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CERN Document Server Sök i 932 journaler efter:  1 - 10nästaslut  gå till journal: Sökningen tog 0.78 sekunder. 
1.
Combined dark matter search towards dwarf spheroidal galaxies with Fermi-LAT, HAWC, H.E.S.S., MAGIC, and VERITAS / Fermi-LAT Collaboration
Dwarf spheroidal galaxies (dSphs) are excellent targets for indirect dark matter (DM) searches using gamma-ray telescopes because they are thought to have high DM content and a low astrophysical background. [...]
arXiv:2508.20229. - 46.
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2.
Testing the ubiquitous presence of very high energy emission in gamma-ray bursts with the MAGIC telescopes / Abe, S. (Tokyo U., ICRR) ; Abhir, J. (Zurich, ETH) ; Abhishek, A. (INFN, Pisa ; Siena U.) ; Acciari, V.A. (Barcelona, IFAE) ; 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.
Gamma-ray bursts (GRBs) are the most powerful transient objects in the Universe, and they are a primary target for the MAGIC Collaboration. Recognizing the challenges of observing these elusive objects with Imaging Atmospheric Cherenkov Telescopes (IACTs), we implemented a dedicated observational strategy that included an automated procedure for rapid re-pointing to transient sources. [...]
arXiv:2507.05215.- 2025-08-01 - 15 p. - Published in : Astron. Astrophys. 700 (2025) A96 Fulltext: document - PDF; 2507.05215 - PDF;
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3.
Time-dependent modelling of short-term variability in the TeV-blazar VER J0521+211 during the major flare in 2020 / MAGIC Collaboration
The BL Lacertae object VER J0521+211 underwent a notable flaring episode in February 2020. A short-term monitoring campaign, led by the MAGIC (Major Atmospheric Gamma Imaging Cherenkov) collaboration, covering a wide energy range from radio to very-high-energy (VHE, 100 GeV < E < 100 TeV) gamma rays was organised to study its evolution. [...]
arXiv:2412.15836.- 2025-02-01 - 19 p.
Fulltext: document - PDF; 2412.15836 - PDF;
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4.
Characterization of Markarian 421 during its most violent year: Multiwavelength variability and correlations / Abe, K. (Tokai U., Hiratsuka) ; Abe, S. (Tokyo U., ICRR) ; Abhir, J. (Zurich, ETH) ; Abhishek, A. (INFN, Pisa ; Siena U.) ; Acciari, V.A. (Barcelona, IFAE) ; Aguasca-Cabot, A. (Barcelona U.) ; Agudo, I. (Granada U., Theor. Phys. Astrophys.) ; Aniello, T. (INAF, Rome) ; Ansoldi, S. (Udine U. ; INFN, Trieste ; ICRA, Rome) ; Antonelli, L.A. (INAF, Rome) et al.
Mrk 421 was in its most active state around early 2010, which led to the highest TeV gamma-ray flux ever recorded from any active galactic nuclei. We aim to characterize the multiwavelength behavior during this exceptional year for Mrk 421, and evaluate whether it is consistent with the picture derived with data from other less exceptional years. [...]
arXiv:2501.03831.- 2025-02-01 - 21 p. - Published in : Astron. Astrophys. 694 (2025) A195 Fulltext: document - PDF; 2501.03831 - PDF;
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5.
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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6.
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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7.
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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8.
Study of the GeV to TeV morphology of the $\gamma$-Cygni SNR (G78.2+2.1) with MAGIC and Fermi-LAT / MAGIC Collaboration
Context. [...]
arXiv:2010.15854. - 20 p.
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9.
An intermittent extreme BL Lac: MWL study of 1ES 2344+514 in an enhanced state / MAGIC Collaboration
Extreme High-frequency BL~Lacs (EHBL) feature their synchrotron peak of the broadband spectral energy distribution (SED) at $\nu_{\rm s} \geq $10$^{17}$\,Hz. The BL~Lac object 1ES~2344+514 was included in the EHBL family because of its impressive shift of the synchrotron peak in 1996 [...]
arXiv:2006.06796.- 2020-08-11 - 17 p. - Published in : Mon. Not. R. Astron. Soc. 496 (2020) 3912 Fulltext: PDF;
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10.
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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