Results 81 to 90 of about 576 (185)

Variability-selected Low-luminosity Active Galactic Nuclei Candidates in the 7 Ms Chandra Deep Field-South [PDF]

, 2018
N Ding, Birong Luo, W. N. Brandt, M. Paolillo, G Yang, B. D. Lehmer, O. Shemmer, D. P. Schneider, P. Tozzi, Yongquan Xue, Zheng Xc, Q.S. Gu, A. M. Koekemoer, C. VIGNALI, F. Vito, J.‐X. WANG   +15 more
openalex   +1 more source

Very Long Baseline Interferometry Detection of an Active Radio Source Potentially Driving 100 kpc Scale Emission in the Ultraluminous Infrared Galaxy IRAS F01004–2237

The Astrophysical Journal
The nearby ultraluminous infrared galaxy (ULIRG) IRAS F01004−2237 exhibits 100 kpc scale continuum emission at radio wavelengths. The absence of extended X-ray emission in IRAS F01004−2237 has suggested an active galactic nucleus (AGN) origin for the ...
Takayuki J. Hayashi, Yoshiaki Hagiwara, Masatoshi Imanishi   +2 more
doaj   +1 more source

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

Misaligned External Gas Acquisition Boosts Central Black Hole Activities

The Astrophysical Journal
One important question in active galactic nuclei (AGN) is how gas is brought down to the galaxy center. Both internal secular evolution (torque induced by nonaxisymmetric galactic structures such as bars) and external processes (e.g., mergers or ...
Yuren Zhou, Yanmei Chen, Yong Shi, Guinevere Kauffmann, Junfeng Wang, Gaoxiang Jin, Lan Wang, Shuai Feng, Min Bao   +8 more
doaj   +1 more source

The advection-dominated accretion flow+thin accretion disk model for two low-luminosity active galactic nuclei: M81 and NGC 4579 [PDF]

, 2009
Yadi Xu, Xinwu Cao
openalex   +1 more source

Search for High-excitation Emission Lines from a Quasar-scale Active Nucleus in Arp 220

The Astrophysical Journal
The late-stage galaxy merger and prototypical ultraluminous infrared galaxy (ULIRG) Arp 220 is probed using the JWST Mid Infrared Instrument medium-resolution spectrometer to search for multiple diagnostic active galactic nuclei (AGN) emission lines in ...
Charles E. Goldberg, Victorine A. Buiten, George H. Rieke, Almudena Alonso-Herrero, A. Paggi, Paul van der Werf, Meredith A. Stone, Jane E. Morrison, Stacey Alberts, Dan Dicken, Gillian Wright   +10 more
doaj   +1 more source

The diffuse gamma-ray flux from clusters of galaxies. [PDF]

Nat Commun, 2023
Hussain S, Alves Batista R, de Gouveia Dal Pino EM, Dolag K.   +3 more
europepmc   +1 more source

Active galactic nuclei dust tori at low and high luminosities [PDF]

, 2007
S. F. Hönig, T. Beckert
openalex   +1 more source

Revision of Two-temperature Magnetically Arrested Flows onto a Black Hole

The Astrophysical Journal
We revisit the radiative properties of 3D general relativistic magnetohydrodynamics (GRMHD) two-temperature magnetically arrested disk (MAD) models in which electrons are heated by a magnetic turbulent cascade.
M. Mościbrodzka
doaj   +1 more source

Discovery of five low-luminosity active galactic nuclei at the centre of the Perseus cluster [PDF]

, 2016
Songyoun Park, Jun Yang, J. B. R. Oonk, Z. Paragi   +3 more
openalex   +1 more source