GALAXY CLUSTER BULK FLOWS AND COLLISION VELOCITIES IN QUMOND
GALAXY CLUSTER BULK FLOWS AND COLLISION VELOCITIES IN QUMOND
复制标题
QUMOND 中的星系团整体流动和碰撞速度
DOI:
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复制
发表时间:
2013
期刊:
影响因子:
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通讯作者:
G. Angus
中科院分区:
文献类型:
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作者:
H. Katz;S. McGaugh;S. McGaugh;P. Teuben;G. Angus
We examine the formation of clusters of galaxies in numerical simulations of a QUMOND cosmogony with massive sterile neutrinos. Clusters formed in these exploratory simulations develop higher velocities than those found in ΛCDM simulations. The bulk motions of clusters attain ∼1000 km s−1 by low redshift, comparable to observations whereas ΛCDM simulated clusters tend to fall short. Similarly, high pairwise velocities are common in cluster–cluster collisions like the Bullet Cluster. There is also a propensity for the most massive clusters to be larger in QUMOND and to appear earlier than in ΛCDM, potentially providing an explanation for “pink elephants” like El Gordo. However, it is not obvious that the cluster mass function can be recovered.
DOI:
10.1088/0004-637x/704/1/672
发表时间:
2009-08
期刊:
The Astrophysical Journal
影响因子:
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作者:
Myung-Kook Jee;P. Rosati;H. Ford;K. Dawson;C. Lidman;S. Perlmutter;R. Demarco;V. Strazzullo;C. Mullis;H. Böhringer;R. Fassbender
通讯作者:
Myung-Kook Jee;P. Rosati;H. Ford;K. Dawson;C. Lidman;S. Perlmutter;R. Demarco;V. Strazzullo;C. Mullis;H. Böhringer;R. Fassbender
影响因子:
6.5
作者:
P. Rosati;P. Tozzi;R. Gobat;Joana S. Santos;M. Nonino;R. Demarco;C. Lidman;C. Lidman;C. Mullis;V. Strazzullo;H. Böhringer;R. Fassbender;Kyle S. Dawson;Masayuki Tanaka;J. Jee;H. Ford;G. Lamer;A. Schwope
通讯作者:
P. Rosati;P. Tozzi;R. Gobat;Joana S. Santos;M. Nonino;R. Demarco;C. Lidman;C. Lidman;C. Mullis;V. Strazzullo;H. Böhringer;R. Fassbender;Kyle S. Dawson;Masayuki Tanaka;J. Jee;H. Ford;G. Lamer;A. Schwope