Results 81 to 90 of about 40,993 (207)

Hydrodynamical Simulations of Black Hole Binary Formation in AGN Disks

The Astrophysical Journal Letters, 2023
We study close encounters between two single black holes (BHs) embedded in an AGN disk using a series of global 2D hydrodynamics simulations. We find that when the disk density is sufficiently high, bound BH binaries can be formed by the collision of ...
Jiaru Li, Adam M. Dempsey, Hui Li, Dong Lai, Shengtai Li   +4 more
doaj   +1 more source

Hydrodynamic simulations of clumps [PDF]

, 2008
Clumps in hot star winds can originate from shock compression due to the line driven instability. One-dimensional hydrodynamic simulations reveal a radial wind structure consisting of highly compressed shells separated by voids, and colliding with fast clouds. Two-dimensional simulations are still largely missing, despite first attempts.
Feldmeier, Achim (Prof. Dr.), Hamann, Wolf-Rainer (Prof. Dr.), Rätzel, D., Oskinova, Lidia M. (Dr.)   +3 more
openaire  

Delayed and Displaced: The Impact of Binary Interactions on Core-collapse SN Feedback

The Astronomical Journal
Core-collapse supernova feedback models in hydrodynamical simulations typically assume that all stars evolve as single stars. However, the majority of massive stars are formed in binaries and multiple systems, where interactions with a companion can ...
Tom Wagg, Julianne J. Dalcanton, Mathieu Renzo, Katelyn Breivik, Matthew E. Orr, Adrian M. Price-Whelan, Akaxia Cruz, Alyson Brooks, Ulrich P. Steinwandel, Eric C. Bellm   +9 more
doaj   +1 more source

Tracing large-scale structures in circumstellar disks with ALMA

, 2012
Planets are supposed to form in circumstellar disks. The gravitational potential of a planet perturbs the disk and leads to characteristic structures, i.e. spiral waves and gaps, in the disk's density profile.
Klahr, Hubert H., Ruge, Jan Philipp, Uribe, Ana L., Wolf, Sebastian   +3 more
core   +1 more source

An improved SPH scheme for cosmological simulations [PDF]

, 2015
We present an implementation of smoothed particle hydrodynamics (SPH) with improved accuracy for simulations of galaxies and the large-scale structure. In particular, we combine, implement, modify and test a vast majority of SPH improvement techniques in
Arth, A., Beck, A. M., Beck, M. C., Borgani, S., Dolag, K., Donnert, J. M. F., Foerster, P., Imgrund, M., Murante, G., Planelles, S., Remus, R. -S., Teklu, A. F.   +11 more
core   +3 more sources

Numerical simulation of wetland hydrodynamics

Environment International, 1999
Abstract This paper describes the numerical simulation of flow hydrodynamics within a wetland. Using data collected from a field-based investigation of wetland hydrodynamics in the Monash University Research Wetland, a two-dimensional model was developed and calibrated. MIKE 21, a two-dimensional depth averaged model developed by the Danish Hydraulic
Nicholas L.G. Somes, Warwick A. Bishop, Tony H.F. Wong   +2 more
openaire   +1 more source

Modeling Dust Production, Growth, and Destruction in Reionization-era Galaxies with the CROC Simulations. II. Predicting the Dust Content of High-redshift Galaxies

The Astrophysical Journal
We model the interstellar dust content of the reionization era with a suite of cosmological, fluid-dynamical simulations of galaxies with stellar masses ranging from ∼10 ^5 to 10 ^9 M _⊙ in the first 1.2 Gyr of the Universe.
Clarke J. Esmerian, Nickolay Y. Gnedin
doaj   +1 more source

Cosmological and astrophysical parameters from the SDSS flux power spectrum and hydrodynamical simulations of the Lyman-alpha forest [PDF]

, 2005
(abridged) The flux power spectrum of the Lyman-alpha forest in quasar (QSO) absorption spectra is sensitive to a wide range of cosmological and astrophysical parameters and instrumental effects.
Abel, Beltran, Bolton, Cowie, Croft, Croft, Croft, Desjacques, Eisenstein, Freedman, Gnedin, Gnedin, Haardt, Hui, Hui, Kim, Kim, Kollmeier, Lewis, Martin G. Haehnelt, Matteo Viel, McDonald, McDonald, McDonald, Meiksin, Pieri, Press, Rauch, Ricotti, Schaye, Schaye, Seljak, Seljak, Spergel, Springel, Springel, Theuns, Theuns, Theuns, Theuns, Tytler, Verde, Viel, Viel, Viel, Viel, Viel, Viel, Zaldarriaga, Zaldarriaga   +49 more
core   +2 more sources

Hydrodynamic instability experiments and simulations [PDF]

, 1995
Richtmyer-Meshkov experiments are conducted on the Nova laser with strong radiatively driven shocks (Mach > 20) in planar, two-fluid targets with Atwood number A < 0. Single mode interfacial perturbations are used to test linear theory and 3D random perturbations are used to study turbulent mix.
Dimonte, G., Schneider, M., Frerking, C.E.   +2 more
openaire   +2 more sources

Intrinsic alignment of disks and ellipticals across hydrodynamical simulations

The Open Journal of Astrophysics
The correlations between the positions and shapes of galaxies, i.e. intrinsic alignments, have been measured in many observational studies and hydrodynamical simulations.
M. L. van Heukelum, N. E. Chisari
doaj   +1 more source