output
19932026
most citedThe Gaia mission

7.1k citations

Showing 2023Show all

125 papers · 1 filter

astro-ph.GA2023

EMU/GAMA: Radio detected galaxies are more obscured than optically selected galaxies

U. T. Ahmed, A. M. Hopkins, J. Ware +13

We demonstrate the importance of radio selection in probing heavily obscured galaxy populations. We combine Evolutionary Map of the Universe (EMU) Early Science data in the Galaxy…

astro-ph.GA2023★ 18 cited

Ubiquitous radio emission in quasars: predominant AGN origin and a connection to jets, dust and winds

G. Calistro-Rivera, D. M. Alexander, C. M. Harrison +16

We present a comprehensive study of the physical origin of radio emission in optical quasars at redshifts z < 2.5. We focus particularly on the associations between compact radio e…

astro-ph.GA2023★ 1 cited

Radio jets in NGC 1068 with e-MERLIN and VLA: structure and morphology

Isaac M. Mutie, David Williams-Baldwin, Robert J. Beswick +7

We present new high-sensitivity e-MERLIN and VLA radio images of the prototypical Seyfert 2 galaxy NGC 1068 at 5, 10 and 21 GHz. We image the radio jet, from the compact components…

astro-ph.GA2023★ 17 cited

Illuminating the Dark Side of Cosmic Star Formation III: Building the largest homogeneous sample of Radio-Selected Dusty Star-Forming Galaxies in COSMOS with PhoEBO

Fabrizio Gentile, Margherita Talia, Meriem Behiri +14

In the last decades, an increasing scientific interest has been growing in the elusive population of "dark" (i.e. lacking an optical/NIR counterpart) Dusty Star-Forming Galaxies (D…

astro-ph.HE2023★ 7 cited

Unveiling the Bent Jet Structure and Polarization of OJ 287 at 1.7 GHz with Space VLBI

Ilje Cho, José L. Gómez, Rocco Lico +16

We present total intensity and linear polarization images of OJ287 at 1.68GHz, obtained through space-based VLBI observations with RadioAstron on April 16, 2016. The observations w…

astro-ph.IM2023★ 4 cited

Bayesian estimation of cross-coupling and reflection systematics in 21cm array visibility data

Geoff G. Murphy, Philip Bull, Mario G. Santos +76

Observations with radio arrays that target the 21-cm signal originating from the early Universe suffer from a variety of systematic effects. An important class of these are reflect…

astro-ph.HE2023★ 93 cited

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…

astro-ph.HE2023★ 12 cited

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…

astro-ph.CO2023

A Deep uGMRT view of the ultra steep spectrum radio halo in Abell 521

Ramananda Santra, Ruta Kale, Simona Giacintucci +8

We present the first detailed analysis of the ultra-steep spectrum radio halo in the merging galaxy cluster Abell 521, based on upgraded Giant Metrewave Radio telescope (uGMRT) obs…

astro-ph.HE2023★ 681 cited

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…

astro-ph.HE2023★ 450 cited

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…

astro-ph.HE2023★ 548 cited

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…

astro-ph.HE2023★ 1.9k cited

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…

astro-ph.HE2023★ 370 cited

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…

astro-ph.HE2023★ 376 cited

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…

astro-ph.HE2023★ 51 cited

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…

astro-ph.HE2023★ 8 cited

The expansion of the GRB 221009A afterglow

S. Giarratana, O. S. Salafia, M. Giroletti +14

We observed -ray burst (GRB) 221009A using very long baseline interferomety (VLBI) with the European VLBI Network (EVN) and the Very Long Baseline Array (VLBA), over a period sp…

astro-ph.CO2023

Euclid preparation. XXXIX. The effect of baryons on the Halo Mass Function

Euclid Collaboration, T. Castro, S. Borgani +220

The Euclid photometric survey of galaxy clusters stands as a powerful cosmological tool, with the capacity to significantly propel our understanding of the Universe. Despite being…

astro-ph.GA2023★ 8 cited

Weak-Lensing Analysis of the Complex Cluster Merger Abell 746 with Subaru/Hyper Suprime-Cam

Kim HyeongHan, Hyejeon Cho, M. James Jee +15

The galaxy cluster Abell 746 (A746; =0.214), featuring a double radio relic system, two isolated radio relics, a possible radio halo, disturbed V-shaped X-ray emission, and intr…

astro-ph.CO2023★ 1 cited

Observing galaxy clusters and the cosmic web through the Sunyaev Zel'dovich effect with MISTRAL

E. S. Battistelli, E. Barbavara, P. de Bernardis +33

Galaxy clusters and surrounding medium, can be studied using X-ray bremsstrahlung emission and Sunyaev Zel'dovich (SZ) effect. Both astrophysical probes, sample the same environmen…

astro-ph.HE2023★ 109 cited

Precessing jet nozzle connecting to a spinning black hole in M87

Yuzhu Cui, Kazuhiro Hada, Tomohisa Kawashima +76

The nearby radio galaxy M87 offers a unique opportunity to explore the connections between the central supermassive black hole and relativistic jets. Previous studies of the inner…

astro-ph.CO2023★ 10 cited

A multishock scenario for the formation of radio relics

David C. Smolinski, Denis Wittor, Franco Vazza +1

Radio relics are giant sources of diffuse synchrotron radio emission in the outskirts of galaxy clusters that are associated with shocks in the intracluster medium. Still, the orig…

astro-ph.CO2023★ 8 cited

Euclid preparation. LII. Forecast impact of super-sample covariance on 3x2pt analysis with Euclid

Euclid Collaboration, D. Sciotti, S. Gouyou Beauchamps +221

Deviations from Gaussianity in the distribution of the fields probed by large-scale structure surveys generate additional terms in the data covariance matrix, increasing the uncert…

astro-ph.GA2023★ 12 cited

The effect of cluster dynamical state on ram-pressure stripping

A. C. C. Lourenço, Y. L. Jaffé, B. Vulcani +14

Theoretical and observational studies have suggested that ram-pressure stripping by the intracluster medium can be enhanced during cluster interactions, boosting the formation of t…