Results 111 to 120 of about 125,183 (220)

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

Modeling Cosmological Evolution of Jetted Seyfert Galaxies for z ≲ 10

The Astrophysical Journal
We use high-resolution cosmological zoom-in simulations to model mechanical and thermal feedback from active galactic nuclei onto the evolution of Seyfert-type galaxies, studying the morphology of central galaxies growing within dark matter (DM) halos ...
Julianne Goddard, Isaac Shlosman, Emilio Romano-Diaz   +2 more
doaj   +1 more source

Intensive Broadband Reverberation Mapping of Fairall 9 with 1.8 yr of Daily Swift Monitoring

The Astrophysical Journal
We present 1.8 yr of near-daily Swift monitoring of the bright, strongly variable Type 1 active galactic nucleus (AGN) Fairall 9. Totaling 575 successful visits, this is the largest such campaign reported to date.
R. Edelson, B. M. Peterson, J. Gelbord, K. Horne, M. Goad, I. McHardy, S. Vaughan, M. Vestergaard   +7 more
doaj   +1 more source

Soft gamma rays from low accreting supermassive black holes and connection to energetic neutrinos. [PDF]

Nat Commun, 2021
Kimura SS, Murase K, Mészáros P.
europepmc   +1 more source

Deep Chandra Observations of NGC 5728. III. Probing the High-resolution X-Ray Morphology and Multiphase Interstellar Medium Interactions in the Circumnuclear Region

The Astrophysical Journal
We present a detailed imaging analysis of 260 ks of subarcsecond resolution Chandra (ACIS-S) observations of the nearby Seyfert 2 galaxy NGC 5728. Our study focuses on the bright and diffuse soft X-ray emission within the galaxy's inner ∼1 kpc.
Anna Trindade Falcão, G. Fabbiano, M. Elvis, A. Paggi, W. P. Maksym   +4 more
doaj   +1 more source

Reverberation mapping of active galactic nuclei: from X-ray corona to dusty torus. [PDF]

iScience, 2021
Cackett EM, Bentz MC, Kara E.
europepmc   +1 more source

Radio Properties of Narrow-Line and Broad-Line Seyfert 1 Galaxies

Galaxies
Narrow-line Seyfert 1 (NLS1) galaxies host active galactic nuclei (AGN) with narrow optical emission lines of the broad-line region. This is often explained with a relatively lower mass of the central supermassive black hole and super-Eddington accretion.
Krisztina É. Gabányi, S. Komossa, Attila Mezősi, Emese Forgács-Dajka, Sándor Frey   +4 more
doaj   +1 more source

Revisiting Disk Winds in Active Galactic Nuclei as an Origin of Cosmic Gamma-Ray and Neutrino Backgrounds

The Astrophysical Journal
The origin of the cosmic neutrino background (CNB) and the cosmic gamma-ray background (CGB) remains uncertain. Accretion disk winds driven by active galactic nuclei (AGNs) have been proposed as possible contributors, but their predicted background ...
Nobuyuki Sakai, Yoshiyuki Inoue, Ellis R. Owen   +2 more
doaj   +1 more source

Spectra of Seyfert galaxies and Seyfert galaxy candidates

The Astrophysical Journal, 1983
D. E. Osterbrock, O. Dahari
openaire   +1 more source

Fast, dust-poor outflows in the local candidate dual AGN MCG-03-34-64 observed with VLT/ERIS

Astronomy & Astrophysics
We present VLT/ERIS integral field unit (IFU) J-band observations of MCG-03-34-64, a nearby (z = 0.0167) Seyfert galaxy hosting a candidate dual active galactic nucleus (AGN) system with a separation of ∼100 pc between the nuclei, which are detected in ...
Lamperti I., Mannucci F., Bertola E., Marconi A., Cresci G., Nardini E., D’Amato Q., Perna M., Rojas-Lilayú A., Bracci C., Braito V., Cataldi E., Ceci M., Chakraborty A., Cicone C., De Rosa A., Feltre A., Ginolfi M., Lusso E., Marconcini C., Moreschini B., Portaluri E., Rubinur K., Scialpi M., Severgnini P., Tozzi G., Trindade Falcão A., Ulivi L., Venturi G., Vignali C., Zanchettin M. V.   +30 more
doaj   +1 more source