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CERN Document Server 2,010 records found  1 - 10nextend  jump to record: Search took 1.51 seconds. 
1.
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Combined searches for dark matter in dwarf spheroidal galaxies observed with the MAGIC telescopes, including new data from Coma Berenices and Draco / MAGIC Collaboration
Milky Way dwarf spheroidal galaxies (dSphs) are among the best candidates to search for signals of dark matter annihilation with Imaging Atmospheric Cherenkov Telescopes, given their high mass-to-light ratios and the fact that they are free of astrophysical gamma-ray emitting sources. Since 2011, MAGIC has performed a multi-year observation program in search for Weakly Interacting Massive Particles (WIMPs) in dSphs. [...]
arXiv:2111.15009.- 2022-03 - 17 p. - Published in : Phys. Dark Univ. 35 (2022) 100912 Fulltext: PDF;
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Cosmic-ray acceleration and escape from supernova remnant W44 as probed by Fermi-LAT and MAGIC / Abe, S. (Tokyo U., ICRR) ; Abhir, J. (Zurich, ETH) ; Abhishek, A. (INFN, Pisa ; Siena U.) ; Acciari, V.A. (Laguna U., Tenerife) ; Aguasca-Cabot, A. (Barcelona U.) ; Agudo, I. (IAA, Granada) ; Aniello, T. (INAF, Rome) ; Ansoldi, S. (Udine U. ; INFN, Trieste ; ICRA, Rome) ; Antonelli, L.A. (INAF, Rome) ; Engels, A. Arbet (Garching, Max Planck Inst., MPE) et al.
Context. The supernova remnant (SNR) W44 and its surroundings are a prime target for studying the acceleration of cosmic rays (CRs). [...]
arXiv:2501.03889.- 2025-01-01 - 15 p. - Published in : Astron. Astrophys. 693 (2025) A255 Fulltext: 2501.03889 - PDF; document - PDF;
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New hard-TeV extreme blazars detected with the MAGIC telescopes / MAGIC Collaboration
Extreme high-frequency peaked BL Lac objects (EHBLs) are blazars which exhibit extremely energetic synchrotron emission. They also feature non-thermal gamma-ray emission whose peak lies in the very high-energy (VHE, E > 100 GeV) range, and in some sources exceeds 1TeV: this is the case of hard-TeV EHBLs such as 1ES 0229+200. [...]
arXiv:1911.06680.- 2020-02-20 - 24 p. - Published in : Astrophys. J. Suppl. Ser. 247 (2020) 16 Fulltext: PDF;
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Bounds on Lorentz invariance violation from MAGIC observation of GRB 190114C / MAGIC Collaboration
On January 14, 2019, the Major Atmospheric Gamma Imaging Cherenkov telescopes detected GRB 190114C above 0.2 TeV, recording the most energetic photons ever observed from a gamma-ray burst. We use this unique observation to probe an energy dependence of the speed of light in vacuo for photons as predicted by several quantum gravity models. [...]
arXiv:2001.09728.- 2020-07-09 - 7 p. - Published in : Phys. Rev. Lett. 125 (2020) 021301 Fulltext: PDF;
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A search for dark matter in Triangulum II with the MAGIC telescopes / MAGIC Collaboration
We present the first results from very-high-energy observations of the dwarf spheroidal satellite candidate Triangulum II with the MAGIC telescopes from 62.4 hours of good-quality data taken between August 2016 and August 2017. We find no gamma-ray excess in the direction of Triangulum II, and upper limits on both the differential and integral gamma-ray flux are presented. [...]
arXiv:2003.05260.- 2020-05 - 14 p. - Published in : Phys. Dark Univ.: 28 (2020) , pp. 100529
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Probing the very-high-energy gamma-ray spectral curvature in the blazar PG 1553+113 with the MAGIC telescopes / Collaboration for the MAGIC
PG 1553+113 is a very-high-energy (VHE, E>100 GeV) gamma-ray emitter classified as a BL Lac object. Its redshift is constrained by intergalactic absorption lines in the range 0.4<z<0.58. [...]
arXiv:1408.1975.- 2015-07-11 - 12 p. - Published in : Mon. Not. R. Astron. Soc. 450 (2015) 4399-4410 Fulltext: 1408.1975 - PDF; arXiv:1408.1975 - PDF; External link: Preprint
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MAGIC observations of the nearby short gamma-ray burst GRB 160821B / MAGIC Collaboration
The coincident detection of GW170817 in gravitational waves and electromagnetic radiation spanning the radio to MeV gamma-ray bands provided the first direct evidence that short gamma-ray bursts (GRBs) can originate from binary neutron star (BNS) mergers. On the other hand, the properties of short GRBs in high-energy gamma rays are still poorly constrained, with only $\sim$20 events detected in the GeV band, and none in the TeV band. [...]
arXiv:2012.07193.- 2021-02-16 - 11 p. - Published in : Astrophys. J. 908 (2021) 90 Fulltext: PDF;
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Monitoring of the radio galaxy M87 during a low emission state from 2012 to 2015 with MAGIC / MAGIC Collaboration
M87 is one of the closest (z=0.00436) extragalactic sources emitting at very-high-energies (VHE, E > 100 GeV). The aim of this work is to locate the region of the VHE gamma-ray emission and to describe the observed broadband spectral energy distribution (SED) during the low VHE gamma-ray state. [...]
arXiv:2001.01643.- 2020-03-11 - 12 p. - Published in : Mon. Not. R. Astron. Soc. 492 (2020) 5354-5365 Fulltext: PDF;
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Testing emission models on the extreme blazar 2WHSP J073326.7+515354 detected at very high energies with the MAGIC telescopes / MAGIC Collaboration
Extreme high-energy peaked BL Lac objects (EHBLs) are an emerging class of blazars. Their typical two-hump structured spectral energy distribution (SED) peaks at higher energies with respect to conventional blazars. [...]
arXiv:1909.11621.- 2019 - 16 p. - Published in : Mon. Not. R. Astron. Soc. 490 (2019) 2284-2299
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(28)
Periastron Observations of TeV Gamma-Ray Emission from a Binary System with a 50-year Period / VERITAS Collaboration
We report on observations of the pulsar / Be star binary system PSR J2032+4127 / MT91 213 in the energy range between 100 GeV and 20 TeV with the VERITAS and MAGIC imaging atmospheric Cherenkov telescope arrays. [...]
arXiv:1810.05271. - 2018. - 12 p.
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