10.6k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR3.4k papers
- Université Grenoble AlpesFR2.3k papers
- Université Joseph FourierFR1.2k papers
- Observatoire de ParisFR928 papers
- European Southern ObservatoryCL889 papers
- Sorbonne UniversitéFR706 papers
- Max Planck Institute for AstronomyDE679 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR623 papers
- Université Paris CitéFR596 papers
- California Institute of TechnologyUS588 papers
- Laboratoire d’études spatiales et d’instrumentation en astrophysiqueFR578 papers
- University of GenevaCH577 papers
26 papers · 2 filters
Anatomy of the AGN in NGC 5548 IX. Photoionized emission features in the soft X-ray spectra
Junjie Mao, J. S. Kaastra, M. Mehdipour +10
The X-ray narrow emission line region (NELR) of the archetypal Seyfert 1 galaxy NGC\,5548 has been interpreted as a single-phase photoionized plasma that is absorbed by some of the…
TeV gamma-ray observations of the binary neutron star merger GW170817 with H.E.S.S
H. E. S. S. Collaboration, :, H. Abdalla +250
We search for high-energy gamma-ray emission from the binary neutron star merger GW170817 with the H.E.S.S. Imaging Air Cherenkov Telescopes. The observations presented here have b…
HESS J1741-302: a hidden accelerator in the Galactic plane
H. E. S. S. Collaboration, :, H. Abdalla +252
The H.E.S.S. collaboration has discovered a new very high energy (VHE, E 0.1 TeV) -ray source, HESS J1741-302, located in the Galactic plane. Despite several attempts to con…
Dissipation of the striped pulsar wind
Benoît Cerutti, Alexander A. Philippov
Rapidly rotating neutron stars blow a relativistic, magnetized wind mainly composed of electron-positron pairs. The free expansion of the wind terminates far from the neutron star…
Gamma-ray emission from internal shocks in novae
Pierrick Martin, Guillaume Dubus, Pierre Jean +2
Gamma-ray emission at energies >100MeV has been detected from nine novae using the Fermi-LAT, and it can be explained by particle acceleration at shocks in these systems. Eight out…
Testing warm Comptonization models for the origin of the soft X-ray excess in AGN
P. O. Petrucci, F. Ursini, A. De Rosa +5
The X-ray spectra of many active galactic nuclei (AGN) show a soft X-ray excess below 1-2 keV on top of the extrapolated high- energy power law. The origin of this component is unc…
NuSTAR spectral analysis of two bright Seyfert 1 galaxies: MCG +8-11-11 and NGC 6814
A. Tortosa, S. Bianchi, A. Marinucci +10
We report on the NuSTAR observations of two bright Seyfert 1 galaxies, namely MCG +8-11-11 (100 ks) and NGC 6814 (150 ks). The main goal of these observations was to investigate th…
Multi-wavelength campaign on NGC7469 II. Column densities and variability in the X-ray spectrum
U. Peretz, E. Behar, G. A. Kriss +16
We investigate the ionic column density variability of the ionized outflows associated with NGC7469, to estimate their location and power. This could allow a better understan…
Instability in strongly magnetized accretion discs: A global perspective
Upasana Das, Mitchell C. Begelman, Geoffroy Lesur
We examine the properties of strongly magnetized accretion discs in a global framework, with particular focus on the evolution of magnetohydrodynamic instabilities such as the magn…
Photoionization instability of the Fe K absorbing plasma in the neutron star transient AX J1745.6-2901
Stefano Bianchi, Gabriele Ponti, Teo Muñoz-Darias +1
AX J1745.6-2901 is a Low Mass X-ray Binary with an accreting neutron star, showing clear evidence for highly ionized absorption. Strong ionized Fe K and K absorption lines ar…
Measurement of the EBL spectral energy distribution using the VHE gamma-ray spectra of H.E.S.S. blazars
H. E. S. S. Collaboration, :, H. Abdalla +256
Very high-energy gamma-rays (VHE, E>100 GeV) propagating over cosmological distances can interact with the low-energy photons of the extragalactic background light (EBL) and produc…
