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View article: The H.E.S.S. extragalactic sky survey with the first decade of observations
The H.E.S.S. extragalactic sky survey with the first decade of observations Open
The results of the first extragalactic gamma-ray survey by the High Energy Stereoscopic System (H.E.S.S.) are presented. The survey comprises 2720 hours of very high-energy gamma-ray observations of the extragalactic sky, recorded with H.E…
View article: Very-high-energy γ-Ray Emission from Young Massive Star Clusters in the Large Magellanic Cloud
Very-high-energy γ-Ray Emission from Young Massive Star Clusters in the Large Magellanic Cloud Open
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 amount of the energy that makes the nebula shine so brightly …
View article: H.E.S.S. observations of the 2021 periastron passage of PSR B1259-63/LS 2883
H.E.S.S. observations of the 2021 periastron passage of PSR B1259-63/LS 2883 Open
PSR B1259–63/LS 2883 is a gamma-ray binary system that hosts a pulsar in an eccentric orbit, with a 3.4 yr period, around an O9.5Ve star (LS 2883). At orbital phases close to periastron passages, the system radiates bright and variable non…
View article: Unveiling extended gamma-ray emission around HESS J1813-178
Unveiling extended gamma-ray emission around HESS J1813-178 Open
Context . HESS J1813–178 is a very-high-energy γ -ray source spatially coincident with the young and energetic pulsar PSR J1813–1749 and thought to be associated with its pulsar wind nebula (PWN). Recently, evidence for extended high-energ…
View article: Spectrum and extension of the inverse-Compton emission of the Crab Nebula from a combined <i>Fermi</i>-LAT and H.E.S.S. analysis
Spectrum and extension of the inverse-Compton emission of the Crab Nebula from a combined <i>Fermi</i>-LAT and H.E.S.S. analysis Open
The Crab Nebula is a unique laboratory for studying the acceleration of electrons and positrons through their non-thermal radiation. Observations of very-high-energy γ rays from the Crab Nebula have provided important constraints for model…
View article: TeV flaring activity of the AGN PKS 0625–354 in November 2018
TeV flaring activity of the AGN PKS 0625–354 in November 2018 Open
Most γ -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 misaligned blazars. Here, we investigate the nature of the …
View article: Evidence for <i>γ</i>-ray emission from the remnant of Kepler’s supernova based on deep H.E.S.S. observations <i>(Corrigendum)</i>
Evidence for <i>γ</i>-ray emission from the remnant of Kepler’s supernova based on deep H.E.S.S. observations <i>(Corrigendum)</i> Open
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View article: Curvature in the very-high energy gamma-ray spectrum of M 87
Curvature in the very-high energy gamma-ray spectrum of M 87 Open
The radio galaxy M 87 is a variable very-high energy (VHE) gamma-ray source, exhibiting three major flares, which were reported in 2005, 2008, and 2010. Despite extensive studies, the origin of the VHE gamma-ray emission is not yet fully u…
View article: Acceleration and transport of relativistic electrons in the jets of the microquasar SS 433
Acceleration and transport of relativistic electrons in the jets of the microquasar SS 433 Open
SS 433 is a microquasar, a stellar binary system that launches collimated relativistic jets. We observed SS 433 in gamma rays using the High Energy Stereoscopic System (H.E.S.S.) and found an energy-dependent shift in the apparent position…
View article: High-Statistics Measurement of the Cosmic-Ray Electron Spectrum with H.E.S.S.
High-Statistics Measurement of the Cosmic-Ray Electron Spectrum with H.E.S.S. Open
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 and provide constraints on exotic production mechanisms such …
View article: Spectrum and extension of the inverse-Compton emission of the Crab Nebula from a combined Fermi-LAT and H.E.S.S. analysis
Spectrum and extension of the inverse-Compton emission of the Crab Nebula from a combined Fermi-LAT and H.E.S.S. analysis Open
The Crab Nebula is a unique laboratory for studying the acceleration of electrons and positrons through their non-thermal radiation. Observations of very-high-energy $\gamma$ rays from the Crab Nebula have provided important constraints fo…
View article: Unveiling extended gamma-ray emission around HESS J1813-178
Unveiling extended gamma-ray emission around HESS J1813-178 Open
Context. HESS J1813–178 is a very-high-energy γ-ray source spatially coincident with the young and energetic pulsar PSR J1813–1749 and thought to be associated with its pulsar wind nebula (PWN). Recently, evidence for extended high-energy …
View article: Author Correction: Discovery of a radiation component from the Vela pulsar reaching 20 teraelectronvolts
Author Correction: Discovery of a radiation component from the Vela pulsar reaching 20 teraelectronvolts Open
View article: Discovery of a radiation component from the Vela pulsar reaching 20 teraelectronvolts
Discovery of a radiation component from the Vela pulsar reaching 20 teraelectronvolts Open
View article: Monitoring the first candidate host for the merger of a Supermassive Black Hole Binary with H.E.S.S.
Monitoring the first candidate host for the merger of a Supermassive Black Hole Binary with H.E.S.S. Open
Supermassive black hole binary (SMBHB) is a result of galaxies coalescing, when two supermas-\nsive black holes form a hard binary with distances from kpc to pc. If the system reaches milliparsec\nseparation, the black holes eventually mer…
View article: The Vanishing of the Primary Emission Region in PKS 1510–089
The Vanishing of the Primary Emission Region in PKS 1510–089 Open
In 2021 July, PKS 1510−089 exhibited a significant flux drop in the high-energy γ -ray (by a factor 10) and optical (by a factor 5) bands and remained in this low state throughout 2022. Similarly, the optical polarization in the source van…
View article: Galactic Centre with a Southern Wide Field-of-view Gamma-ray Observatory
Galactic Centre with a Southern Wide Field-of-view Gamma-ray Observatory Open
The Galactic Centre (GC) region is a highly interesting region for very high energy gamma-ray studies due to its proximity and diverse sources. It is also a unique place for Dark Matter (DM) searches, since we expect a large amount of DM i…
View article: H.E.S.S. follow-up observations of GRB 221009A
H.E.S.S. follow-up observations of GRB 221009A Open
GRB 221009A is the brightest gamma-ray burst ever detected. To probe the very-high-energy (VHE, >100 GeV) emission, the High Energy Stereoscopic System (H.E.S.S.) began observations 51.8 hours after the triggering event, when the brightnes…
View article: Searching for gamma-ray counterparts of FRBs with H.E.S.S.
