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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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37 papers · 2 filters
Unveiling the origin of the optical/UV emission from the Galactic ULX Swift J0243.6+6124 during its 2017-2018 giant outburst
J. Alfonso-Garzón, J. van den Eijnden, N. P. M. Kuin +8
From late September 2017 to February 2018, the Be X-ray binary (BeXB) Swift J0243.6+6124 underwent an unprecedently bright giant outburst. The reported X-ray luminosities were so h…
First M87 Event Horizon Telescope Results. IX. Detection of Near-horizon Circular Polarization
The Event Horizon Telescope Collaboration
Event Horizon Telescope (EHT) observations have revealed a bright ring of emission around the supermassive black hole at the center of the M87 galaxy. EHT images in linear polariza…
Polarimetric Geometric Modeling for mm-VLBI Observations of Black Holes
Freek Roelofs, Michael D. Johnson, Andrew Chael +4
The Event Horizon Telescope (EHT) is a millimeter very long baseline interferometry (VLBI) array that has imaged the apparent shadows of the supermassive black holes M87* and Sagit…
First Sagittarius A* Event Horizon Telescope Results. VI: Testing the Black Hole Metric
The Event Horizon Telescope Collaboration
Astrophysical black holes are expected to be described by the Kerr metric. This is the only stationary, vacuum, axisymmetric metric, without electromagnetic charge, that satisfies…
First Sagittarius A* Event Horizon Telescope Results. III: Imaging of the Galactic Center Supermassive Black Hole
The Event Horizon Telescope Collaboration
We present the first event-horizon-scale images and spatiotemporal analysis of Sgr A* taken with the Event Horizon Telescope in 2017 April at a wavelength of 1.3 mm. Imaging of Sgr…
First Sagittarius A* Event Horizon Telescope Results. V. Testing Astrophysical Models of the Galactic Center Black Hole
The Event Horizon Telescope Collaboration
In this paper, we provide a first physical interpretation for the Event Horizon Telescope (EHT)'s 2017 observations of Sgr A*. Our main approach is to compare resolved EHT data at…
First Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way
The Event Horizon Telescope Collaboration
We present the first Event Horizon Telescope (EHT) observations of Sagittarius A* (Sgr A), the Galactic center source associated with a supermassive black hole. These observati…
First Sagittarius A* Event Horizon Telescope Results. IV. Variability, Morphology, and Black Hole Mass
The Event Horizon Telescope Collaboration
In this paper we quantify the temporal variability and image morphology of the horizon-scale emission from Sgr A*, as observed by the EHT in 2017 April at a wavelength of 1.3 mm. W…
First Sagittarius A* Event Horizon Telescope Results. II. EHT and Multi-wavelength Observations, Data Processing, and Calibration
The Event Horizon Telescope Collaboration
We present Event Horizon Telescope (EHT) 1.3 mm measurements of the radio source located at the position of the supermassive black hole Sagittarius A* (Sgr A*), collected during th…
Filamentary structures as the origin of blazar jet radio variability
Antonio Fuentes, José L. Gómez, José M. Martí +22
Supermassive black holes at the centre of active galactic nuclei power some of the most luminous objects in the Universe. Typically, very long baseline interferometric (VLBI) obser…
Neutron stars in accreting systems -- signatures of the QCD phase transition
Noshad Khosravi Largani, Tobias Fischer, Shota Shibagaki +2
Neutron stars (NS) that are born in binary systems with a main-sequence star companion can experience mass transfer, resulting in the accumulation of material at the surface of the…
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…
Bayesian real-time classification of multi-messenger electromagnetic and gravitational-wave observations
Marina Berbel, Miquel Miravet-Tenés, Sushant Sharma Chaudhary +7
Because of the electromagnetic radiation produced during the merger, compact binary coalescences with neutron stars may result in multi-messenger observations. In order to follow u…
Galactic Gamma-Ray Diffuse Emission at TeV energies with HAWC Data
R. Alfaro, C. Alvarez, J. C. Arteaga-Velazquez +77
The Galactic gamma-ray diffuse emission (GDE) is emitted by cosmic rays (CRs), ultra-relativistic protons and electrons, interacting with gas and electromagnetic radiation fields i…
Self-consistent MHD simulation of jet launching in a neutron star - white dwarf merger
J. Moran-Fraile, F. K. Roepke, R. Pakmor +4
The merger of a white dwarf (WD) and a neutron star (NS) is a relatively common event that will produce an observable electromagnetic signal. Furthermore, the compactness of these…
Solving the Pulsar Equation using Physics-Informed Neural Networks
Petros Stefanou, Jorge F. Urbán, José A. Pons
In this study, Physics-Informed Neural Networks (PINNs) are skilfully applied to explore a diverse range of pulsar magneto-spheric models, specifically focusing on axisymmetric cas…
Searches for neutrinos in the direction of radio-bright blazars with the ANTARES telescope
ANTARES Collaboration, A. Albert, S. Alves +162
Active galaxies, especially blazars, are among the most promising neutrino source candidates. To date, ANTARES searches for these objects considered GeV-TeV -ray bright blazars.…
Prospects for combined analyses of hadronic emission from -ray sources in the Milky Way with CTA and KM3NeT
T. Unbehaun, L. Mohrmann, S. Funk +271
The Cherenkov Telescope Array and the KM3NeT neutrino telescopes are major upcoming facilities in the fields of -ray and neutrino astronomy, respectively. Possible simultaneous…
The internal Faraday screen of Sagittarius A*
Maciek Wielgus, Sara Issaoun, Ivan Marti-Vidal +5
We report on 85-101 GHz light curves of the Galactic Center supermassive black hole, Sagittarius A* (Sgr A*), observed in April 2017 with the Atacama Large Millimeter/submillimeter…
Assessment of a new sub-grid model for magnetohydrodynamical turbulence. II. Kelvin-Helmholtz instability
Miquel Miravet-Tenés, Pablo Cerdá-Durán, Martin Obergaulinger +1
The modelling of astrophysical systems such as binary neutron star mergers or the formation of magnetars from the collapse of massive stars involves the numerical evolution of magn…
Deepening gamma-ray point-source catalogues with sub-threshold information
Aurelio Amerio, Francesca Calore, Pasquale Dario Serpico +1
We propose a novel statistical method to extend Fermi-LAT catalogues of high-latitude -ray sources below their nominal threshold. To do so, we rely on a recent determination of…
Rapid X-ray variability of the gamma-ray binary LS I+61 303
J. Lopez-Miralles, Sara E. Motta, S. Migliari +1
The gamma-ray binary LS I+61 303 has been widely monitored at different wavelengths since its discovery more than sixty years ago. However, the nature of the compact object and the…
On the large scale morphology of Hercules A: destabilized hot jets?
Manel Perucho, Jose López-Miralles, Nectaria A. B. Gizani +2
Extragalactic jets are generated as bipolar outflows at the nuclei of active galaxies. Depending on their morphology, they are classified as Fanaroff-Riley type I (centre-brightene…
Multi-messenger observations of core-collapse supernovae: Exploiting the standing accretion shock instability
Marco Drago, Haakon Andresen, Irene Di Palma +2
The gravitational wave (GW) and neutrino signals from core-collapse supernovae (CCSNe) are expected to carry pronounced imprints of the standing accretion shock instability (SASI).…