022)PoS: Proceedings of Science ~ Proceedings of 37th International Cosmic Ray ConferenceMrk 421 and Mrk 501 are two close, bright and well-studied high-synchrotron-peaked blazars, which feature bright and persistent GeV and TeV emission. We use the longest and densest dataset of unbiased observations of these two sources, obtained at TeV and GeV energies during five years with FACT and Fermi-LAT. To characterize the variability and derive constraints on the emission mechanism, we augment the dataset with contemporaneous ...Conference Paper -
Performance of the Cherenkov Telescope Array in the presence of clouds
(2022)PoS: Proceedings of Science ~ Proceedings of 37th International Cosmic Ray ConferenceThe Cherenkov Telescope Array (CTA) is the future ground-based observatory for gamma-ray astronomy at very high energies. The atmosphere is an integral part of every Cherenkov telescope. Different atmospheric conditions, such as clouds, can reduce the fraction of Cherenkov photons produced in air showers that reach ground-based telescopes, which may affect the performance. Decreased sensitivity of the telescopes may lead to misconstructed ...Conference Paper -
Development of an advanced SiPM camera for the Large Size Telescope of the Cherenkov Telescope Array Observatory
(2022)PoS: Proceedings of Science ~ Proceedings of 37th International Cosmic Ray ConferenceSilicon photomultipliers (SiPMs) have become the baseline choice for cameras of the small-sized telescopes (SSTs) of the Cherenkov Telescope Array (CTA). On the other hand, SiPMs are relatively new to the field and covering large surfaces and operating at high data rates still are challenges to outperform photomultipliers (PMTs). The higher sensitivity in the near infra-red and longer signals compared to PMTs result in higher night sky ...Conference Paper -
Prototype Open Event Reconstruction Pipeline for the Cherenkov Telescope Array
(2022)PoS: Proceedings of Science ~ Proceedings of 37th International Cosmic Ray ConferenceThe Cherenkov Telescope Array (CTA) is the next-generation gamma-ray observatory currently under construction. It will improve over the current generation of imaging atmospheric Cherenkov telescopes (IACTs) by a factor of five to ten in sensitivity and it will be able to observe the whole sky from a combination of two sites: a northern site in La Palma, Spain, and a southern one in Paranal, Chile. CTA will also be the first open gamma-ray ...Conference Paper -
Combined dark matter searches towards dwarf spheroidal galaxies with Fermi-LAT, HAWC, H.E.S.S., MAGIC, and VERITAS
(2022)PoS: Proceedings of Science ~ Proceedings of 37th International Cosmic Ray ConferenceCosmological and astrophysical observations suggest that 85% of the total matter of the Universe is made of Dark Matter (DM). However, its nature remains one of the most challenging and fundamental open questions of particle physics. Assuming particle DM, this exotic form of matter cannot consist of Standard Model (SM) particles. Many models have been developed to attempt unraveling the nature of DM such as Weakly Interacting Massive ...Conference Paper -
Sensitivity of the Cherenkov Telescope Array to a dark matter signal from the Galactic centre
(2022)PoS: Proceedings of Science ~ Proceedings of 37th International Cosmic Ray ConferenceHigh-energy gamma rays are promising tools to constrain or reveal the nature of dark matter, in particular Weakly Interacting Massive Particles. Being well into its pre-construction phase, the Cherenkov Telescope Array (CTA) will soon probe the sky in the 20 GeV - 300 TeV energy range. Thanks to its improved energy and angular resolutions as well as significantly larger effective area when compared to the current generation of Cherenkov ...Conference Paper -
Exploring the population of Galactic very-high-energy γ-ray sources
(2022)PoS: Proceedings of Science ~ Proceedings of 37th International Cosmic Ray ConferenceAt very high energies (VHE), the emission of γ rays is dominated by discrete sources. Due to the limited resolution and sensitivity of current-generation instruments, only a small fraction of the total Galactic population of VHE γ-ray sources has been detected significantly. The larger part of the population can be expected to contribute as a diffuse signal alongside emission originating from propagating cosmic rays. Without quantifying ...Conference Paper -
Searching for very-high-energy electromagnetic counterparts to gravitational-wave events with the Cherenkov Telescope Array
(2022)PoS: Proceedings of Science ~ Proceedings of 37th International Cosmic Ray ConferenceThe detection of electromagnetic (EM) emission following the gravitational wave (GW) event GW170817 opened the era of multi-messenger astronomy with GWs and provided the first direct evidence that at least a fraction of binary neutron star (BNS) mergers are progenitors of short Gamma-Ray Bursts (GRBs). GRBs are also expected to emit very-high energy (VHE, > 100 GeV) photons, as proven by the recent MAGIC and H.E.S.S. observations. One of ...Conference Paper -
BL Lac object 1ES 0647+250, a decade of MWL observations
(2022)PoS: Proceedings of Science ~ 37th International Cosmic Ray Conference (ICRC 2021)The high-peaked BL Lac object 1ES 0647+250 is one of the few distant blazars detected at very-high-energy (VHE, E>100 GeV) γ rays during non-flaring activity. Its redshift is still uncertain, with a recently proposed lower limit of z>0.29. This blazar was first detected by the MAGIC telescopes between 2009 and 2011 during its low state, displaying a flux of around 2% of the Crab Nebula above 100 GeV, but it has shown several periods of ...Conference Paper