Searching for gamma-ray counterparts of FRBs with H.E.S.S. Open
Fast Radio Bursts (FRBs) are highly energetic, extremely short-lived bursts of radio flashes.\nDespite extensive research, the exact cause of these outbursts remains a mystery. One of the\nmost accredited models suggests that they originat…
View article: The Eta Carinae 2020 periastron passage as seen by H.E.S.S.
The Eta Carinae 2020 periastron passage as seen by H.E.S.S. Open
The binary system Eta Carinae is a unique laboratory to study particle acceleration up to very high energies (VHE) under a wide range of conditions. Particles are thought to be accelerated at shocks forming in the wind collision region. Et…
View article: Towards the second H.E.S.S. galactic plane catalogue
Towards the second H.E.S.S. galactic plane catalogue Open
The H.E.S.S. Galactic Plane Survey (HGPS), carried out between 2004 and 2013,\nis the most extensive survey of our Galaxy at very-high energies that covers\nthe southern sky. Since the first HPGS catalogue release, the new observations\nac…
View article: Modelling of highly extended Gamma-ray emission around the Geminga Pulsar as detected with H.E.S.S.
Modelling of highly extended Gamma-ray emission around the Geminga Pulsar as detected with H.E.S.S. Open
Geminga is an enigmatic radio-quiet gamma-ray pulsar located at a mere 250 pc distance from Earth. Extended very-high-energy gamma-ray emission around the pulsar has been detected by multiple water Cherenkov detector based instruments. How…
View article: H.E.S.S. Observations of the Gamma-ray Binary LMC P3
H.E.S.S. Observations of the Gamma-ray Binary LMC P3 Open
LMC P3 is a gamma-ray binary comprising of an unconfirmed compact object and an O-star and is\nlocated in the Large Magellanic Cloud. Initially discovered in Fermi-LAT data, it shows an orbital\nperiod of 10.3 days. H.E.S.S. has reported t…
View article: Probing the morphology of the low state gamma-ray emission of M87 with H.E.S.S.
Probing the morphology of the low state gamma-ray emission of M87 with H.E.S.S. Open
This work aims to study the very-high-energy (VHE; 100 GeV - 100 TeV) gamma-ray emission from M87, especially its low state emission, and probe a potential hadronic emission component in the inner Virgo Cluster. Probing a steady and extend…
View article: An updated view of the VHE gamma-ray sky around the stellar cluster Westerlund 2 with the H.E.S.S. experiment
An updated view of the VHE gamma-ray sky around the stellar cluster Westerlund 2 with the H.E.S.S. experiment Open
Since the last H.E.S.S. publication on the stellar cluster Westerlund 2 in 2011, the H.E.S.S. dataset on this region has increased more than three-fold in exposure to $\\sim220\\,$h of total observation time. By applying a novel approach t…
View article: Joint H.E.S.S. and Fermi-LAT analysis of the region around PSR J1813-1749
Joint H.E.S.S. and Fermi-LAT analysis of the region around PSR J1813-1749 Open
HESS J1813-178 is one of the brightest sources detected during the first HESS Galactic Plane survey. The compact source, also detected by MAGIC, is believed to be a pulsar wind nebula powered by one of the most powerful pulsars known in th…
View article: H.E.S.S. realtime follow-ups of IceCube high-energy neutrino alerts
H.E.S.S. realtime follow-ups of IceCube high-energy neutrino alerts Open
The evidence for multi-messenger photon and neutrino emission from the blazar\nTXS 0506+056 has demonstrated the importance of realtime follow-up of neutrino\nevents by various ground- and space-based facilities. The effort of H.E.S.S.\nan…
View article: Constraints on the Intergalactic Magnetic Field Using Fermi-LAT and H.E.S.S. Blazar Observations
Constraints on the Intergalactic Magnetic Field Using Fermi-LAT and H.E.S.S. Blazar Observations Open
Magnetic fields in galaxies and galaxy clusters are believed to be the result of the amplification of intergalactic seed fields during the formation of large-scale structures in the universe. However, the origin, strength, and morphology o…
View article: Constraining the cosmic-ray pressure in the inner Virgo Cluster using H.E.S.S. observations of M 87
Constraining the cosmic-ray pressure in the inner Virgo Cluster using H.E.S.S. observations of M 87 Open
The origin of the gamma-ray emission from M 87 is currently a matter of debate. This work aims to localize the very high-energy (VHE; 100 GeV – 100 TeV) gamma-ray emission from M 87 and probe a potential extended hadronic emission componen…
View article: Constraining the cosmic-ray pressure in the inner Virgo Cluster using H.E.S.S. observations of M 87
Constraining the cosmic-ray pressure in the inner Virgo Cluster using H.E.S.S. observations of M 87 Open
The origin of the gamma-ray emission from M87 is currently a matter of debate. This work aims to localize the VHE (100 GeV-100 TeV) gamma-ray emission from M87 and probe a potential extended hadronic emission component in the inner Virgo C…