output
19982026
most citedFirst Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way

1.9k citations

Showing 2020 · astro-ph.HEShow all

14 papers · 2 filters

astro-ph.HE2020★ 30 cited

VHE gamma-ray detection of FSRQ QSO B1420+326 and modeling of its enhanced broadband state in 2020

V. A. Acciari, S. Ansoldi, L. A. Antonelli +230

Context. QSO B1420+326 is a blazar classified as a Flat Spectrum Radio Quasar (FSRQ). In the beginning of 2020 it underwent an enhanced flux state. An extensive multiwavelength cam…

astro-ph.HE2020★ 31 cited

Observation of a sudden cessation of a very-high-energy gamma-ray flare in PKS 1510-089 with H.E.S.S. and MAGIC in May 2016

H. E. S. S. Collaboration, H. Abdalla, R. Adam +430

The flat spectrum radio quasar (FSRQ) PKS 1510-089 is known for its complex multiwavelength behavior, and is one of only a few FSRQs detected at very high energy (VHE, GeV…

astro-ph.HE2020★ 38 cited

Multiwavelength variability and correlation studies of Mrk 421 during historically low X-ray and -ray activity in 20152016

MAGIC Collaboration, V. A. Acciari, S. Ansoldi +224

We report a characterization of the multi-band flux variability and correlations of the nearby (z=0.031) blazar Markarian 421 (Mrk 421) using data from Metsähovi, Swift, Fermi-LAT,…

astro-ph.HE2020★ 30 cited

Optical spectroscopy of Blazars for the Cherenkov Telescope Array

P. Goldoni, S. Pita, C. Boisson +14

Context. Blazars are the most numerous class of High Energy (HE; E about 50 MeV - few 100 GeV) and Very High Energy (VHE; E about 100 GeV - 10 TeV) gamma-ray emitters. As of today,…

astro-ph.HE2020★ 49 cited

Detection of the Geminga pulsar with MAGIC hints at a power-law tail emission beyond 15 GeV

MAGIC Collaboration, V. A. Acciari, S. Ansoldi +190

We report the detection of pulsed gamma-ray emission from the Geminga pulsar (PSR J0633+1746) between GeV and GeV. This is the first time a middle-aged pulsar has been…

astro-ph.HE2020★ 11 cited

Study of the GeV to TeV morphology of the -Cygni SNR (G78.2+2.1) with MAGIC and Fermi-LAT

MAGIC Collaboration, V. A. Acciari, S. Ansoldi +183

Context. Diffusive shock acceleration (DSA) is the most promising mechanism to accelerate Galactic cosmic rays (CRs) in the shocks of supernova remnants (SNRs). The turbulence upst…