Cosmic background radiation anisotropy in an open inflation, cold dark matter cosmogony

1994 ◽  
Vol 434 ◽  
pp. L1 ◽  
Author(s):  
Marc Kamionkowski ◽  
Bharat Ratra ◽  
David N. Spergel ◽  
Naoshi Sugiyama
Keyword(s):  
Dark Matter ◽  
Cold Dark Matter ◽  
Background Radiation ◽  
Cosmic Background Radiation ◽  
Cosmic Background

Anisotropies of the cosmic background radiation in a 'hot' dark matter universe

1991 ◽  
Vol 382 ◽  
pp. 71 ◽  
Author(s):  
Peter Anninos ◽  
Richard A. Matzner ◽  
Robin Tuluie ◽  
Joan Centrella
Keyword(s):  
Dark Matter ◽  
Background Radiation ◽  
Cosmic Background Radiation ◽  
Cosmic Background

scholarly journals Dark Matter Haloes and Subhaloes

Galaxies ◽  
2019 ◽  
Vol 7 (4) ◽  
pp. 81 ◽  
Author(s):  
Jesús Zavala ◽  
Carlos S. Frenk
Keyword(s):  
Dark Matter ◽  
Large Scale ◽  
Cold Dark Matter ◽  
Background Radiation ◽  
Cosmic Background Radiation ◽  
Mass Range ◽  
Temperature Structure ◽  
N Body Problem ◽  
Central Regions ◽  
Low Mass

The development of methods and algorithms to solve the N-body problem for classical, collisionless, non-relativistic particles has made it possible to follow the growth and evolution of cosmic dark matter structures over most of the universe’s history. In the best-studied case—the cold dark matter or CDM model—the dark matter is assumed to consist of elementary particles that had negligible thermal velocities at early times. Progress over the past three decades has led to a nearly complete description of the assembly, structure, and spatial distribution of dark matter haloes, and their substructure in this model, over almost the entire mass range of astronomical objects. On scales of galaxies and above, predictions from this standard CDM model have been shown to provide a remarkably good match to a wide variety of astronomical data over a large range of epochs, from the temperature structure of the cosmic background radiation to the large-scale distribution of galaxies. The frontier in this field has shifted to the relatively unexplored subgalactic scales, the domain of the central regions of massive haloes, and that of low-mass haloes and subhaloes, where potentially fundamental questions remain. Answering them may require: (i) the effect of known but uncertain baryonic processes (involving gas and stars), and/or (ii) alternative models with new dark matter physics. Here we present a review of the field, focusing on our current understanding of dark matter structure from N-body simulations and on the challenges ahead.

scholarly journals Streaming Motions in the Local Universe

1992 ◽  
Vol 9 ◽  
pp. 687-691
Author(s):  
Ofer Lahav
Keyword(s):  
Total Mass ◽  
Cold Dark Matter ◽  
Local Group ◽  
Spiral Galaxies ◽  
Background Radiation ◽  
Gravitational Instability ◽  
Cosmic Background Radiation ◽  
Local Universe ◽  
Cosmic Background ◽  
Hubble Flow

AbstractDeviations from the Hubble flow directly probe of the underlying total mass distribution, assuming the gravitational instability picture. We discuss the origin of motion of the Local Group with respect to the Cosmic Background Radiation and review the peculiar velocity field deduced from distances to hundreds of elliptical and spiral galaxies, including new results for the Shapley Supercluster. Bulk-flow solutions which are free of Malmquistbias are presented, indicating coherence length larger than that expected from the optical and IRAS dipoles or from Cold Dark Matter models.

scholarly journals Introductory Remarks

2001 ◽  
Vol 204 ◽  
pp. 5-15
Author(s):  
P. J. E. Peebles
Keyword(s):  
Star Formation ◽  
Background Radiation ◽  
Cosmic Background Radiation ◽  
Morphological Type ◽  
Star Formation History ◽  
Cosmic Background ◽  
Formation History ◽  
Infrared Background

I review the assumptions and observations that motivate the concept of the extragalactic cosmic background radiation, and the issues of energy accounts and star formation history as a function of galaxy morphological type that figure in the interpretation of the measurements of the extragalactic infrared background.

South Pole studies of the anisotropy of the cosmic background radiation at one degree

1990 ◽  
Author(s):  
Peter R. Meinhold ◽  
Philip M. Lubin ◽  
Alfredo O. Chingcuanco ◽  
Jeff A. Schuster ◽  
Michael Seiffert
Keyword(s):  
Background Radiation ◽  
Cosmic Background Radiation ◽  
South Pole ◽  
Cosmic Background
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