Results 81 to 90 of about 90,767 (300)
HST/WFC3 Observations of an Off-Nuclear Superbubble in Arp 220 [PDF]
, 2015 We present a high spatial resolution optical and infrared study of the circumnuclear region in Arp 220, a late-stage galaxy merger. Narrowband imaging using HST/WFC3 has resolved the previously observed peak in H$\alpha$+[NII] emission into a bubble ...
Allen, Mark G. +11 more
core +1 more source
Advanced Science, EarlyView.In macrophage‐myofibroblast transition, upregulated NNMT depletes S‐Adenosylmethionine (SAM) and nicotinamide adenine dinucleotide(NAD+), thereby triggering epigenetic reprogramming via Histone H3 Lysine 27 acetylation (H3K27ac) accumulation at the promoter region of master transcription factor Prrx1.
Xiwen Dong +11 more
wiley +1 more source
The Peculiar Variable X-Ray Spectrum of the Active Galactic Nucleus PKS 2005–489
The Astrophysical Journal, 2023 PKS 2005−489 is a well-known, bright southern BL Lac object that has been detected up to TeV energies. In a low-flux state it exhibits the expected multiwavelength double-peaked spectrum in the radio− γ -ray band.
Owen Chase +6 more
doaj +1 more source
Powerful outflows in the central parsecs of the low-luminosity active galactic nucleus NGC 1386 [PDF]
, 2017 Low-luminosity Active Galactic Nuclei, i.e. L_bol/L_edd ~ 10^-6 - 10^-3, constitute the bulk population of Active Galactic Nuclei (AGNs). Powerful jets, common in these objects, are a crucial source of feedback energy driving mass outflows into the host ...
A. Rodr'iguez-Ardila +14 more
semanticscholar +1 more source
VLBI Observations of NGC6240: resolving the double nuclei and radio supernovae
, 2011 The European VLBI Network (EVN) has been used at two epochs in 2003 and 2009 to obtain multi-frequency high-resolution images of the merger galaxy NGC6240 in order to study the radio properties of all compact high-brightness components in the galaxy. Our
Baan +27 more
core +1 more source
A Hubble Space Telescope Imaging Survey of Nearby Active Glactic Nuclei [PDF]
, 1998 We obtained 500-second F606W WFPC2 images of 256 of the nearest ...
Antonucci R. +9 more
core +2 more sources
Advanced Energy Materials, EarlyView.This roadmap offers a forward‐looking perspective on spin enhancement in the oxygen evolution reaction. It highlights how combining systematic experiments, advanced computational modeling, and novel magnetic, chiral, or hybrid materials can deepen the understanding of spin‐dependent catalytic mechanisms.
Emma van der Minne +29 more
wiley +1 more source
An Active Galactic Nucleus Caught in the Act of Turning Off and On [PDF]
, 2017 We present the discovery of an active galactic nucleus (AGN) that is turning off and then on again in the z = 0.06 galaxy SDSS J1354+1327. This episodic nuclear activity is the result of discrete accretion events that could have been triggered by a past ...
J. Comerford +7 more
semanticscholar +1 more source
Device Performance of Emerging Photovoltaic Materials (Version 6)
Advanced Energy Materials, EarlyView.Efficiency of single junction perovskite (circles), organic (hexagons), dye sensitized (pentagons), kesterite (diamonds), Sb2Se3 (right triangle), and AgBiS2 (left triangles) solar cells at emerging‐pv.org over the last decade. ABSTRACT This 6th annual Emerging PV Report surveys peer‐reviewed advances since August 2024 across perovskite, organic ...
Osbel Almora +29 more
wiley +1 more source
Retrograde infall of the intergalactic gas onto S-galaxy and activity of galactic nuclei
Open AstronomyWe present the results of numerical simulations focused on the accretion of intergalactic gas onto a gas-rich S-type disc galaxy. Our investigation explores the conditions favouring the emergence of counterrotating stellar and gaseous components within ...
Khrapov Sergey S. +1 more
doaj +1 more source