Results 11 to 20 of about 62,437 (252)

Cosmic Evolution of Nearby Radio Active Galactic Nuclei

Journal of Physics: Conference Series, 2019
The exact formation mechanism of massive galaxy in the universe still become an open question in modern astrophysics. Radio emission from active galactic nucleus (AGN) is known to be suppressing stellar growth in the most massive galaxies, thus becoming ...
I.T Andika, M. I. Arifyanto, A N Istiqomah, Shinta Nur Amalina, Aprilia, Muhamad Irfan Hakim   +5 more
openalex   +2 more sources

Revealing two radio active galactic nuclei extremely near PSR J0437$-$4715 [PDF]

, 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, Deller, Adam, Ding, Hao, Guo, Li, Hong, Xiaoyu, Li, Zhixuan, Paragi, Zsolt, Reynolds, Cormac, Wang, Jiancheng, Xia, Bo, Yan, Zhen, Yang, Jun   +11 more
core   +2 more sources

Gamma Ray Bursts and Radio Loud Active Galactic Nuclei [PDF]

, 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   +5 more sources

The jet-disc connection: evidence for a reinterpretation in radio loud and radio quiet active galactic nuclei [PDF]

, 2013
To constrain models of the jet-disc connection, we explore Eddington ratios reported in Foschini (2011) and interpret them in relation to the values in Sikora et al.
Garofalo, David
core   +5 more sources

X-ray properties of coronal emission in radio quiet active galactic nuclei [PDF]

Frontiers in Astronomy and Space Sciences
Active galactic nuclei (AGN) are powerful sources of panchromatic radiation. All AGN emit in X-rays, contributing around 5%–10% of the AGN bolometric luminosity.
Sibasish Laha, Sibasish Laha, Sibasish Laha, Claudio Ricci, Claudio Ricci, John C. Mather, Ehud Behar, Luigi Gallo, Frederic Marin, Rostom Mbarek, Rostom Mbarek, Amelia Hankla   +11 more
doaj   +2 more sources

The Evolution of Radio Loud Active Galactic Nuclei as a Function of Black Hole Spin [PDF]

, 2010
Recent work on the engines of active galactic nuclei jets suggests their power depends strongly and perhaps counter-intuitively on black hole spin. We explore the consequences of this on the radio-loud population of active galactic nuclei and find that ...
Allen, Antonuccio-Delogu, Barnes, Baum, Beloborodov, Benson, Berti, Bicknell, Blandford, Blandford, Blandford, Blum, Bogovalov, Brenneman, Bridle, Cao, D. A. Evans, D. Garofalo, Daly, Daly, De Young, Donato, Evans, Evans, Fabian, Fanaroff, Ferrarese, Garofalo, Garofalo, Gebhardt, Ghisellini, Gopal-Krishna, Grandi, Hardcastle, Hardcastle, Hardee, Heywood, Hughes, Kaiser, King, King, Kormendy, Kormendy, Kuncic, Kuncic, Magorrian, Mangalam, Marchesini, Marconi, McClintock, McKinney, McKinney, McKinney, McNamara, Meier, Meier, Meier, Miller, Moderski, Moderski, Nakamura, Narayan, Neilsen, Nemmen, Nesvadba, Novikov, O'Dea, Ogle, R. M. Sambruna, Rees, Reeves, Reeves, Reynolds, Reynolds, Reynolds, Sambruna, Smolcic, Smolcic, Tchekhovskoy, Tchekhovskoy, Thorne, Tremaine, Volonteri, Wilms, Wilson, Zoghbi   +85 more
core   +2 more sources

Monitoring Of Jets in Active Galactic Nuclei with VLBA Experiments. XVIII. Kinematics and Inner Jet Evolution of Bright Radio-loud Active Galaxies [PDF]

Astrophysical Journal, 2021
We have analyzed the parsec-scale jet kinematics of 447 bright radio-loud active active galactic nuclei (AGN), based on 15 GHz Very Long Baseline Array (VLBA) data obtained between 1994 August 31 and 2019 August 4.
M. Lister, D. Homan, K. Kellermann, Y. Y. Kovalev, A. Pushkarev, E. Ros, T. Savolainen   +6 more
semanticscholar   +1 more source

Search and Characterization of Remnant Radio Galaxies in the XMM-LSS Deep Field

The Astrophysical Journal, 2023
The remnant phase of a radio galaxy is characterized by the cessation of active galactic nuclei activity, resulting in the jets ceasing to feed plasma to the radio lobes.
Sushant Dutta, Veeresh Singh, C. H. Ishwara Chandra, Yogesh Wadadekar, Abhijit Kayal, Ian Heywood   +5 more
doaj   +1 more source

The Rapid Optical Variability of the Nearby Radio-loud AGN Pictor A: Introducing the Quaver Pipeline for AGN Science with TESS

The Astrophysical Journal, 2023
The sampling strategy of the Transiting Exoplanet Survey Satellite (TESS) makes TESS light curves extremely valuable for investigating the high cadence optical variability of active galactic nuclei (AGN).
Krista Lynne Smith, Lia F. Sartori
doaj   +1 more source

The role of environment in the observed Fundamental Plane of radio active galactic nuclei [PDF]

Monthly notices of the Royal Astronomical Society, 2018
The optical Fundamental Plane of black hole activity relates radio continuum luminosity of active galactic nuclei (AGNs) to [OⅠⅠⅠ] luminosity and black hole mass. We examine the environments of low-redshift (𝓏 
S. Shabala
semanticscholar   +1 more source