Results 11 to 20 of about 39,820 (206)
On the radio dichotomy of active galactic nuclei [PDF]
The Astrophysical Journal, 2016 It is still a mystery why only a small fraction of active galactic nuclei (AGNs) contain relativistic jets. Strong magnetic field is a necessary ingredient for jet formation, however, the advection of the external field in a geometrically thin disk is ...
Cao, Xinwu
core +2 more sources
X-ray Properties of Radio-Selected Dual Active Galactic Nuclei [PDF]
The Astrophysical Journal, 2019 Merger simulations predict that tidally induced gas inflows can trigger kpc-scale dual active galactic nuclei (dAGN) in heavily obscured environments. Previously with the Very Large Array, we have confirmed four dAGN with redshifts between $0.04 < z < 0 ...
Djorgovski, S . G. +4 more
core +5 more sources
Unified Schemes for Radio-Loud Active Galactic Nuclei [PDF]
Publications of the Astronomical Society of the Pacific, 1995 The appearance of active galactic nuclei (AGN) depends so strongly on orientation that our current classification schemes are dominated by random pointing directions instead of more interesting physical properties.
Padovani, Paolo, Urry, C. Megan
core +2 more sources
Gamma Ray Bursts and Radio Loud Active Galactic Nuclei [PDF]
AIP Conference Proceedings, 2003 We believe that the radiation we receive from Gamma-Ray Bursts (GRBs) and radio loud Active Galacti Nuclei (AGNs) originates from the transformation of bulk relativistic motion into random energy. Mechanisms to produce, collimate and accelerates the jets
Ghisellini, G.
core +4 more sources
Radio Properties of Low Redshift Broad Line Active Galactic Nuclei [PDF]
The Astronomical Journal, 2008 The question as to whether the distribution of radio-loudness in active galactic nuclei (AGN) is actually bimodal has been discussed extensively in the literature.
Cirasuolo +25 more
core +2 more sources
VLBI observations of nearby radio loud Active Galactic Nuclei
Journal of Physics: Conference Series, 2008 We present an update of the parsec scale properties of the Bologna Complete Sample consisting of 95 radio sources from the B2 Catalog of Radio Sources and the Third Cambridge Revised Catalog (3CR), with z < 0.1.
Baum S +9 more
core +3 more sources
Revealing two radio active galactic nuclei extremely near PSR J0437$-$4715 [PDF]
Monthly Notices of the Royal Astronomical Society, 2018 Newton's gravitational constant $G$ may vary with time at an extremely low level. The time variability of $G$ will affect the orbital motion of a millisecond pulsar in a binary system and cause a tiny difference between the orbital period-dependent ...
An, Tao +11 more
core +3 more sources
A 3.5mm Polarimetric Survey of Radio-loud Active Galactic Nuclei [PDF]
The Astrophysical Journal Supplement Series, 2010 We present the results from the first large (>100 source) 3.5 mm polarimetric survey of radio loud active galactic nuclei (AGN). The I, Q, U, and V Stokes parameter observations were performed with the XPOL polarimeter at the IRAM 30m Telescope.
Agudo, I. +3 more
core +2 more sources
Origin of Radio Emission from Nearby Low-Luminosity Active Galactic Nuclei [PDF]
The Astrophysical Journal, 2004 We use the observational data in radio, optical and X-ray wavebands, for a sample of active galactic nuclei (AGNs) with measured black hole masses, to explore the origin of radio emission from nearby low-luminosity active galactic nuclei (LLAGNs).
Falcke H. +8 more
core +2 more sources
Investigating the Star Formation Characteristics of Radio Active Galactic Nuclei
The Astrophysical JournalThe coevolution of supermassive black holes and their host galaxies represents a fundamental question in astrophysics. One approach to investigating this question involves comparing the star formation rates (SFRs) of active galactic nuclei (AGNs) with ...
Bojun Zhang +7 more
doaj +4 more sources