Results 91 to 100 of about 102,319 (250)

The Nature of Quasars and the Active Nuclei of Galaxies [PDF]

, 1977
Виталий Л. Гинзбург, L.M. Ozernoi   +1 more
openalex   +1 more source

The role of active galactic nuclei in galaxy formation

, 2009
We use Monte-Carlo Markov chain techniques to constrain acceptable parameter regions for the Munich L-Galaxies semi-analytic galaxy formation model.
Henriques, B. M., Thomas, P. A.
core   +1 more source

Investigating Little Red Dots with UV Excess: Are They the High-redshift Siblings of Blue Hot Dust-obscured Galaxies?

The Astrophysical Journal
Little red dots (LRDs), newly identified compact and dusty galaxies with an unexpectedly high number density observed by JWST, have an unusual “V-shaped” rest-frame UV to near-infrared spectral energy distribution (SED).
Lulu Bao, Chao-Wei Tsai, Jingwen Wu, Tao Wang, Guodong Li, Roberto J. Assef, Tanio Diaz-Santos, Peter R. M. Eisenhardt, Daniel Stern, Andrew W. Blain   +9 more
doaj   +1 more source

The Nature of the Energy Source in Radio Galaxies and Active Galactic Nuclei [PDF]

, 1982
F. Pacini, M. Salvati
openalex   +1 more source

Some Implications of Ultraviolet Observations of Quasars and Active Galaxies [PDF]

, 1980
A. F. Davidsen
openalex   +1 more source

The Seyfert Population in the Local Universe

, 2003
The magnitude-limited catalog of the Southern Sky Redshift Survey (SSRS2), is used to characterize the properties of galaxies hosting Active Galactic Nuclei.
Christopher N. A. Willmer, Efstathiou G., Felten J. E., Kelm B., Kohler T., Kollatschny W., Laurikainen E., Laurikainen E., Maddox S. J., Maia M. A. G., Marcio A. G. Maia, Noguchi M., Petrosian A. R., Rodolfo S. Machado   +13 more
core   +1 more source

Accretion and Outflow in Active Galaxies [PDF]

Proceedings of the International Astronomical Union, 2009
AbstractI review accretion and outflow in active galactic nuclei. Accreti4on appears to occur in a series of very small-scale, chaotic events, whose gas flows have no correlation with the large-scale structure of the galaxy or with each other. The accreting gas has extremely low specific angular momentum and probably represents only a small fraction of
openaire   +4 more sources

Gamma ray constraints on annihilation in active galaxies [PDF]

, 1981
A. J. Allen
openalex   +1 more source

Active galaxies and the diffuse Gamma-Ray background [PDF]

A model for the origin of relativistic particles and gamma rays in active galactic nuclei and quasars, together with recent HEAO-1 observations of the spectra of active galaxies from 2 to 165 keV, provide the basis for a reexamination of the nature of ...
Kazanas, D., Protheroe, R. J.
core   +1 more source

Unity and Diversity Among Jets in Active Galaxies [PDF]

, 1987
William C. Keel
openalex   +1 more source