Results 41 to 50 of about 801 (259)

Stellar Evolution with Radiative Feedback in AGN Disks

The Astrophysical Journal
Stars embedded in the inner parsec region of an active galactic nucleus (AGN) experience extreme accretion conditions that significantly alter their evolution.
Zheng-Hao Xu, Yi-Xian Chen, Douglas N. C. Lin   +2 more
doaj   +1 more source

Magnetohydrodynamic Simulations of Stellar Magnetosphere–Accretion Disk Interaction

The Astrophysical Journal, 1997
The magnetohydrodynamic evolution of the interaction region between the inner edge of an accretion disk and the magnetosphere of the central object is studied by means of time-dependent numerical simulations. The simulations assume the disk is adiabatic, is axisymmetric, has nonzero resistivity, and is initially in Keplerian rotation. The magnetosphere
Kristen A. Miller, James M. Stone
openaire   +1 more source

Investigating accretion disk – radio jet coupling across the stellar mass scale [PDF]

Proceedings of the International Astronomical Union, 2010
AbstractRelationships between the X-ray and radio behavior of black hole X-ray binaries during outbursts have established a fundamental coupling between the accretion disks and radio jets in these systems. I begin by reviewing the prevailing paradigm for this disk-jet coupling, also highlighting what we know about similarities and differences with ...
Miller-Jones, J.C.A., Sivakoff, G.R., Altamirano, D., Körding, E.G., Krimm, H.A., Maitra, D., Remillard, R.A., Russell, D.M., Tudose, V., Dhawan, V., Fender, R.P., Heinz, S., Markoff, S., Migliari, S., Rupen, M.P., Sarazin, C.L.   +15 more
openaire   +4 more sources

The Z Camelopardalis-type Star AY Piscium: Stellar and Accretion Disk Parameters

The Astrophysical Journal, 2023
Abstract We present a new study of the Z Cam-type eclipsing cataclysmic variable AY Piscium with the aim of determining the fundamental parameters of the system and the structure of the accretion flow therein. We use time-resolved photometric observations supplemented by spectroscopy in the standstill, to which we applied our light-curve
Jan Kára, Sergey Zharikov, Marek Wolf, Ainash Amantayeva, Gulnur Subebekova, Serik Khokhlov, Aldiyar Agishev, Jaroslav Merc   +7 more
openaire   +3 more sources

A new flow chip in combination with multiphoton microscopy as a protocol for longitudinal 3D imaging of tissue calcification under shear stress

FEBS Open Bio, EarlyView.
Miniaturized flow chip platform enabling continuous perfusion and longitudinal multiphoton 3D imaging of vascular smooth muscle cell constructs under physiological flow. Brightfield imaging guides region selection, while CellTracker Green and mRuby‐labeled fetuin‐A visualize cells and mineral deposition, respectively. Magnesium supplementation markedly
Vytautas Kučikas, Aaron D. Morgan, Ignas Čiurlionis, Christian Böhm, Stefan Jockenhövel, Willi Jahnen‐Dechent, Marc A. M. J. van Zandvoort   +6 more
wiley   +1 more source

A Semi-analytical Model for Stellar Evolution in AGN Disks

The Astrophysical Journal
Disks of gas accreting onto supermassive black holes may host numerous stellar-mass objects, formed within the disk or captured from a nuclear star cluster.
Alexander J. Dittmann, Matteo Cantiello
doaj   +1 more source

PASTA‐ELN: Simplifying Research Data Management for Experimental Materials Science

Advanced Engineering Materials, EarlyView.
Research data management faces ongoing hurdles as many ELNs remain complex and restrictive. PASTA‐ELN offers an open‐source, cross‐platform solution that prioritizes simplicity, offline access, and user control. Its in tuitive folder structure, modular Python add‐ons, and open formats enable seamless documentation, FAIR data practices, and easy ...
S. Brinckmann, G. Winkens, R. Schwaiger
wiley   +1 more source

Accreting Binary Eccentricities Follow Predicted Equilibrium Values

The Astrophysical Journal
We investigate observations of circumbinary disks (CBDs) to find evidence for an equilibrium eccentricity predicted by current binary accretion theory.
Allen R. Murray, Paul C. Duffell
doaj   +1 more source

Formation of the Asymmetric Accretion Disk from Stellar Wind Accretion in an S-type Symbiotic Star

The Astrophysical Journal, 2022
Abstract The accretion process in a typical S-type symbiotic star, targeting AG Draconis, is investigated through 3D hydrodynamical simulations using the FLASH code. Regardless of the wind velocity of the giant star, an accretion disk surrounding the white dwarf is always formed.
Young-Min Lee, Hyosun Kim, Hee-Won Lee
openaire   +2 more sources

Influence of Test Temperature and Test Frequency on Fatigue Life of Aluminum Alloy EN AW‐2618A

Advanced Engineering Materials, EarlyView.
The influence of test temperature and test frequency on the fatigue life of EN AW‐2618A is investigated. High‐cycle fatigue tests are performed at different test temperatures and frequencies on the 1000 h/230°C overaged state. Both test parameters reduce fatigue life due to time‐dependent damage mechanisms.
Ying Han, Julian M. Rosalie, Jan Radners, Mauro Madia, Philipp von Hartrott, Birgit Skrotzki   +5 more
wiley   +1 more source