Results 91 to 100 of about 37,453 (224)
Luminous x-ray agn in clusters of galaxies [PDF]
, 2010 We present a study of X-ray AGN overdensities in 16 Abell clusters, within the redshift range 0.073 0.995 level, as indicated by an appropriate t-student test. We conclude that the triggering of luminous X-ray AGN in rich clusters is strongly suppressed.
Manolis Plionis
core
Precision cosmology from X-ray AGN clustering [PDF]
, 2009 We place tight constraints on the main cosmological parameters of spatially flat cosmological models by using the recent angular clustering results of XMM–Newton soft (0.5–2 keV) X-ray sources, which have a redshift distribution with a median of z ∼ 1 ...
Manolis Plionis
core
AGN-enhanced outflows of low-ionization gas in star-forming galaxies at 1.7
, 2017 To reproduce the properties of galaxies in the local Universe, as well as the scaling relations between host galaxies and black holes properties, many galaxy formation models invoke the presence of fast and energetic winds extending over galaxy scales ...
Cimatti, Andrea +7 more
core +1 more source
The Astrophysical JournalAt cosmic noon ( z ≈ 2–3), both star formation and active galactic nucleus (AGN) activity peaked, each playing a significant role in ionizing interstellar gas on galaxy-wide scales. The spatial distribution of this ionized gas provides a direct probe of
Sophie Lebowitz +9 more
doaj +1 more source
SDSS J125417.98+274004.6: An X-ray Detected Minor Merger Dual AGN [PDF]
In this paper, we present the discovery of a dual AGN in a $\sim$11:1 minor merger between the galaxy SDSS J125417.98+274004.6 and its unnamed dwarf satellite. We calculated stellar masses of the primary and secondary galaxy to be 2.5$\times$10$^{10}$M$_{
Olivia J. Holmes +7 more
core +1 more source
Galaxies Lighting Up: Discovery of Seventy New Turn-on Changing-look Active Galactic Nuclei
The Astrophysical Journal“Changing-look active galactic nuclei” (CL AGN) show dramatic, rapid changes in optical/UV continuum and broad-line emission. The majority of CL AGN have been found dimming as “turn-off” CL AGN because most selection methods start from samples of ...
Qian Yang +5 more
doaj +1 more source
Active Galactic Nuclei Selection and Demographics: A New Age with JWST/MIRI
The Astrophysical JournalUnderstanding the coevolution of supermassive black holes and their host systems requires a comprehensive census of active galactic nuclei (AGNs) behavior across a wide range of redshift, luminosity, obscuration level, and galaxy properties.
Jianwei Lyu +21 more
doaj +1 more source
Evidence of Feedback Effects in Low-luminosity Active Galactic Nuclei Revealed by JWST Spectroscopy
The Astrophysical Journal LettersThis Letter presents an analysis of the infrared (∼3–28 μ m) spectra extracted from the nuclear ( r
Lulu Zhang +19 more
doaj +1 more source