Results 31 to 40 of about 166,709,059 (292)

Reoriented Memory of Galaxy Spins for the Early Universe

open access: yesThe Astrophysical Journal, 2023
Galaxy spins are believed to retain the initially acquired tendency of being aligned with the intermediate principal axis of the linear tidal field, which disseminates the prospect of using them as a probe of early universe physics. This roseate prospect,
Jun-Sung Moon, Jounghun Lee
doaj   +1 more source

Large scale structure of the Universe [PDF]

open access: yesAIP Conference Proceedings, 2010
10 pages, 9 figures; The Sun, the Stars, the Universe and General Relativity, International conference in honor of Ya. B. Zeldovich 95th Anniversary, April 20 - 23, 2009, Minsk; Eds. R.
Jaan Einasto   +2 more
openaire   +2 more sources

The role of energy shear in the collapse of protohaloes

open access: yesAstronomy & Astrophysics
Dark matter haloes form from the collapse of matter around special positions in the initial field, those where the local matter flows converge to a point. For such a triaxial collapse to take place, the energy shear tensor (the source of the evolution of
Musso Marcello, Sheth Ravi K.
doaj   +1 more source

An Observed Transition of Galaxy Spins on Void Surfaces

open access: yesThe Astrophysical Journal Letters, 2023
In linear theory, the galaxy angular momentum vectors that originate from initial tidal interactions with surrounding matter distribution intrinsically develop perpendicular alignments with the directions of maximum matter compression, regardless of ...
Jounghun Lee, Jun-Sung Moon
doaj   +1 more source

Galaxy transformation across the cosmic web: The influence zone of filaments

open access: yesAstronomy & Astrophysics
Context. The matter distribution in the Universe exhibits a rich variety of structures, and they form the so-called cosmic web. These structures arise from the anisotropic gravitational collapse of primordial density fluctuations and define the pathways ...
Alfonso L. Aguerri J., Zarattini Stefano
doaj   +1 more source

Efficient monitoring of large scale infrastructure as a service clouds [PDF]

open access: yes, 2015
Cloud computing has had a transformative effect upon distributed systems research. It has been one of the precursors of supposed big data revolution and has amplified the scale of software, networks, data and deployments.
Ward, Jonathan Stuart
core   +2 more sources

Hidden Vela supercluster revealed by the first hybrid redshift and peculiar velocity reconstruction

open access: yesAstronomy & Astrophysics
A large fraction of the extragalactic sky is obscured by foreground dust and stars along the plane of the Milky Way, leaving a major gap (≈20%) in whole-sky maps of large-scale structures – an incompleteness that is even more severe for peculiar velocity
Hollinger A. M.   +4 more
doaj   +1 more source

Cosmic voids and the kinetic analysis

open access: yesAstronomy & Astrophysics
We study the appearance and specific properties of the structures in the local Universe by means of the Vlasov kinetic technique. We consider the role of the cosmological constant in local structure formation via the theorem on the general function that ...
Gurzadyan V. G.   +2 more
doaj   +1 more source

The stability of voids in the Local Universe: The role of the cosmological constant

open access: yesAstronomy & Astrophysics
The Vlasov kinetic formalism is employed to study the evolution and stability of cosmic voids in the Local Universe, taking into account not only the gravitational attraction, but also the repulsive effect of the cosmological constant (i.e., local dark ...
Gurzadyan V. G.   +2 more
doaj   +1 more source

Large–scale structure and matter in the Universe

open access: yesPhilosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, 2003
17 Pages. Review paper from the January 2003 Royal Society Discussion Meeting, "The search for dark matter and dark energy in the universe"
openaire   +3 more sources

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