Results 91 to 100 of about 152,801 (176)

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

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

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

Schilderung der merkwürdigsten Ereignisse zur Zeit des Bombardements der Stadt Zittau, am 23. July 1757, nach handschriftlichen Aufzeichnungen glaubwürdiger Männer / Als ein historisches Denkmal bearbeitet und verfaßt von Karl Friedrich Kretschmann, Amts-Advokat

Vorlageform des Erscheinungsvermerks: Zittau, gedruckt bey Johann Gottfried ...
Kretschmann, Karl Friedrich
core   +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

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

Narrow-Line Seyfert 1 Galaxies

, 2000
The primary work during this year has been the analysis and interpretation of our HST spectra from two extreme Narrow-line Seyfert 1 galaxies (NLS1s) Infrared Astronomy Satellite (IRAS) 13224-3809 and 1H 0707-495.
Leighly, Karen M.
core  

The Disk Wind Contribution to the Gamma-Ray Emission from the Nearby Seyfert Galaxy GRS 1734−292

The Astrophysical Journal
Radio-quiet Seyfert galaxies have been detected in GeV gamma rays by the Fermi Large Area Telescope (LAT), but the origin of much of this emission is unclear.
Nobuyuki Sakai, Tomoya Yamada, Yoshiyuki Inoue, Ellis R. Owen, Tomonari Michiyama, Ryota Tomaru, Yasushi Fukazawa   +6 more
doaj   +1 more source

The extent of ionization in simulations of radio-loud AGNs impacting kpc gas discs. [PDF]

Mon Not R Astron Soc, 2022
Meenakshi M, Mukherjee D, Wagner AY, Nesvadba NPH, Morganti R, Janssen RMJ, Bicknell GV.   +6 more
europepmc   +1 more source

Stellar populations of local infrared-selected galaxies

, 2009
International audienceThe stellar populations of 849 local infrared-selected galaxies from SDSS and IRAS (including 419 star-forming galaxies, 326 composite galaxies, 35 Seyfert 2s, and 69 LINERs in 4 spectral classes) are studied by using STARLIGHT ...
Hammer, François, Zhong, Guo-Hu, Chen, Xiao-Yan, Zhao, Y. H., Liang, Yan-Chun, X. Y. Chen, F. Hammer, G. H. Zhong, Y. C. Liang, Y. H. Zhao   +9 more
core   +1 more source