Results 51 to 60 of about 6,292 (222)
Advanced Science, Volume 13, Issue 37, 3 July 2026.Producing MSCs on rigid culture substrates induces a scar‐making phenotype, jeapordizing therapeutic success. ‘Tissue‐soft’ surfaces prevent MSC fibrogenesis and preserve regenerative traits. An epigenetic network, driven by HOXA11 and SALL1, maintains ‘soft memory’ by keeping chromatin open in relaxed MSCs, promoting anti‐fibrotic programs.
Fereshteh Sadat Younesi +7 more
wiley +1 more source
OBSERVATIONAL EVIDENCE FOR ACTIVE GALACTIC NUCLEI FEEDBACK AT THE PARSEC SCALE
, 2011 In a hot accretion flow, the radiation from the innermost region of the flow propagates outward and heats the electrons at large radii via Compton scattering.
Miao Li, Feng Yuan, Yuan, Feng, Li, Miao
core +1 more source
The Astrophysical Journal, 2023 The variability of submillimeter emission provides a useful tool to probe the accretion physics in low-luminosity active galactic nuclei. We accumulate four years of observations using the Submillimeter Array for Centaurus A, NGC 4374, NGC 4278, and NGC ...
Bo-Yan Chen +7 more
doaj +1 more source
Advanced Science, Volume 13, Issue 37, 3 July 2026.Inspired by natural amino acid polymer‐melanin systems, this study strategically incorporated tellurocysteine to develop advanced radiation‐shielding materials. This approach transformed the primary interaction mechanism between melanin‐based materials and incident photons from Compton scattering to the photoelectric effect. Tellurocysteine‐polymerized
Wei Chen +6 more
wiley +1 more source
The Search for Very High Energy γ-rays from Misaligned AGN [PDF]
, 2013 The aim of this work is to study the potential for emission at very high energies (100 GeV) by misaligned active galactic nuclei (AGN) and the future prospects for observations of these objects with the next generation imaging atmospheric Cherenkov ...
CHEESEBROUGH, ALISTAIR
core
Millimeter-VLBI Observations of Low-luminosity Active Galactic Nuclei with Source-frequency Phase Referencing [PDF]
, 2022 We report millimeter-VLBI results of low-luminosity active galactic nuclei (M84 and M87) up to 88 GHz with source-frequency phase-referencing observations. We detected the weak VLBI core and obtained the first image of M84 at 88 GHz.
Jiang, Dongrong +5 more
core +1 more source
Revealing the Accretion Flow in M87*: Insights from Faraday Rotation
The Astrophysical JournalThe Faraday rotation measure (RM) is a commonly used tool to trace electron number density and magnetic fields in hot accretion flows, particularly in low-luminosity accreting supermassive black holes.
Constanza Echiburú-Trujillo +1 more
doaj +1 more source
The size of broad-line regions of low-luminosity active galactic nuclei [PDF]
Monthly Notices of the Royal Astronomical Society, 2007 We study the size of broad-line regions (BLRs) of low-luminosity active galactic nuclei (AGN), also called 'dwarf AGN',defined as having L Hα ≤ 10 41 erg s- 1 . We more than double the sample size analysed previously by Wang & Zhang. In this study we first confirm our previous result -that the sizes of BLRs of low-luminosity AGN are larger than those
X.-G. Zhang +2 more
openaire +1 more source
The Formation of Cirrus‐Like Water and Carbon Dioxide Ice Clouds in the Venusian Upper Haze Region
Journal of Geophysical Research: Planets, Volume 131, Issue 7, July 2026.Abstract The upper haze region of the Venusian atmosphere (∼70–100 km) experiences localized cooling, probably due to gravity waves, creating transient cold pockets. Water ice clouds may form in these cold pockets when sulfuric acid droplets undergo hygroscopic growth and subsequent freezing.
Kathleen A. Alden +5 more
wiley +1 more source
ACTIVE GALACTIC NUCLEI IN THE ULTRAVIOLET SPECTRUM [PDF]
, 2016 Active Galactic Nucleus (AGN) produce rich, luminescent spectra across the electro- magnetic spectrum. This work focuses on topics in the ultraviolet region, where lie the broad absorption line outflows innate to Broad Absorption Line Quasi-Stellar ...
Cooper, Erin
core