Results 41 to 50 of about 4,398,607 (320)
NON-THERMAL RADIATION FROM COLLISIONS OF COMPACT OBJECTS WITH INTERMEDIATE-SCALE JETS IN ACTIVE GALAXIES [PDF]
, 2015 Massive black holes in active galaxies are immersed in huge concentrations of late-type stars in the galactic bulges and also early-type massive stars in the nuclear stellar clusters, which are additionally surrounded by quasi-spherical halos on a scale ...
W. Bednarek, P. Banasiński
semanticscholar +1 more source
Janus kinase 2 inhibition by pacritinib as potential therapeutic target for liver fibrosis
Hepatology, EarlyView., 2022 Diagram of the activation of the profibrotic and procontractile Janus kinase 2 (JAK2)/Ras homolog family member A/Rho‐kinase pathway and the inhibition of phosphorylated JAK2 by pacritinib to inhibit hepatic stellate cell activity. Abstract Background and Aims Janus kinase 2 (JAK2) signaling is increased in human and experimental liver fibrosis with ...
Sandra Torres +21 more
wiley +1 more source
The Way to Quench: Galaxy evolution in Abell 2142 [PDF]
, 2023 We show how the star formation activity of galaxies is progressively inhibited from the outer region to the center of the massive cluster A2142. From an extended spectroscopic redshift survey of 2239 galaxies covering a circular area of radius $\sim 11$~Mpc from the cluster center, we extract a sample of 333 galaxies with known stellar mass, star ...
arxiv +1 more source
Determining Central Black Hole Masses in Distant Active Galaxies and Quasars. II. Improved Optical and UV Scaling Relationships [PDF]
, 2002 We present four improved empirical relationships useful for estimating the central black hole mass in nearby AGNs and distant luminous quasars alike using either optical or UV single-epoch spectroscopy.
M. Vestergaard, B. Peterson
semanticscholar +1 more source
Combining LOFAR and Apertif Data for Understanding the Life Cycle of Radio Galaxies
Galaxies, 2021 Active galactic nuclei (AGN) at the centres of galaxies can cycle between periods of activity and of quiescence. Characterising the duty-cycle of AGN is crucial for understanding their impact on the evolution of the host galaxy.
Raffaella Morganti +12 more
doaj +1 more source
COSMIC EVOLUTION OF BLACK HOLES AND SPHEROIDS. V. THE RELATION BETWEEN BLACK HOLE MASS AND HOST GALAXY LUMINOSITY FOR A SAMPLE OF 79 ACTIVE GALAXIES [PDF]
, 2014 We investigate the cosmic evolution of the black hole (BH) mass–bulge luminosity relation using a sample of 52 active galaxies at z ∼ 0.36 and z ∼ 0.57 in the BH mass range of 107.4–109.1 M☉.
Daeseong 대성 Park 박 +5 more
semanticscholar +1 more source
Galaxies, 2021 Radio galaxies are known to undergo phases of activity, where the stage after the jets have switched off is referred to as the remnant phase. This state can be followed by a restarted phase when the activity reignites. Remnant and restarted radio sources
Nika Jurlin +3 more
doaj +1 more source
Active galactic nuclei among polar-ring galaxies [PDF]
Astronomy Letters, vol.46, 501-508, 2020; transl. from Pis'ma v
Astron. Zh., vol.46, 535-542, 2020, 2020 Based on SDSS data, we consider the fraction of active galactic nuclei among polar-ring galaxies. We have found evidence for an excess of Seyfert galaxies and LINERs among polar-ring galaxies compared to ordinary objects. The observed nuclear activity of polar-ring galaxies may be associated with the accretion of gas from the region of the polar ...
arxiv +1 more source
A LOCAL BASELINE OF THE BLACK HOLE MASS SCALING RELATIONS FOR ACTIVE GALAXIES. III. THE MBH–σ RELATION [PDF]
, 2014 We create a baseline of the black hole (BH) mass ( M BH ?> )—stellar-velocity dispersion (σ) relation for active galaxies, using a sample of 66 local ( 0.02 < z < 0.09 ?> ) Seyfert-1 galaxies, selected from the Sloan Digital Sky Survey (SDSS).
V. Bennert +8 more
semanticscholar +1 more source
The Astrophysical Journal Letters, 2023 The Cosmic Evolution Early Release Science program observed the Extended Groth Strip (EGS) with the Mid-Infrared Instrument (MIRI) on the James Webb Space Telescope (JWST) in 2022.
Allison Kirkpatrick +35 more
doaj +1 more source