888 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- D. Buckley6 profiles32 · h 39
- P. Meintjes2 profiles28 · h 36
- B. van Soelen2 profiles15 · h 13
- K. K. Singh3 profiles11 · h 14
- M. Gromadzki8 · h 33
- S. Scaringi8 · h 24
- A. Odendaal7 · h 6
- J. Beirlant7 · h 39
- S. Potter2 profiles7 · h 25
- A. Udalski6 · h 72
- C. Knigge3 profiles6 · h 47
- F. Ramamonjisoa2 profiles6 · h 4
- University of WarsawPL118 papers
- Centre National de la Recherche ScientifiqueFR117 papers
- Heidelberg UniversityDE103 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR95 papers
- Nicolaus Copernicus Astronomical CenterPL94 papers
- North-West UniversityZA92 papers
- University of PotsdamDE90 papers
- Dublin Institute For Advanced StudiesIE88 papers
- University of TübingenDE88 papers
- University of LeicesterGB87 papers
- Friedrich-Alexander-Universität Erlangen-NürnbergDE86 papers
- Universität HamburgDE86 papers
21 papers · 1 filter
Simultaneous observations of the blazar PKS2155-304 from Ultra-Violet to TeV energies
H. E. S. S., Fermi, NuSTAR collaborations
The results of the first ever contemporaneous multi-wavelength observation campaign on the BL Lac object PKS2155-304 involving Swift, NuSTAR, Fermi-LAT and H.E.S.S. are reported. T…
H.E.S.S. and Fermi-LAT observations of PSR B1259-63/LS 2883 during its 2014 and 2017 periastron passages
H. E. S. S. Collaboration, H. Abdalla, R. Adam +222
PSR B1259-63/LS 2883 is a gamma-ray binary system consisting of a pulsar in an eccentric orbit around a bright Oe stellar-type companion star that features a dense circumstellar di…
An Artificial Intelligence based approach for constraining the redshift of blazars using --ray observation
K K Singh, V K Dhar, P J Meintjes
In this paper, we discuss an artificial intelligence based approach to constrain the redshift of blazars using combined --ray observations from the \emph{Fermi} Large Area Teles…
A very-high-energy component deep in the Gamma-ray Burst afterglow
H. Abdalla R. Adam F. Aharonian F. Ait Benkhali E. O. Anguener M. Arakawa, C. Arcaro, C. Armand +219
Gamma-ray bursts (GRBs) are brief flashes of gamma rays, considered to be the most energetic explosive phenomena in the Universe. The emission from GRBs comprises a short (typicall…
H.E.S.S. detection of very-high-energy gamma-ray emission from the quasar PKS 0736+017
H. E. S. S. Collaboration, :, H. Abdalla +225
Flat-spectrum radio-quasars (FSRQs) are rarely detected at very-high-energies (VHE; E>100 GeV) due to their low-frequency-peaked SEDs. At present, only 6 FSRQs are known to emit VH…
Overview of non-transient gamma-ray binaries and prospects for the Cherenkov Telescope Array
M. Chernyakova, D. Malyshev, A. Paizis +20
We simulate the spectral behaviour of the non-transient gamma-ray binaries using archival observations as a reference. With this we test the CTA capability to measure the sources'…
Long term multi-wavelength view of the blazar 1ES 1218+304
K. K. Singh, B. Bisschoff, B. van Soelen +3
In this work, we present a multi-wavelength study of the blazar 1ES 1218+304 using near simultaneous observations over 10 years during the period September 1, 2008 to August 31, 20…
Results from the long-term Fermi-LAT observations of the white dwarf binary pulsar AR Scorpii
Q. Kaplan, P. J. Meintjes, K. K. Singh +3
The discovery of the white dwarf binary system AR Scorpii (AR Sco) with its fascinating non-thermal dominated multi-frequency emission has sparked renewed interest in potential hig…
Supersoft X-ray emission from a white dwarf binary not powered by nuclear fusion
Thomas J. Maccarone, Thomas J. Nelson, Peter J. Brown +17
Supersoft X-ray sources are stellar objects which emit X-rays with temperatures of about 1 million Kelvin and luminosities well in excess of what can be produced by stellar coronae…
