activity
20182026
most citedFirst Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way

1.9k citations · 5.3k across the 43 of their papers we have counts for

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51 papers · 1 filter

astro-ph.HE2026

J0011+3443: a GPS compact symmetric object, gravitational lens, or dual AGN?

Efthalia Traianou, Tingting Liu, Roman Gold +1

We present new multi-frequency VLBA observations of \object{J0011+3443} (TXS\,0008+344, ) at 2.3, 4.9, 8.5, and, for the first time, 23.6\,GHz. The source consists of two c…

astro-ph.HE2026

The Emerging Population of High-energy Emitting Radio Galaxies

G. Bruni, V. S. Paliya, D. J. Saikia +22

High-energy emission from radio galaxies provides a unique laboratory to study the connection between accretion, jet formation, and particle acceleration in active galactic nuclei…

astro-ph.HE2026

Broadband multiwavelength properties of the archetypal blazar 3C 279 during the 2017 Event Horizon Telescope campaign

G. Principe, J. C. Algaba, E. Aviano +529

The archetypal blazar 3C 279 hosts a prominent relativistic jet and exhibits strong broadband variability across the electromagnetic spectrum. In April 2017, the Event Horizon Tele…

astro-ph.HE2026

Unique Science Opportunities for Space VLBI Systems with the SKA Telescopes

Y. Y. Kovalev, G. Bruni, T. An +17

To date, two dedicated Space Very Long Baseline Interferometry (SVLBI) missions, the VLBI Space Observatory Programme (VSOP) and RadioAstron, have provided groundbreaking insights…

astro-ph.HE2026

A Ring of Fire Orphan γ-Ray Flare in the Neutrino Candidate 3C 120

E. Traianou, G. Bruni, J. Rodi +7

We present 43\,GHz VLBI observations of the radio galaxy 3C~120 during its brightest -ray outburst (March 2018), recently associated with the IceCube neutrino alert IC-180213A.…

astro-ph.HE2026

Where within the 3C 84 jet are -rays produced?

Georgios F. Paraschos, Ioannis Liodakis, Svetlana Jorstad +49

The location of -ray creation and emission within extra-galactic jets is a matter of active debate. One particularly well-suited source to pinpoint the location is the nearby, b…