Results 1 to 10 of about 543 (50)
ENVIRONMENT DENSITY OF A GIANT RADIO STRUCTURE FOR GALAXIES AND QUASARS WITH STEEP RADIO SPECTRA [PDF]
Radio Physics and Radio Astronomy, 2021 Purpose: Estimate of the environment density of giant (with the linear size of about megaparsec) radio structures for galaxies and quasars with steep low-frequency spectra taken from the UTR-2 catalogue. Study of the cosmological evolution of environment
A. P. Miroshnichenko
doaj +1 more source
Wide-Angle-Tail (WAT) Radio Sources
Galaxies, 2023 We review the properties of Wide-Angle-Tail (WAT) radio sources. The WAT radio sources are powerful, bent radio sources typically associated with the dominant galaxy in a cluster or group.
Christopher P. O’Dea, Stefi A. Baum
doaj +1 more source
Radio Emission of Nearby Early-type Galaxies in the Low and Very Low Radio Luminosity Range
The Astrophysical Journal, 2023 We analyze radio continuum emission of early-type galaxies with dynamical measurements of central supermassive black hole (SMBH) masses and well-characterized large-scale environments, but regardless of the exact level of the nuclear activity.
Anna Wójtowicz +4 more
doaj +1 more source
What Drives the Ionized Gas Outflows in Radio-Quiet AGN?
Galaxies, 2023 We review the mechanisms driving the ionized gas outflows in radio-quiet (RQ) AGN. Although it constitutes ∼90% of the AGN population, what drives these outflows in these AGNs remains an open question. High-resolution imaging and integral field unit (IFU)
Mainak Singha +2 more
doaj +1 more source
Offsets between X-Ray and Radio Components in X-Ray Jets: The AtlasX
The Astrophysical Journal Supplement Series, 2023 The X-ray emission mechanism of powerful extragalactic jets—which has important implications for their environmental impacts—is poorly understood. The X-ray/radio positional offsets in the individual features of jets provide important clues.
Karthik Reddy +4 more
doaj +1 more source
Narrow-Line Seyfert 1 Galaxies With Absorbed Jets–Insights From Radio Spectral Index Maps
Frontiers in Astronomy and Space Sciences, 2021 Narrow-line Seyfert 1 (NLS1) galaxies are active galactic nuclei (AGN) believed to be in the early stages of their evolution. A fraction of them have been found to host relativistic jets.
Emilia Järvelä +3 more
doaj +1 more source
Galaxies, 2021 The radiative and jet power in active galactic nuclei is generated by accretion of material on to supermassive galactic-centre black holes. For quasars, where the radiative power is by definition very high, objects with high radio luminosities form 10 ...
Gülay Gürkan +5 more
doaj +1 more source
Simulations of Precessing Jets and the Formation of X-shaped Radio Galaxies
The Astrophysical Journal, 2023 Jet precession is sometimes invoked to explain asymmetries in radio galaxy (RG) jets and “X/S/Z-shaped” RGs, caused by the presence of a binary black hole companion to the source active galactic nucleus or by accretion instabilities.
Chris Nolting, Jay Ball, Tri M. Nguyen
doaj +1 more source
Discovery of synchrotron emission from a YSO jet
EPJ Web of Conferences, 2013 Synchrotron emission at radio wavelengths is commonly found in relativistic jets from active galactic nuclei (AGNs) and microquasars and allows the study of the magnetic field in these kind of jets.
Carrasco-González Carlos +5 more
doaj +1 more source
CORONAL JETS AS A CAUSE OF MICROWAVE NEGATIVE BURSTS
Solar-Terrestrial Physics, 2020 We have investigated the cause of three “isolated” negative radio bursts recorded one after another at several frequencies in the 1–17 GHz range at the Nobeyama Radio Observatory, Ussuriysk Astrophysical Observatory, and Learmonth Solar Observatory on ...
I.V. Kuzmenko
doaj +1 more source