Constraints on the emission region of 3C 279 during strong flares in 2014 and 2015 through VHE gamma-ray observations with H.E.S.S
H. E. S. S. Collaboration, H. Abdalla, R. Adam +224
The flat spectrum radio quasar 3C 279 is known to exhibit pronounced variability in the high-energy (MeVGeV) -ray band, which is continuously monitored with Fer…
Extremely High energy peaked BL Lac nature of the TeV blazar Mrk 501
K K Singh, P J Meintjes, F A Ramamonjisoa +1
Extremely High energy peaked BL Lac (EHBL) objects are a special class of blazars with peculiar observational properties at X-ray and --ray energies. The observations of these s…
Optical polarization properties of February 2010 outburst of the blazar Mrk 421
K K Singh, P J Meintjes, B van Soelen +2
In this paper, we explore the behavior of optical polarization during the multi-wavelength outburst of the blazar Mrk 421 detected in February 2010. We use optical polarization mea…
H.E.S.S. and Suzaku observations of the Vela X pulsar wind nebula
H. E. S. S. Collaboration
Pulsar Wind Nebulae (PWNe) represent the most prominent population of Galactic very-high-energy gamma-ray sources and are thought to be an efficient source of leptonic cosmic rays.…
Upper Limits on Very-High-Energy Gamma-ray Emission from Core-Collapse Supernovae Observed with H.E.S.S
H. E. S. S. Collaboration, :, H. Abdalla +225
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 measurabl…
H.E.S.S. observations of the flaring gravitationally lensed galaxy PKS 1830-211
H. E. S. S. Collaboration, :, H. Abdalla +224
PKS 1830-211 is a known macrolensed quasar located at a redshift of z=2.5. Its high-energy gamma-ray emission has been detected with the Fermi-LAT instrument and evidence for lensi…
Using synchrotron emission modelling of relativistic hydrodynamic jet simulations to study the FR I/FR II dichotomy of Active Galactic nuclei radio jets
Izak P. van der Westhuizen, Brian van Soelen, Petrus J. Meintjes +1
In this paper three dimensional relativistic hydrodynamic simulations of AGN jets are presented to investigate the FR I/FR II dichotomy. Three simulations are presented which illus…
Prolonged sub-luminous state of the new transitional pulsar candidate CXOU J110926.4-650224
Francesco Coti Zelati, Alessandro Papitto, Domitilla de Martino +12
We report on a multi-wavelength study of the unclassified X-ray source CXOU J110926.4-650224 (J1109). We identified the optical counterpart as a blue star with a magnitude of $\sim…
The orbital parameters of the gamma-ray binary LMC P3
B. van Soelen, N. Komin, A. Kniazev +1
LMC P3 is the most luminous gamma-ray binary discovered to date and the first detected outside of the Galaxy, with an orbital period of 10.301 d. We report on optical spectroscopic…
VHE Gamma-ray Observation of Crab Nebula with HAGAR Telescope Array
B. B. Singh, R. J. Britto, V. R. Chitnis +13
HAGAR is a system of seven Non-imaging Atmospheric Cherenkov Telescopes located at Hanle in the Ladakh region of the Indian Himalayas at an altitude of 4270 meters {\it amsl}. Sinc…
The 2014 TeV Gamma-ray Flare of Mrk 501 Seen with H.E.S.S.: Temporal and Spectral Constraints on Lorentz Invariance Violation
H. E. S. S. Collaboration, :, H. Abdalla +232
The blazar Mrk 501 (z=0.034) was observed at very-high-energy (VHE, ~GeV) gamma-ray wavelengths during a bright flare on the night of 2014 June 23-24 (MJD 56832) with…
Full orbital solution for the binary system in the northern Galactic disc microlensing event Gaia16aye
Łukasz Wyrzykowski, P. Mróz, K. A. Rybicki +182
Gaia16aye was a binary microlensing event discovered in the direction towards the northern Galactic disc and was one of the first microlensing events detected and alerted to by the…