Results 41 to 50 of about 189,366 (258)
The gamma‐ray emission from young radio galaxies and quasars
Astronomische Nachrichten, Volume 342, Issue 9-10, Page 1176-1179, November-December 2021., 2021 Abstract According to radiative models, radio galaxies are predicted to produce γ‐rays from the earliest stages of their evolution onwards. The study of the high‐energy emission from young radio sources is crucial for providing information on the most energetic processes associated with these sources, the actual region responsible for this emission, as
Giacomo Principe +5 more
wiley +1 more source
The Kiloparsec-scale Influence of the AGN in NGC 1068 with SALT RSS Fabry–Pérot Spectroscopy
The Astronomical Journal, 2023 We present Fabry–Pérot (FP) imaging and longslit spectroscopy of the nearby Seyfert II galaxy NGC 1068 using the Robert Stobie Spectrograph (RSS) on the Southern African Large Telescope (SALT) to observe the impact of the central active galactic nucleus (
Raphael E. Hviding +4 more
doaj +1 more source
Jet propagation through inhomogeneous media and shock ionization
Astronomische Nachrichten, Volume 342, Issue 9-10, Page 1171-1175, November-December 2021., 2021 Abstract In this contribution, we present the first numerical simulations of a relativistic outflow propagating through the inner hundreds of parsecs of its host galaxy, including atomic and ionized hydrogen, and the cooling effects of ionization. Our results are preliminary, but we observe efficient shock ionization of atomic hydrogen in interstellar ...
Manel Perucho +3 more
wiley +1 more source
Astronomische Nachrichten, Volume 342, Issue 9-10, Page 1207-1211, November-December 2021., 2021 Abstract We present a detailed study of the galaxy cluster Abell 795 and of its central Fanaroff‐Riley Type 0 (FR0) radio galaxy. From an archival Chandra observation, we found a dynamically disturbed environment with evidences for sloshing of the intracluster medium.
Francesco Ubertosi +4 more
wiley +1 more source
The impact of AGN on their host galaxies [PDF]
Proceedings of the International Astronomical Union, 2013 AbstractIn these proceedings I briefly: (1) review the impact (or “feedback”) that active galactic nuclei (AGN) are predicted to have on their host galaxies and larger scale environment, (2) review the observational evidence for or against these predictions and (3) present new results on ionised outflows in AGN.
openaire +4 more sources
A Multi-wavelength Survey of AGN in Massive Clusters: AGN Distribution and Host Galaxy Properties [PDF]
Monthly Notices of the Royal Astronomical Society 2014 442 (4):
314-326, 2014 We investigate the effect of environment on the presence and fuelling of Active Galactic Nuclei (AGN) by identifying galaxies hosting AGN in massive galaxy clusters and the fields around them. We have identified AGN candidates via optical variability (178), X-ray emission (74), and mid-IR SEDs (64) in multi- wavelength surveys covering regions centered
arxiv +1 more source
The Astrophysical Journal Letters, 2023 We study the properties of galaxies hosting mid-infrared outbursts in the context of a catalog of 500,000 galaxies from the Sloan Digital Sky Survey. We find that nuclear obscuration, as inferred by the surrounding dust mass, does not correlate with host
Sierra A. Dodd +7 more
doaj +1 more source
Environmental dependence of AGN activity. I.: the effects of host galaxy [PDF]
Astrophys.J.699:1679-1689,2009, 2009 Using a large sample of local galaxies (144,940) with -17.5< Mr <-22 and 0.025< z <0.107, selected from SDSS DR5, we compare AGN host galaxies with non-AGN galaxies at matched luminosity, velocity dispersion, color, color gradient, or concentration index, to investigate how AGN activity is related with galaxy properties.
arxiv +1 more source
AGN and Host Galaxies in the COSMOS Survey [PDF]
Proceedings of the International Astronomical Union, 2010 AbstractThe Cosmological Evolution Survey (COSMOS) is a unique tool for studying low level AGN activity and the co-evolution of galaxies and supermassive black holes. COSMOS involves the largest contiguous region of the sky ever imaged by HST; it includes very complete multiwavelength coverage, and the largest joint samples of galaxy and AGN redshifts ...
Jonathan R. Trump +2 more
openaire +2 more sources
CEERS Key Paper. II. A First Look at the Resolved Host Properties of AGN at 3 < z < 5 with JWST
The Astrophysical Journal Letters, 2023 We report on the host properties of five X-ray-luminous active galactic nuclei (AGN) identified at 3 < z < 5 in the first epoch of imaging from the Cosmic Evolution Early Release Science Survey.
Dale D. Kocevski +59 more
doaj +1 more source