Results 31 to 40 of about 643 (219)
EVIDENCE OF PARSEC-SCALE JETS IN LOW-LUMINOSITY ACTIVE GALACTIC NUCLEI [PDF]
The Astrophysical Journal, 2014 The nuclear radio emission of low-luminosity active galactic nuclei (LLAGN) is often associated with unresolved cores. In this paper we show that most LLAGN present extended jet radio emission when observed with sufficient angular resolution and sensitivity. They are thus able to power, at least, parsec-scale radio jets.
Mar Mezcua, M. Prieto
openalex +4 more sources
Polarized Broad‐Line Emission from Low‐Luminosity Active Galactic Nuclei [PDF]
The Astrophysical Journal, 1999 28 pages, including 3 tables and 16 figures. Uses the emulateapj latex style file.
Barth, A. J. +2 more
openaire +2 more sources
Radio Sources in Low-Luminosity Active Galactic Nuclei. III. "AGNs" in a Distance-Limited Sample of "LLAGNs" [PDF]
Astronomy & Astrophysics, 2002 to appear in A& ...
Neil M. Nagar +3 more
openalex +4 more sources
X-Ray Flares in the Long-term Light Curve of Low-luminosity Active Galactic Nucleus M81*
The Astrophysical Journal, 2023 Most active galactic nuclei at the center of the nearby galaxies have supermassive black holes accreting at sub-Eddington rates through hot accretion flows or radiatively inefficient accretion flows, which efficiently produce jets.
Gunjan Tomar, Nayantara Gupta
doaj +1 more source
Low-Luminosity Active Galactic Nuclei [PDF]
Symposium - International Astronomical Union, 1989 I review the basic properties of low-luminosity active galactic nuclei (LLAGNs) — objects in which activity similar to, but intrinsically milder than, that in QSOs and luminous Seyferts is believed to be present. Until recently, most LLAGNs were first recognized as such and studied at optical wavelengths, but evidence for activity and valuable ...
openaire +1 more source
Are most low-luminosity active galactic nuclei really obscured? [PDF]
Monthly Notices of the Royal Astronomical Society, 2009 At low Eddington ratios (?), two effects make it more difficult to detect certain active galactic nuclei (AGN) given a particular set of selection methods. First, even allowing for fixed accretion physics, at low ?AGN become less luminous relative to their hosts, diluting their emission; the magnitude of the dilution depends on host properties and ...
Hopkins, Philip F. +3 more
openaire +2 more sources
On the Unification of Low Luminosity Active Galactic Nuclei
International Journal For Multidisciplinary Research, 2023 We have used the distributions of observed radio properties of a subset of AGNs called low luminosity AGNs (LLAGNs) to investigate the relationship between radio-selected BL Lacs (RBLs and XBLs) and Fanaroff-Riley Type I radio galaxies (FRI) in accordance with the unified scheme. Analysis of the core and extended luminosity show that RBLs are more core
Godson Abbey - +5 more
openaire +1 more source
LINERs as low-luminosity active galactic nuclei [PDF]
Advances in Space Research, 1999 Many nearby galaxies contain optical signatures of nuclear activity in the form of LINER nuclei. LINERs may be the weakest and most common manifestation of the quasar phenomenon. The physical origin of this class of objects, however, has been ambiguous.
openaire +2 more sources
X-Ray Observations of Low-Luminosity Active Galactic Nuclei [PDF]
International Astronomical Union Colloquium, 1997 AbstractThrough X-ray observations with ASCA, low-luminosity active galactic nuclei have been found in at least seven near-by spiral galaxies. Some of them exhibit very intense, and possibly broad, Fe-K emission lines. Their time variability is relatively insignificant, in contrast to lowluminosity Seyfert galaxies.
K. Makishima +3 more
openaire +1 more source
STUDY OF SWIFT/BAT SELECTED LOW-LUMINOSITY ACTIVE GALACTIC NUCLEI OBSERVED WITH SUZAKU [PDF]
The Astrophysical Journal, 2016 ABSTRACT We systematically analyze the broadband (0.5–200 keV) X-ray spectra of hard X-ray (>10 keV) selected local low-luminosity active galactic nuclei (LLAGNs) observed with Suzaku and Swift/BAT. The sample consists of 10 LLAGNs detected with Swift/BAT with intrinsic 14–195 keV luminosities smaller than 1042 erg s−1 available in ...
T. Kawamuro +4 more
openalex +4 more sources