Results 71 to 80 of about 55,785 (258)
Properties of Galaxies with Counter-rotating Stellar Disks in the MaNGA Survey
The Astrophysical JournalThe gas accretion process can fuel both star formation and black hole activity, playing a critical role in galaxy evolution. The counter-rotating structures are believed to originate from gas accretion, serving as an ideal laboratory to study its impact ...
Min Bao +4 more
doaj +1 more source
On Estimating the Mass of Keplerian Accretion Disks in H2O Maser Galaxies [PDF]
The Astrophysical Journal, 2018 Abstract H2O maser disks with Keplerian rotation in active galactic nuclei offer a clean way to determine accurate black hole mass and the Hubble constant. An important assumption made in using a Keplerian H2O maser disk for measuring black hole mass and the Hubble constant is that the disk mass is negligible compared to the black hole ...
C. Y. Kuo +5 more
openaire +2 more sources
Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight
Experimental Physiology, EarlyView.Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley +1 more source
Modelling and observations of molecules in discs around young stars [PDF]
, 2013 This thesis contains a study of molecules within circumstellar discs around young stars. Firstly, the chemistry of a disc around a young, Class 0 protostar is modelled.
Ilee, John David
core
The Astrophysical JournalWe propose an alternative physical interpretation and formation pathway for the recently discovered “little red dots” (LRDs). We model LRDs as supermassive stars (SMSs) surrounded by massive self-gravitating accretion disks (supermassive disks, SMDs ...
Lorenz Zwick +2 more
doaj +1 more source
Optical polarimetry studies of Seyfert galaxies [PDF]
, 1999 Optical imaging polarimetry has been performed on seven nearby Seyfert galaxies, three with face-on and four with edge-on host galaxies of various morphological classifications.
Felton, Michelle Ann
core
Advanced Optical Materials, Volume 14, Issue 23, 19 June 2026.Structural color generation is an emerging field for digital display and printing applications. This report presents a novel truncated‐cone design and the first use of GaP sandwiched between two layers of TiO2, demonstrating ultra‐bright, tunable colors with a record color gamut.
Md Rumon Miah +2 more
wiley +1 more source
The Astrophysical JournalAccretion disks are highly unstable to magnetic instabilities driven by shear flow, where classically, the axisymmetric, weak-field magnetorotational instability (MRI) has received much attention through local WKB approximations.
Nicolas Brughmans +2 more
doaj +1 more source
Influence of Black Hole Spin on the Shape of the Fe Kα Spectral Line: The Case of 3C 405
Open Astronomy, 2011 Here we analyze how the angular momenta (spins) of black holes in the centers of Active Galactic Nuclei (AGN) affect the shape of the FeK line emitted from their accretion disks.
Jovanović P. +2 more
doaj +1 more source
OBSERVATIONAL EVIDENCE FOR YOUNG RADIO GALAXIES IS TRIGGERED BY ACCRETION DISK INSTABILITY [PDF]
The Astrophysical Journal, 2009 5 pages, 3 figures, accepted by ApJ Letter, emulateapj ...
openaire +2 more sources