Search Results - "Arbet Engels, A."
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Bounds on Lorentz Invariance Violation from MAGIC Observation of GRB 190114C
Published in Physical review letters (10-07-2020)“…On January 14, 2019, the Major Atmospheric Gamma Imaging Cherenkov telescopes detected GRB 190114C above 0.2 TeV, recording the most energetic photons ever…”
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2
Search for Gamma-Ray Spectral Lines from Dark Matter Annihilation up to 100 TeV toward the Galactic Center with MAGIC
Published in Physical review letters (10-02-2023)“…Linelike features in TeV γ rays constitute a "smoking gun" for TeV-scale particle dark matter and new physics. Probing the Galactic Center region with…”
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3
Testing emission models on the extreme blazar 2WHSP J073326.7+515354 detected at very high energies with the MAGIC telescopes
Published in Monthly notices of the Royal Astronomical Society (01-12-2019)“…ABSTRACT Extreme high-energy-peaked BL Lac objects (EHBLs) are an emerging class of blazars. Their typical two-hump-structured spectral energy distribution…”
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4
Proton acceleration in thermonuclear nova explosions revealed by gamma rays
Published in Nature astronomy (01-06-2022)“…Classical novae are cataclysmic binary star systems in which the matter of a companion star is accreted on a white dwarf 1 , 2 . Accumulation of hydrogen in a…”
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5
Multiwavelength Variability and Correlation Studies of Mrk 421 During Historically Low X-ray and Y-ray Activity in 2015–2016
Published in Monthly notices of the Royal Astronomical Society (08-12-2020)“…We report a characterization of the multiband flux variability and correlations of the nearby (z=0.031) blazar Markarian 421(Mrk 421) using data from Mets…”
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Constraints on axion-like particles with the Perseus Galaxy Cluster with MAGIC
Published in PHYSICS OF THE DARK UNIVERSE (01-05-2024)“…Axion-like particles (ALPs) are pseudo-Nambu–Goldstone bosons that emerge in various theories beyond the standard model. These particles can interact with…”
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7
Teraelectronvolt emission from the [gamma]-ray burst GRB 190114C
Published in Nature (London) (01-11-2019)“…Long-duration [gamma]-ray bursts (GRBs) are the most luminous sources of electromagnetic radiation known in the Universe. They arise from outflows of plasma…”
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A search for dark matter in Triangulum II with the MAGIC telescopes
Published in PHYSICS OF THE DARK UNIVERSE (01-05-2020)“…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 h…”
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9
A Unified Multi-Wavelength Data Analysis Workflow with gammapy. Constraining the Broadband Emission of FSRQ OP 313
Published 30-09-2024“…The Flat Spectrum Radio Quasar OP~313 entered an enhanced activity phase in November 2023 and has undergone multiple flares since then which have motivated the…”
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10
Standardised formats and open-source analysis tools for the MAGIC telescopes data
Published 27-09-2024“…Instruments for gamma-ray astronomy at Very High Energies ($E>100\,{\rm GeV}$) have traditionally derived their scientific results through proprietary data and…”
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11
Constraints on Lorentz invariance violation from the extraordinary Mrk 421 flare of 2014 using a novel analysis method
Published 11-06-2024“…The Lorentz Invariance Violation (LIV), a proposed consequence of certain quantum gravity (QG) scenarios, could instigate an energy-dependent group velocity…”
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12
MAGIC detection of GRB 201216C at $z=1.1
Published 10-10-2023“…Monthly Notices of the Royal Astronomical Society, Volume 527, Issue 3, January 2024, Pages 5856-5867 Gamma-ray bursts (GRBs) are explosive transient events…”
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13
Multi-wavelength study of Mrk 421 during a TeV flare
Published 04-08-2021“…The blazar Mrk 421 shows frequent, short flares in the TeV energy regime. Due to the fast nature of such episodes, we often fail to obtain sufficient…”
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14
Studying the Extreme Behaviour of 1ES 2344+51.4
Published 27-08-2019“…PoS(ICRC2019)620 The BL Lac type object 1ES 2344+51.4 (redshift $z=0.044$) was one of the first sources to be included in the extreme high-peaked BL Lac (EHBL)…”
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15
Combined searches for dark matter in dwarf spheroidal galaxies observed with the MAGIC telescopes, including new data from Coma Berenices and Draco
Published 29-11-2021“…Physics of the Dark Universe, Volume 35, March 2022, 100912 Milky Way dwarf spheroidal galaxies (dSphs) are among the best candidates to search for signals of…”
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16
Search for Very High-Energy Emission from the millisecond pulsar PSR J0218+4232
Published 25-08-2021“…PSR J0218+4232 is one of the most energetic millisecond pulsars known and has long been considered as one of the best candidates for very high-energy (VHE;…”
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First detection of VHE gamma-ray emission from TXS~1515--273, study of its X-ray variability and spectral energy distribution
Published 20-07-2021“…We report here on the first multi-wavelength (MWL) campaign on the blazar TXS 1515-273, undertaken in 2019 and extending from radio to very-high-energy gamma…”
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18
MAGIC observations of the nearby short gamma-ray burst GRB 160821B
Published 14-12-2020“…ApJ 908, 90 (2021) The coincident detection of GW170817 in gravitational waves and electromagnetic radiation spanning the radio to MeV gamma-ray bands provided…”
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Detection of the Geminga pulsar with MAGIC hints at a power-law tail emission beyond 15 GeV
Published 20-11-2020“…A&A 643, L14 (2020) We report the detection of pulsed gamma-ray emission from the Geminga pulsar (PSR J0633+1746) between $15\,$GeV and $75\,$GeV. This is the…”
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New hard-TeV extreme blazars detected with the MAGIC telescopes
Published 20-08-2020“…The Astrophysical Journal Supplement Series, Volume 247, Issue 1, id.16, 24 pp. (2020) Extreme high-frequency peaked BL Lac objects (EHBLs) are blazars which…”
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