Zobrazeno 1 - 10
of 47
pro vyhledávání: '"Rudd, Douglas H."'
Publikováno v:
Phys. Rev. D 90, 083503 (2014)
In light of the recent BICEP2 B-mode polarization detection, which implies a large inflationary tensor-to-scalar ratio r_{0.05}=0.2^{+0.07}_{-0.05}, we re-examine the evidence for an extra sterile massive neutrino, originally invoked to account for t
Externí odkaz:
http://arxiv.org/abs/1403.8049
Publikováno v:
ApJ, 182 (2014), 107
The use of galaxy clusters as cosmological probes hinges on our ability to measure their masses accurately and with high precision. Hydrostatic mass is one of the most common methods for estimating the masses of individual galaxy clusters, which suff
Externí odkaz:
http://arxiv.org/abs/1308.6589
Autor:
Kim, Ji-hoon, Abel, Tom, Agertz, Oscar, Bryan, Greg L., Ceverino, Daniel, Christensen, Charlotte, Conroy, Charlie, Dekel, Avishai, Gnedin, Nickolay Y., Goldbaum, Nathan J., Guedes, Javiera, Hahn, Oliver, Hobbs, Alexander, Hopkins, Philip F., Hummels, Cameron B., Iannuzzi, Francesca, Keres, Dusan, Klypin, Anatoly, Kravtsov, Andrey V., Krumholz, Mark R., Kuhlen, Michael, Leitner, Samuel N., Madau, Piero, Mayer, Lucio, Moody, Christopher E., Nagamine, Kentaro, Norman, Michael L., Oñorbe, Jose, O'Shea, Brian W., Pillepich, Annalisa, Primack, Joel R., Quinn, Thomas, Read, Justin I., Robertson, Brant E., Rocha, Miguel, Rudd, Douglas H., Shen, Sijing, Smith, Britton D., Szalay, Alexander S., Teyssier, Romain, Thompson, Robert, Todoroki, Keita, Turk, Matthew J., Wadsley, James W., Wise, John H., Zolotov, Adi
Publikováno v:
Astrophysical Journal Supplement Series, 210, 14, 2014
We introduce the AGORA project, a comprehensive numerical study of well-resolved galaxies within the LCDM cosmology. Cosmological hydrodynamic simulations with force resolutions of ~100 proper pc or better will be run with a variety of code platforms
Externí odkaz:
http://arxiv.org/abs/1308.2669
Publikováno v:
Phys. Rev. Lett. 112, 051302 (2014)
Current measurements of the low and high redshift Universe are in tension if we restrict ourselves to the standard six parameter model of flat $\Lambda$CDM. This tension has two parts. First, the Planck satellite data suggest a higher normalization o
Externí odkaz:
http://arxiv.org/abs/1307.7715
In the hierarchical structure formation model, clusters of galaxies form through a sequence of mergers and continuous mass accretion, which generate significant random gas motions especially in their outskirts where material is actively accreting. No
Externí odkaz:
http://arxiv.org/abs/1307.2251
In this work, we examine the effects of mergers on the hydrostatic mass estimate of galaxy clusters using high-resolution Eulerian cosmological simulations. We utilize merger trees to isolate the last merger for each cluster in our sample and follow
Externí odkaz:
http://arxiv.org/abs/1112.3659
We present a detailed investigation of the impact of astrophysical processes on the shape and amplitude of the kinetic Sunyaev-Zel'dovich (kSZ) power spectrum from the post-reionization epoch. This is achieved by constructing a new model of the kSZ p
Externí odkaz:
http://arxiv.org/abs/1109.0553
As emphasized by previous studies, proper treatment of the density fluctuation on the fundamental scale of a cosmological simulation volume - the "DC mode" - is critical for accurate modeling of spatial correlations on scales > 10% of simulation box
Externí odkaz:
http://arxiv.org/abs/1104.1428
Publikováno v:
Mon.Not.Roy.Astron.Soc.401:2463-2476,2010
Eulerian hydrodynamical simulations are a powerful and popular tool for modeling fluids in astrophysical systems. In this work, we critically examine recent claims that these methods violate Galilean invariance of the Euler equations. We demonstrate
Externí odkaz:
http://arxiv.org/abs/0909.0513
Autor:
Rudd, Douglas H., Nagai, Daisuke
Publikováno v:
Astrophys.J.701:L16-L19,2009
We present high-resolution cosmological hydrodynamic simulations of three galaxy clusters employing a two-temperature model for the intracluster medium. We show that electron temperatures in cluster outskirts are significantly lower than the mean gas
Externí odkaz:
http://arxiv.org/abs/0907.1287