274 citations · 1.7k across the 88 of their papers we have counts for
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Spectro-Polarimetric Observations of TeV Sources (SPOTS): First results
J. Barnard, B. van Soelen, I. P. van der Westhuizen +5
Blazars are jetted active galactic nuclei, with the jet aligned along the observer's line of sight. Their spectral energy distributions are dominated by non-thermal emission, with…
Scrutinizing the 2020 multiwavelength outburst of PKS 0903-57 through observations with H.E.S.S
A. Acharyya, F. Aharonian, F. Ait Benkhali +138
The blazar PKS 0903-57 has recently been classified as a flat spectrum radio quasar at a redshift of . In March and April 2020, Fermi-LAT and AGILE reported tremendous ac…
Prompt Searches for Very-High-Energy γ-Ray Counterparts to IceCube Astrophysical Neutrino Alerts
J. Abhir, A. Biland, K. Brand +817
The search for sources of high-energy astrophysical neutrinos can be significantly advanced through a multi-messenger approach, which seeks to detect the gamma rays that accompany…
H.E.S.S. programme searching for VHE gamma rays associated with FRBs
F. Aharonian, A. Archaryya, J. Aschersleben +127
Fast Radio Bursts (FRBs) are highly energetic, extremely short-lived bursts of radio flashes. Despite extensive research, the exact cause of these outbursts remains speculative. Th…
Science Prospects for the Southern Wide-field Gamma-ray Observatory: SWGO
SWGO Collaboration, P. Abreu, R. Alfaro +303
Ground-based gamma-ray astronomy is now well established as a key observational approach to address critical topics at the frontiers of astroparticle physics and high-energy astrop…
KM3NeT Constraint on Lorentz-Violating Superluminal Neutrino Velocity
KM3NeT Collaboration, O. Adriani, S. Aiello +290
Lorentz invariance is a fundamental symmetry of spacetime and foundational to modern physics. One of its most important consequences is the constancy of the speed of light. This in…
On the Potential Galactic Origin of the Ultra-High-Energy Event KM3-230213A
O. Adriani, S. Aiello, A. Albert +286
The KM3NeT observatory detected the most energetic neutrino candidate ever observed, with an energy between 72 PeV and 2.6 EeV at the 90% confidence level. The observed neutrino is…
On the potential cosmogenic origin of the ultra-high-energy event KM3-230213A
The KM3NeT collaboration
On the 13th February 2023 the KM3NeT/ARCA telescope observed a track-like event compatible with a ultra-high-energy muon with an estimated energy of 120 PeV, produced by a neutrino…
The ultra-high-energy event KM3-230213A within the global neutrino landscape
KM3NeT Collaboration, O. Adriani, S. Aiello +290
On February 13th, 2023, the KM3NeT/ARCA telescope detected a neutrino candidate with an estimated energy in the hundreds of PeVs. In this article, the observation of this ultra-hig…
Characterizing Candidate Blazar Counterparts of the Ultra-High-Energy Event KM3-230213A
KM3NeT Collaboration, MessMapp Group, LAT Collaboration +13
High-energy astrophysical neutrinos serve as crucial messengers for understanding hadronic acceleration processes and identifying the origins of cosmic rays, with blazars among the…
Detection of very-high-energy gamma-ray emission from Eta Carinae during its 2020 periastron passage
H. E. S. S. Collaboration, F. Aharonian, F. Ait Benkhali +137
The colliding-wind binary system Carinae has been identified as a source of high-energy (HE, below 100\,GeV) and very-high-energy (VHE, above 100\,GeV) gamma rays i…
High-Statistics Measurement of the Cosmic-Ray Electron Spectrum with H.E.S.S
F. Aharonian, F. Ait Benkhali, J. Aschersleben +144
Owing to their rapid cooling rate and hence loss-limited propagation distance, cosmic-ray electrons and positrons (CRe) at very high energies probe local cosmic-ray accelerators an…
Multi-wavelength study of OT 081: broadband modelling of a transitional blazar
MAGIC Collaboration, H. Abe, S. Abe +270
OT 081 is a well-known, luminous blazar that is remarkably variable in many energy bands. We present the first broadband study of the source which includes very-high-energy (VHE, $…
First Searches for Dark Matter with the KM3NeT Neutrino Telescopes
KM3NeT Collaboration, S. Aiello, A. Albert +262
Indirect dark matter detection methods are used to observe the products of dark matter annihilations or decays originating from astrophysical objects where large amounts of dark ma…
Very-high-energy -ray emission from young massive star clusters in the Large Magellanic Cloud
F. Aharonian, F. Ait Benkhali, J. Aschersleben +129
The Tarantula Nebula in the Large Magellanic Cloud is known for its high star formation activity. At its center lies the young massive star cluster R136, providing a significant am…
H.E.S.S. observations of the 2021 periastron passage of PSR B1259-63/LS 2883
H. E. S. S. Collaboration, F. Aharonian, F. Ait Benkhali +141
PSR B1259-63 is a gamma-ray binary system that hosts a pulsar in an eccentric orbit, with a 3.4 year period, around an O9.5Ve star. At orbital phases close to periastron passages,…
Search for Neutrino Emission from GRB 221009A using the KM3NeT ARCA and ORCA detectors
S. Aiello, A. Albert, M. Alshamsi +273
Gamma-ray bursts are promising candidate sources of high-energy astrophysical neutrinos. The recent GRB 221009A event, identified as the brightest gamma-ray burst ever detected, pr…
Differential Sensitivity of the KM3NeT/ARCA detector to a diffuse neutrino flux and to point-like source emission: exploring the case of the Starburst Galaxies
KM3NeT Collaboration
KM3NeT/ARCA is a Cherenkov neutrino telescope under construction in the Mediterranean sea, optimised for the detection of astrophysical neutrinos with energies above 1~TeV. I…
Unveiling extended gamma-ray emission around HESS J1813-178
F. Aharonian, F. Ait Benkhali, J. Aschersleben +147
HESS J1813178 is a very-high-energy -ray source spatially coincident with the young and energetic pulsar PSR J18131749 and thought to be associated with its pulsar wind ne…
Atmospheric muons measured with the KM3NeT detectors in comparison with updated numeric predictions
KM3NeT Collaboration
The measurement of the flux of muons produced in cosmic ray air showers is essential for the study of primary cosmic rays. Such measurements are important in extensive air shower d…
Curvature in the very-high energy gamma-ray spectrum of M87
H. E. S. S. Collaboration, F. Aharonian, F. Ait Benkhali +132
The radio galaxy M87 is a variable very-high energy (VHE) gamma-ray source, exhibiting three major flares reported in 2005, 2008, and 2010. Despite extensive studies, the origin of…
Astronomy potential of KM3NeT/ARCA
S. Aiello, A. Albert, M. Alshamsi +275
The KM3NeT/ARCA neutrino detector is currently under construction at 3500 m depth offshore Capo Passero, Sicily, in the Mediterranean Sea. The main science objectives are the detec…
TeV flaring activity of the AGN PKS 0625-354 in November 2018
H. E. S. S. Collaboration, F. Aharonian, F. Ait Benkhali +139
Most -ray detected active galactic nuclei are blazars with one of their relativistic jets pointing towards the Earth. Only a few objects belong to the class of radio galaxies or…
Searches for neutrino counterparts of gravitational waves from the LIGO/Virgo third observing run with KM3NeT
KM3NeT Collaboration, S. Aiello, A. Albert +273
The KM3NeT neutrino telescope is currently being deployed at two different sites in the Mediterranean Sea. First searches for astrophysical neutrinos have been performed using data…