Results 31 to 40 of about 159,044 (227)
The impact of young radio jets traced by cold molecular gas
Astronomische Nachrichten, Volume 342, Issue 9-10, Page 1135-1139, November-December 2021., 2021 Abstract Ranging from a few pc to hundreds of kpc in size, radio jets have, during their evolution, an impact on their gaseous environment on a large range of scales. While their effect on larger scales is well established, it is now becoming clear that they can also strongly affect the interstellar medium (ISM) inside the host galaxy.
Raffaella Morganti +3 more
wiley +1 more source
Extremely inverted peaked spectrum radio sources
Astronomische Nachrichten, Volume 342, Issue 9-10, Page 1126-1129, November-December 2021., 2021 Abstract We report our ongoing search for extremely inverted spectrum compact radio galaxies, for which the defining feature in the radio spectrum is not the spectral peak, but instead the slope of the spectrum () in the high‐opacity (i.e., lower frequency) part of the radio spectrum.
Mukul Mhaskey +2 more
wiley +1 more source
New Astronomy Reviews, 2008 A series of four lectures presented at the 2007 summer school on "Active Galactic Nuclei at the highest angular resolution: theory and observations" held in Torun, Poland.
openaire +3 more sources
The bulge-disc decomposition of AGN host galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2016 We present the results from a study of the morphologies of moderate luminosity X-ray selected AGN host galaxies in comparison to a carefully mass-matched control sample at 0.5 < z < 3 in the CANDELS GOODS-S field. We apply a multi-wavelength morphological decomposition analysis to these two samples and report on the differences between the ...
V. A. Bruce +5 more
openaire +4 more sources
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
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
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
Looking for Signatures of AGN Feedback in Radio-Quiet AGN
Galaxies, 2023 In this article, we discuss the state of “AGN feedback” in radio-quiet (RQ) AGN. This study involves heterogeneous samples of nearby Seyfert and LINER galaxies as well as quasi-stellar objects (QSOs) that have been observed at low radio frequencies (few ∼
Preeti Kharb, Sasikumar Silpa
doaj +1 more source