Sizing up the population of gamma-ray binaries
Guillaume Dubus, Nicolas Guillard, Pierre-Olivier Petrucci +1
Gamma-ray binaries are thought to be composed of a young pulsar in orbit around a massive O or Be star, with their gamma-ray emission powered by pulsar spindown. The number of such…
Chasing obscuration in type-I AGN: discovery of an eclipsing clumpy wind at the outer broad-line region of NGC 3783
M. Mehdipour, J. S. Kaastra, G. A. Kriss +21
In 2016 we carried out a Swift monitoring program to track the X-ray hardness variability of eight type-I AGN over a year. The purpose of this monitoring was to find intense obscur…
Constraints on particle acceleration in SS433/W50 from MAGIC and H.E.S.S. observations
MAGIC Collaboration, M. L. Ahnen, S. Ansoldi +408
The large jet kinetic power and non-thermal processes occurring in the microquasar SS 433 make this source a good candidate for a very high-energy (VHE) gamma-ray emitter. Gamma-ra…
Evolution of the reverberation lag in GX 339-4 at the end of an outburst
B. De Marco, G. Ponti, P. O. Petrucci +13
We studied X-ray reverberation lags in the BHXRB GX 339-4 at the end of the 2014-2015 outburst. We analysed data from a XMM-Newton campaign covering the end of the transition from…
Characterising the VHE diffuse emission in the central 200 parsecs of our Galaxy with H.E.S.S
H. E. S. S. Collaboration, :, H. Abdalla +256
The diffuse very high-energy (VHE, > 100 GeV) gamma-ray emission observed in the central 200 pc of the Milky Way by H.E.S.S. was found to follow the dense matter distribution in th…
Particle Acceleration in Pulsar Wind Nebulae: PIC modelling
Lorenzo Sironi, Benoit Cerutti
We discuss the role of particle-in-cell (PIC) simulations in unveiling the origin of the emitting particles in PWNe. After describing the basics of the PIC technique, we summarize…
Towards understanding the physics of collisionless relativistic shocks
Guy Pelletier, Andrei Bykov, Don Ellison +1
Relativistic astrophysical collisionless shocks represent outstanding dissipation agents of the huge power of relativistic outflows produced by accreting black holes, core collapse…
A polarized fast radio burst at low Galactic latitude
E. Petroff, S. Burke-Spolaor, E. F. Keane +35
We report on the discovery of a new fast radio burst, FRB 150215, with the Parkes radio telescope on 2015 February 15. The burst was detected in real time with a dispersion measure…
Accretion-ejection morphology of the microquasar SS433 resolved at sub-au scale
GRAVITY Collaboration, P. -O. Petrucci, I. Waisberg +67
We present the first optical observation at sub-milliarcsecond (mas) scale of the microquasar SS 433 obtained with the GRAVITY instrument on the VLT interferometer. The 3.5 hour ex…
Systematic search for very-high-energy gamma-ray emission from bow shocks of runaway stars
H. E. S. S. Collaboration, :, H. Abdalla +260
Runaway stars form bow shocks by ploughing through the interstellar medium at supersonic speeds and are promising sources of non-thermal emission of photons. One of these objects h…
Prospects for CTA observations of the young SNR RX J1713.7-3946
The CTA Consortium, :, F. Acero +381
We perform simulations for future Cherenkov Telescope Array (CTA) observations of RX~J1713.73946, a young supernova remnant (SNR) and one of the brightest sources ever discovere…
The population of TeV pulsar wind nebulae in the H.E.S.S. Galactic Plane Survey
H. E. S. S. Collaboration, :, H. Abdalla +255
The nine-year H.E.S.S. Galactic Plane Survey (HGPS) yielded the most uniform observation scan of the inner Milky Way in the TeV gamma-ray band to date. The sky maps and source cata…
Fermi/LAT detection of a transient gamma-ray flare in the vicinity of the binary star DG CVn
Alan Loh, Stéphane Corbel, Guillaume Dubus
Solar flares are regularly detected by the Large Area Telescope (LAT) on board the Fermi satellite, however no gamma-ray emission from other stellar eruptions has ever been capture…