Results 101 to 110 of about 40,993 (207)

Properties and Origin of Galaxy Velocity Bias in the Illustris Simulation

, 2017
We use the hydrodynamical galaxy formation simulations from the Illustris suite to study the origin and properties of galaxy velocity bias, i.e., the difference between the velocity distributions of galaxies and dark matter inside halos.
Guo, Hong, Ye, Jia-Ni, Zehavi, Idit, Zheng, Zheng   +3 more
core   +1 more source

The ASTRID Simulation at z = 0: From Massive Black Holes to Large-scale Structure

The Astrophysical Journal
We present the z = 0 results for the cosmological simulation ASTRID . Hosting 2 × 5500 ^3 ≈ 0.33 trillion particles in a box of 370 Mpc per side, ASTRID is one of the largest cosmological hydrodynamic simulations evolved to z = 0. ASTRID features a large
Yihao Zhou, Tiziana Di Matteo, Simeon Bird, Rupert Croft, Yueying Ni, Yanhui Yang, Nianyi Chen, Patrick Lachance, Xiaowen Zhang, Fatemeh Hafezianzadeh   +9 more
doaj   +1 more source

Galaxy catalogs from the Sage Semi-Analytic Model calibrated on The Three Hundred hydrodynamical simulations: A method to push the limits toward lower mass galaxies in dark matter only clusters simulations [PDF]

EPJ Web of Conferences
The new generation of upcoming deep photometric and spectroscopic surveys will allow us to measure the astrophysical properties of faint galaxies in massive clusters. This would demand to produce simulations of galaxy clusters with better mass resolution
Gómez Jonathan S., Yepes G., Muñoz A. Jiménez, Cui W.   +3 more
doaj   +1 more source

Fast, large volume, GPU enabled simulations for the Ly-alpha forest: power spectrum forecasts for baryon acoustic oscillation experiments

, 2011
High redshift measurements of the baryonic acoustic oscillation scale (BAO) from large Ly-alpha forest surveys represent the next frontier of dark energy studies. As part of this effort, efficient simulations of the BAO signature from the Ly-alpha forest
Becker, Beutler, Bi, Bi, Blake, Blake, Blake, Bolton, Bolton, Bolton, Bolton, Bradley Greig, Cen, Choudhury, Cole, Coles, Croft, Desjacques, Desjacques, Eisenstein, Eisenstein, Eisenstein, Fluke, Gnedin, Gnedin, Hernquist, Hui, Hütsi, J. Stuart B. Wyithe, James S. Bolton, Kim, Kim, Kitaura, Lidz, Matarrese, McDonald, McDonald, McDonald, McQuinn, McQuinn, Meiksin, Norman, Padmanabhan, Percival, Percival, Rauch, Reisenegger, Richards, Schaye, Seo, Slosar, Slosar, Springel, Theuns, Valageas, Viel, Viel, Viel, Viel, White, Zel’Dovich, Zhan   +61 more
core   +1 more source

Vortex Avalanches and Collective Motion in Neutron Stars

The Astrophysical Journal
We simulate the dynamics of about 600 quantum vortices in a spinning-down cylindrical container using a Gross–Pitaevskii model. For the first time, we find convincing spatial-temporal evidence of avalanching behavior resulting from vortex depinning and ...
I-Kang Liu, Andrew W. Baggaley, Carlo F. Barenghi, Toby S. Wood   +3 more
doaj   +1 more source

Hydrodynamical Simulations of Galaxy Clusters with Galcons

, 2010
We present our recently developed {\em galcon} approach to hydrodynamical cosmological simulations of galaxy clusters - a subgrid model added to the {\em Enzo} adaptive mesh refinement code - which is capable of tracking galaxies within the cluster ...
Arieli, Baldi, Bloemen, Borgani, Brinchmann, Bruggen, Bryan, Bryan, Cavagnolo, Cavaliere, Cavaliere, Cecil, Cohen, Colin, Dickinson, Donahue, Eisenstein, Fontana, Glazebrook, Hansen, Hayakawa, Hayakawa, Heckman, Heckman, Heckman, Hopkins, Host ., Kapferer, Kenney, Kenney, Klypin, Lemze, Maughan, Menci, Michael L. Norman, Moore, Nagai, Nagai, Nagamine, Nagamine, Nagamine, Norman, O'Shea, Pettini ., Rephaeli, Schindler, Strickland, Strickland, Sun, Tinker, Tozzi, Vikhlinin, Wu, Yinon Arieli, Yoel Rephaeli   +54 more
core   +1 more source

On the Blazhko Effect in RR Lyrae Stars

, 2011
The Blazhko effect is a long term, generally irregular modulation of the light curves that occurs in a sizeable number of RR Lyrae stars. The physical origin of the effect has been a puzzle ever since its discovery over a hundred years ago. We build here
Buchler, Buchler, Buchler, Buchler, Buchler, Guckenheimer, Hartman, J. Robert Buchler, Kolláth, Molnár, Moskalik, Spiegel, Thompson, Zoltán Kolláth   +13 more
core   +1 more source

Simulations of liquid crystal hydrodynamics

, 1999
We present a lattice Boltzmann algorithm for liquid crystal hydrodynamics. The coupling between the tensor order parameter and the flow is treated consistently allowing investigation of a wide range of non-Newtonian flow behavior. We present results for the effect of hydrodynamics on defect coalescence; of the appearance of the log-rolling and kayaking
Denniston, Colin, Orlandini, E., Yeomans, J. M.   +2 more
openaire   +2 more sources

Engulfment of Eccentric Planets by Giant Stars: Hydrodynamics and Light Curves

The Astrophysical Journal
Recent observations suggest that planetary engulfment by a giant star may produce radiation that resembles subluminous red novae. We present three-dimensional hydrodynamical simulations of the interaction between an eccentric 5 M _J giant planet and its ...
Mengqi Yang, Dong Lai, Fuyuan Wu, Jie Zhang   +3 more
doaj   +1 more source

Topology of Large-Scale Structure by Galaxy Type: Hydrodynamic Simulations

, 1995
The topology of large scale structure is studied as a function of galaxy type using the genus statistic. In hydrodynamical cosmological CDM simulations, galaxies form on caustic surfaces (Zeldovich pancakes) then slowly drain onto filaments and clusters.
Cen, Renyue, Gott, III, J. Richard, Ostriker, Jeremiah P.   +2 more
core   +1 more source