Results 141 to 150 of about 4,173,094 (217)

Are the jets accelerated from the disk coronas in some active galactic nuclei?

, 2004
We use a sample of radio-loud active galactic nuclei (AGNs) with estimated central black hole masses to explore AGN jet-formation mechanisms. The jet power of AGNs is estimated from their extended radio luminosity.
Cao, XW
core  

Cosmic ray feedback in galaxies and galaxy clusters: A pedagogical introduction and a topical review of the acceleration, transport, observables, and dynamical impact of cosmic rays. [PDF]

Astron Astrophys Rev, 2023
Ruszkowski M, Pfrommer C.
europepmc   +1 more source

Long-term radio variability of active galactic nuclei at 37 GHz

Aims. We present the results of analysing the long-term radio variability of active galactic nuclei at 37 GHz using data of 123 sources observed in the Aalto University Metsähovi Radio Observatory.
Tornikoski, Merja, M. Tornikoski, Kankkunen, Sofia, Hovatta, Talvikki, Lähteenmäki, Anne, T. Hovatta, S. Kankkunen, A. Lähteenmäki   +7 more
core   +1 more source

WHAT GOVERNS THE BULK VELOCITY OF THE JET COMPONENTS IN ACTIVE GALACTIC NUCLEI?

, 2012
We use a sample of radio-loud active galactic nuclei (AGNs) with measured black hole masses to explore the jet formation mechanisms in these sources. Based on Konigl's inhomogeneous jet model, the jet parameters, such as the bulk motion Lorentz factor ...
Chai, Bo, Cao, Xinwu, Gu, Minfeng
core  

X-ray and UV emission from active galactic nuclei

, 1984
SIGLECopy held by FIZ Karlsruhe; available from UB/TIB Hannover / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische ...
Truemper, J. (eds.), Brinkmann, W., Max-Planck-Institut fuer Physik und Astrophysik, Garching (Germany, F.R.). Inst. fuer Extraterrestrische Physik   +2 more
core  

Imaging black holes: a VLBI success story. [PDF]

Astrophys Space Sci
Zensus JA.
europepmc   +1 more source

Reduced gas accretion onto galaxies due to effects of external giant radio lobes. [PDF]

Proc Natl Acad Sci U S A
Qiu Y, Cen R.
europepmc   +1 more source

Performance of the Sardinia Radio Telescope Using the Dual-Polarized Cryogenic C-Low Receiver in the 4.2-5.6 GHz Frequency Band. [PDF]

Sensors (Basel)
Schirru L, Egron E, Ladu A, Gaudiomonte F, Attoli A, Cabras A, Carboni G, Loi F, Marchegiani P, Marongiu M, Mulas S, Murgia M, Pili M, Pellizzoni A, Poppi S, Schirru F, Vacca V.   +16 more
europepmc   +1 more source

Relation between millimeter wavelengths emission and high-energy emission for active galactic nuclei

, 1998
After comparing the Aux densities of a sample of active galactic nuclei detected fly energetic gamma-ray experiment telescope at 90 and 230 GHz with the gamma-ray emissions detected by Compton Gamma-nay Observatory and x-ray emission, a strong ...
Huang, LH, Jiang, DR, Cao, XW
core  

Video reconstruction of variable VLBI observations with neural fields. [PDF]

Nature
Foschi M, Zhao B, Fuentes A, Bouman KL, Gómez JL, Levis A.   +5 more
europepmc   +1 more source