Results 91 to 100 of about 40,993 (207)

X-ray emission from hydrodynamical simulations in non-LTE wind models

, 2009
Hot stars are sources of X-ray emission originating in their winds. Although hydrodynamical simulations that are able to predict this X-ray emission are available, the inclusion of X-rays in stationary wind models is usually based on simplifying ...
Feldmeier, A., Hamann, W. -R., Krticka, J., Kubat, J., Oskinova, L. M.   +4 more
core   +1 more source

3D Radiation-hydrodynamical Simulations of Shadows on Transition Disks

The Astrophysical Journal Letters
Shadows are often observed in transition disks, which can result from obscuring by materials closer to the star, such as a misaligned inner disk. While shadows leave apparent darkened emission as observational signatures, they have significant dynamical ...
Shangjia Zhang, Zhaohuan Zhu
doaj   +1 more source

FLAMINGO: calibrating large cosmological hydrodynamical simulations with machine learning. [PDF]

Mon Not R Astron Soc, 2023
Kugel R, Schaye J, Schaller M, Helly JC, Braspenning J, Elbers W, Frenk CS, McCarthy IG, Kwan J, Salcido J, van Daalen MP, Vandenbroucke B, Bahé YM, Borrow J, Chaikin E, Huško F, Jenkins A, Lacey CG, Nobels FSJ, Vernon I.   +19 more
europepmc   +1 more source

Photometric and clustering properties of hydrodynamical galaxies in a cosmological volume: results at z=0

, 2010
In this work, we present results for the photometric and clustering properties of galaxies that arise in a LambdaCDM hydrodynamical simulation of the local universe. The present-day distribution of matter was constructed to match the observed large scale
Alexandro Saro, Baldry, Baldry, Balogh, Baugh, Blanton, Blanton, Bower, Brough, Bruzual, Cattaneo, Cattaneo, Charlot, Cole, Colless, Colless, Cora, Crain, Croton, Davé, De Lucia, De Lucia, Dolag, Dolag, Fisher, Fisher, Fontanot, Guiderdoni, Guo, Haardt, Hatton, Hawkins, Hoffman, Huang, Kauffmann, Khalatyan, Klaus Dolag, Kolatt, Lagos, Li, Lin, Madgwick, Maeder, Malbon, Matteucci, Norberg, Norberg, Nuza, Ocvirk, Oppenheimer, Oppenheimer, Pearce, Popesso, Popesso, Rafferty, Recchi, Salpeter, Saro, Saro, Saro, Sebastián E. Nuza, Spergel, Springel, Springel, Springel, Springel, Springel, Sutherland, Tornatore, Tornatore, York, Yoshikawa, Zehavi   +72 more
core   +1 more source

Physics of a partially ionized gas relevant to galaxy formation simulations -- the ionization potential energy reservoir [PDF]

, 2013
Simulation codes for galaxy formation and evolution take on board as many physical processes as possible beyond the standard gravitational and hydrodynamical physics.
De Rijcke, Sven, Jachowicz, Natalie, Schroyen, Joeri, Vandenbroucke, Bert   +3 more
core   +2 more sources

Relativistic Binary Precession: Impact on Eccentric Massive Binary Black Hole Accretion and Hydrodynamics

The Astrophysical Journal
Recent hydrodynamical simulations have shown that circumbinary gas disks drive the orbits of massive binary black holes (BHs) to become eccentric, even when general relativistic (GR) corrections to the orbit are significant. Here, we study the GR apsidal
Stanislav DeLaurentiis, Zoltán Haiman, John Ryan Westernacher-Schneider, Luke Major Krauth, Jordy Davelaar, Jonathan Zrake, Andrew MacFadyen   +6 more
doaj   +1 more source

Obscuring and feeding supermassive black holes with evolving nuclear star clusters

, 2009
Recently, high resolution observations with the help of the near-infrared adaptive optics integral field spectrograph SINFONI at the VLT proved the existence of massive and young nuclear star clusters in the centres of a sample of Seyfert galaxies.
A. Burkert, Gallimore, Jungwiert, K. Meisenheimer, Kishimoto, Lodato, M. Camenzind, M. Krause, M. Schartmann, R. I. Davies, Tristram, Tristram   +11 more
core   +1 more source

Morphology and Mach Number Distribution of Merger Shock Surfaces in Merging Galaxy Clusters

The Astrophysical Journal
In a binary merger of two subclusters with comparable masses, a pair of merger shocks are typically generated, often manifesting as double radio relics. Using cosmological hydrodynamic simulations, we identify major merger events with mass ratio $1\lt {{
Eunyu Lee, Dongsu Ryu, Hyesung Kang
doaj   +1 more source

Conservation Laws in Smooth Particle Hydrodynamics: the DEVA Code

, 2003
We describe DEVA, a multistep AP3M-like-SPH code particularly designed to study galaxy formation and evolution in connection with the global cosmological model.
A. Saiz, A. Serna, Bond J. R., Bryan G. L., Dominguez-Tenreiro R., Elmegreen B., Evrard A. E., Gingold R. A., Godunov S. K., Navarro J. F., Nelson R. P., Nelson R. P., R. Dominguez‐Tenreiro, Saiz A., Saiz A., Steinmetz M., Thomas P. A., Tissera P. B., Vedel H., Yepes G.   +19 more
core   +1 more source

[C ii] Emission in a Self-regulated Interstellar Medium

The Astrophysical Journal
The [C ii ] 157.74 μ m fine-structure transition is one of the brightest and most well-studied emission lines in the far-infrared, produced in the interstellar medium (ISM) of galaxies.
Alon Gurman, Chia-Yu Hu, Amiel Sternberg, Ewine F. van Dishoeck   +3 more
doaj   +1 more source