Results 21 to 30 of about 4,278,679 (301)
Evidence for a Young Stellar Population in Nearby Type 1 Active Galaxies [PDF]
Astrophysical Journal, 2019 To understand the physical origin of the close connection between supermassive black holes (BHs) and their host galaxies, it is vital to investigate star formation properties in active galaxies.
Minjin Kim, L. Ho
semanticscholar +1 more source
Chemie Ingenieur Technik, EarlyView., 2023 Let us consider an alternative perspective on climate change: The sum of solar radiation and heat generated by human activity result in a net energy input of 1.96 times that of the Sun on the Earth's surface. The expanding global population is expected to exacerbate this issue. Potential solutions are proposed, including replacement and heat recycling.
Martin Bertau, Gerald Steiner
wiley +1 more source
Reverberation Mapping of Optical Emission Lines in Five Active Galaxies [PDF]
, 2016 We present the first results from an optical reverberation mapping campaign executed in 2014 targeting the active galactic nuclei (AGNs) MCG+08-11-011, NGC 2617, NGC 4051, 3C 382, and Mrk 374.
M. Fausnaugh +75 more
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
FAR-INFRARED LINE SPECTRA OF ACTIVE GALAXIES FROM THE HERSCHEL/PACS SPECTROMETER: THE COMPLETE DATABASE [PDF]
, 2016 We present a coherent database of spectroscopic observations of far-IR fine-structure lines from the Herschel/Photoconductor Array Camera and Spectrometer archive for a sample of 170 local active galactic nuclei (AGNs), plus a comparison sample of 20 ...
J. Fernández-Ontiveros +5 more
semanticscholar +1 more source
BROAD Hβ EMISSION-LINE VARIABILITY IN A SAMPLE OF 102 LOCAL ACTIVE GALAXIES [PDF]
, 2016 A sample of 102 local (0.02 ≤ z ≤ 0.1) Seyfert galaxies with black hole masses MBH > 107M⊙ was selected from the Sloan Digital Sky Survey (SDSS) and observed using the Keck 10 m telescope to study the scaling relations between MBH and host galaxy ...
Jordan N. Runco +9 more
semanticscholar +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
Shock Excitation in Narrow-line Regions Powered by AGN Outflows
The Astrophysical Journal, 2023 Outflows in an active galactic nucleus (AGN) are considered to play a key role in the evolution of the host galaxy through transfer of a large amount of energy.
Misaki Mizumoto +12 more
doaj +1 more source
Cosmic X-ray surveys of distant active galaxies [PDF]
, 2015 We review results from cosmic X-ray surveys of active galactic nuclei (AGNs) over the past $$\approx 15$$≈15 years that have dramatically improved our understanding of growing supermassive black holes in the distant universe.
W. Brandt, D. Alexander
semanticscholar +1 more source
The Classifications and Some Correlations for Fermi Blazars
Galaxies, 2016 In a recent paper, we constructed the spectral energy distributions (SEDs) for 1425 Fermi blazars. We classify them as low synchrotron peak sources (LSPs) if log ν p ( Hz ) ≤ 14.0, intermediate synchrotron peak sources (ISPs) if 14.0 <
Junhui Fan +5 more
doaj +1 more source