Dmytriiev, A.
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View article: Constraining the nature of the most extreme Galactic particle accelerator. H.E.S.S. observations of the microquasar V4641 Sgr
Constraining the nature of the most extreme Galactic particle accelerator. H.E.S.S. observations of the microquasar V4641 Sgr Open
Microquasars have emerged as promising candidates to explain the cosmic-ray flux at petaelectronvolt energies. LHAASO observations revealed V4641~Sgr as the most extreme example so far. Using $\approx$100~h of H.E.S.S. data, we performed a…
View article: Constraining the nature of the most extreme Galactic particle accelerator. H.E.S.S. observations of the microquasar V4641 Sgr
Constraining the nature of the most extreme Galactic particle accelerator. H.E.S.S. observations of the microquasar V4641 Sgr Open
Microquasars have emerged as promising candidates to explain the cosmic-ray flux at petaelectronvolt energies. LHAASO observations revealed V4641~Sgr as the most extreme example so far. Using $\approx$100~h of H.E.S.S. data, we performed a…
View article: Constraining the nature of the most extreme Galactic particle accelerator. H.E.S.S. observations of the microquasar V4641 Sgr
Constraining the nature of the most extreme Galactic particle accelerator. H.E.S.S. observations of the microquasar V4641 Sgr Open
Microquasars have emerged as promising candidates to explain the cosmic-ray flux at petaelectronvolt energies. LHAASO observations revealed V4641~Sgr as the most extreme example so far. Using $\approx$100~h of H.E.S.S. data, we performed a…
View article: Evidence of 100 TeV<i>γ</i>-ray emission from HESS J1702-420: A new PeVatron candidate
Evidence of 100 TeV<i>γ</i>-ray emission from HESS J1702-420: A new PeVatron candidate Open
Aims. The identification of PeVatrons, hadronic particle accelerators reaching the knee of the cosmic ray spectrum (few × 10 15 eV), is crucial to understand the origin of cosmic rays in the Galaxy. We provide an update on the unidentified…
View article: H.E.S.S. and MAGIC observations of a sudden cessation of a very-high-energy<i>γ</i>-ray flare in PKS 1510−089 in May 2016
H.E.S.S. and MAGIC observations of a sudden cessation of a very-high-energy<i>γ</i>-ray flare in PKS 1510−089 in May 2016 Open
The flat spectrum radio quasar (FSRQ) PKS 1510−089 is known for its complex multiwavelength behaviour and it is one of only a few FSRQs detected in very-high-energy (VHE, E > 100 GeV) γ rays. The VHE γ -ray observations with H.E.S.S. and M…
View article: An extreme particle accelerator in the Galactic plane: HESS J1826−130
An extreme particle accelerator in the Galactic plane: HESS J1826−130 Open
The unidentified very-high-energy (VHE; E > 0.1 TeV) γ -ray source, HESS J1826−130, was discovered with the High Energy Stereoscopic System (HESS) in the Galactic plane. The analysis of 215 h of HESS data has revealed a steady γ -ray flux …
View article: Resolving acceleration to very high energies along the jet of Centaurus A
Resolving acceleration to very high energies along the jet of Centaurus A Open
View article: Constraints on the emission region of 3C 279 during strong flares in 2014 and 2015 through VHE <i>γ</i>-ray observations with H.E.S.S.
Constraints on the emission region of 3C 279 during strong flares in 2014 and 2015 through VHE <i>γ</i>-ray observations with H.E.S.S. Open
The flat spectrum radio quasar 3C 279 is known to exhibit pronounced variability in the high-energy (100 MeV < E < 100 GeV) γ -ray band, which is continuously monitored with Fermi -LAT. During two periods of high activity in April 2014 and…
View article: Upper limits on very-high-energy gamma-ray emission from core-collapse supernovae observed with H.E.S.S.
Upper limits on very-high-energy gamma-ray emission from core-collapse supernovae observed with H.E.S.S. Open
Young core-collapse supernovae with dense-wind progenitors may be able to accelerate cosmic-ray hadrons beyond the knee of the cosmic-ray spectrum, and this may result in measurable gamma-ray emission. We searched for gamma-ray emission fr…
View article: The starburst galaxy NGC 253 revisited by H.E.S.S. and <i>Fermi</i>-LAT
The starburst galaxy NGC 253 revisited by H.E.S.S. and <i>Fermi</i>-LAT Open
Context. NGC 253 is one of only two starburst galaxies found to emit γ -rays from hundreds of MeV to multi-TeV energies. Accurate measurements of the very-high-energy (VHE; E > 100 GeV) and high-energy (HE; E > 60 MeV) spectra are crucial …