Results 71 to 80 of about 37,453 (224)
Environment and Gas Fraction in Type 2 AGN versus Non-AGN Galaxies
The Astrophysical JournalWe investigate the environmental parameters and gas fraction ( f _gas ) properties of type 2 active galactic nuclei (AGN) and non-AGN galaxies, utilizing a large sample of galaxies from the Sloan Digital Sky Survey DR7 with z ≤ 0.3.
Jyoti Yadav +2 more
doaj +1 more source
Fuelling Starbursts and AGN [PDF]
, 2004 There is considerable evidence that the circumnuclear regions of galaxies are intimately related to their host galaxies, most directly through their bars. There is also convincing evidence for relations between the properties of supermassive black holes in the nuclei of galaxies and those of their host galaxy.
openaire +2 more sources
AGNs: Demography and Remnants [PDF]
Highlights of Astronomy, 1995 In this contribution I shall first briefly review the arguments suggesting that most galaxies pass through a quasar or AGN phase early in their lifetime, perhaps concurrent with bulge formation. Then, as a footnote to the paper by van der Marel, I will discuss how relic black holes in quiescent galaxies could reveal themselves by the occasional flares ...
openaire +1 more source
Autoimmunity: Molecular Mechanisms, Biomarkers, and Therapeutic Opportunities
MedComm, Volume 7, Issue 9, September 2026.Major types of immunometabolism, epigenetics, posttranscriptional regulation, and functional reprogramming involved in autoimmune diseases. The roles of immunometabolism, epigenetics, posttranscriptional regulation, and functional reprogramming in autoimmune diseases have been a major research focus in recent years.
Jialong Kuang +10 more
wiley +1 more source
Correlated X-ray/optical variability in the quasar MR?2251?178 [PDF]
, 2008 Emission from active galactic nuclei is known to vary strongly over time over a wide energy band, but the origin of the variability and especially of the interband correlations is still not well established.
Kaspi, S. +18 more
core +2 more sources
New Conformally Invariant Born–Infeld Models and Geometrical Currents
PhysicsA new conformally invariant gravitational generalization of the Born–Infeld (BI) model is proposed and analyzed from the point of view of symmetries. Taking a geometric identity involving the determinant functions detfBμν, Fμν with the Bach Bμν and the ...
Diego Julio Cirilo-Lombardo
doaj +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 +2 more sources
Strukturaufklärung mittels Nanoplasmen: Wenn Nanocluster explodieren
Physik in unserer Zeit, Volume 57, Issue 5, Page 224-229, September 2026.Lasererzeugte Nanoplasmen sind mikroskopische Labore für extreme Materiezustände. Der Zerfall dieses äußerst instabilen Zustands in einer Coulomb‐Explosion manifestiert sich in schnellen Elektronen, hochgeladenen Ionen und kurzwelliger Strahlung. Ihre Analyse offenbart Einblicke in die hochdynamischen Prozesse der Ionisation und Relaxation.
Klara Raspe, Josef Tiggesbäumker
wiley +1 more source
The demography and the evolution of heavily obscured AGN [PDF]
, 2015 Obscured AGN as a phase in the SMBH/host co-evolution or still consistent with a geometrical interpretation after 30 years from the discovery of polarized lines in NGC1068 or both? Incomplete review of most recent results biased toward hard X-rays
Cappelluti, N. +12 more
core
The Open Journal of AstrophysicsGalaxy mergers have been shown to trigger AGN in the nearby universe, but the timescale over which this process happens remains unconstrained. The Multi-Model Merger Identifier (MUMMI) machine vision pipeline has been demonstrated to provide reliable ...
Sara Ellison +8 more
doaj +1 more source