Results 21 to 30 of about 1,194,769 (355)

Offsets between X-Ray and Radio Components in X-Ray Jets: The AtlasX

open access: yesThe 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

Radio jets and gamma-ray emission in radio-silent narrow-line Seyfert 1 galaxies [PDF]

open access: yesAstronomy & Astrophysics, 2018
We have detected six narrow-line Seyfert 1 (NLS1) galaxies at 37 GHz that were previously classified as radio silent and two that were classified as radio quiet.
A. Lähteenmäki   +6 more
semanticscholar   +1 more source

Narrow-Line Seyfert 1 Galaxies With Absorbed Jets–Insights From Radio Spectral Index Maps

open access: yesFrontiers 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

Fast-spinning Black Holes Inferred from Symmetrically Limb-brightened Radio Jets [PDF]

open access: yesAstrophysical Journal, 2018
This paper theoretically investigates the relations between the structure of relativistic jets and produced synchrotron images, by using a steady, axisymmetric force-free jet model.
Kazuya Takahashi   +4 more
semanticscholar   +1 more source

The many lives of active galactic nuclei–II: The formation and evolution of radio jets and their impact on galaxy evolution [PDF]

open access: yes, 2017
We describe new efforts to model radio active galactic nuclei (AGN) in a cosmological context using the Semi-Analytic Galaxy Evolution (SAGE) semi-analytic galaxy model.
M. Raouf   +4 more
semanticscholar   +1 more source

Finding Rare Quasars: VLA Snapshot Continuum Survey of FRI Quasar Candidates Selected from the LOFAR Two-Metre Sky Survey (LoTSS)

open access: yesGalaxies, 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

Ionized-gas Kinematics Along the Large-scale Radio Jets in Type-2 AGNs [PDF]

open access: yes, 2017
To investigate the connection between radioactivity and active galactic nucleus (AGN) outflows, we present a study of ionized-gas kinematics based on an [O iii] λ5007 emission line along the large-scale radio jet for six radio AGNs.
H. A. Le   +8 more
semanticscholar   +1 more source

Relation between winds and jets in radio-loud AGN [PDF]

open access: yesAstronomy & Astrophysics, 2019
We have investigated the relation between the two modes of outflow (wind and jet) in radio-loud active galactic nuclei (AGN). For this study we have carried out a systematic and homogeneous analysis of XMM-Newton spectra of a sample of 16 suitable radio ...
M. Mehdipour, E. Costantini
semanticscholar   +1 more source

A candidate dual AGN in a double-peaked emission-line galaxy with precessing radio jets [PDF]

open access: yes, 2016
We present high resolution radio continuum observations with the Karl G. Jansky Very Large Array at 6, 8.5, 11.5 and 15 GHz of the double-peaked emission-line galaxy 2MASXJ12032061+1319316.
K. Rubinur   +5 more
semanticscholar   +1 more source

Simulations of Precessing Jets and the Formation of X-shaped Radio Galaxies

open access: yesThe 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

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