Results 31 to 40 of about 427,202 (211)

CMBPol Mission Concept Study: Gravitational Lensing [PDF]

, 2008
Gravitational lensing of the cosmic microwave background by large-scale structure in the late universe is both a source of cosmological information and a potential contaminant of primordial gravity waves.
Alan Kogut, Asantha Cooray, Asantha Cooray, Aurelien Fraisse, Brian Keating, Chris Hirata, Daniel Baumann, Duncan Hanson, Graça Rocha, Joanna Dunkley, Kendrick M. Smith, Kendrick Smith, Lawrence Krauss, Manoj Kaplinghat, Marilena LoVerde, Mark G. Jackson, Matias Zaldarriaga, Meir Shimon, Nathan Miller, Oliver Zahn, Olivier Doré, Scott Dodelson, Sudeep Das   +22 more
core   +3 more sources

Large scale structure of the Universe [PDF]

AIP 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, Remo Ruffini, Gregory Vereshchagin   +2 more
openaire   +2 more sources

First Constraints on Growth Rate from Redshift-space Ellipticity Correlations of SDSS Galaxies at 0.16 < z < 0.70

The Astrophysical Journal Letters, 2023
We report the first constraints on the growth rate of the universe, f ( z ) σ _8 ( z ), with intrinsic alignments (IAs) of galaxies. We measure the galaxy density-intrinsic ellipticity cross-correlation and intrinsic ellipticity autocorrelation functions
Teppei Okumura, Atsushi Taruya
doaj   +1 more source

Cosmological Shock Waves in the Large Scale Structure of the Universe: Non-gravitational Effects [PDF]

, 2007
Cosmological shock waves result from supersonic flow motions induced by hierarchical clustering of nonlinear structures in the universe. These shocks govern the nature of cosmic plasma through thermalization of gas and acceleration of nonthermal, cosmic ...
Cen, Renyue, Kang, Hyesung, Ostriker, J. P., Ryu, Dongsu   +3 more
core   +2 more sources

Large scale structure and the generalised Chaplygin gas as dark energy [PDF]

, 2003
The growth of large scale structure is studied in a universe containing both cold dark matter (CDM) and generalized Chaplygin gas (GCg). GCg is assumed to contribute only to the background evolution of the universe while the CDM component collapses and ...
A. Dev, A. G. Riess, A. Kamenshchik, A. Sen, D. Carturan, D. N. Spergel, E. Gaztañaga, Enrique Gaztañaga, F. Bernardeau, G. Dvali, G. W. Gibbons, J. Alcaniz, J. C. Fabris, J. C. Fabris, K. Benabed, K. Freese, L. Amendola, L. M. G. Beca, M. Bento, M. Bento, M. Bento, M. Makler, Marc Manera, N. Bilic, P. Fosalba, P. J. E. Peebles, P. J. E. Peebles, P. P. Avelino, R. Bean, R. Crittenden, R. K. Sachs, R. R. Caldwell, R. Reis, S. Perlmutter, T. Multamäki, Tuomas Multamäki   +35 more
core   +1 more source

Cosmological Information in the Marked Power Spectrum of the Galaxy Field

The Astrophysical Journal, 2023
Marked power spectra are two-point statistics of a marked field obtained by weighting each location with a function that depends on the local density around that point. We consider marked power spectra of the galaxy field in redshift space that up-weight
Elena Massara, Francisco Villaescusa-Navarro, ChangHoon Hahn, Muntazir M. Abidi, Michael Eickenberg, Shirley Ho, Pablo Lemos, Azadeh Moradinezhad Dizgah, Bruno Régaldo-Saint Blancard   +8 more
doaj   +1 more source

Consistency test of general relativity from large scale structure of the Universe [PDF]

, 2009
We construct a consistency test of General Relativity (GR) on cosmological scales. This test enables us to distinguish between the two alternatives to explain the late-time accelerated expansion of the universe, that is, dark energy models based on GR ...
, , A.J.S. Hamilton, B. Jain, E. Bertschinger, H.J. Mo, K. Koyama, K. Koyama, Kazuya Koyama, L. Amendola, M. White, N. Kaiser, S. Capozziello, S. Matarrese, S. Nojiri, Supernova Cosmology Project collaboration, Supernova Search Team collaboration, Y.-S. Song, Y.-S. Song, Y.-S. Song, Yong-Seon Song   +20 more
core   +2 more sources

Automated detection of filaments in the large scale structure of the universe

, 2010
We present a new method to identify large scale filaments and apply it to a cosmological simulation. Using positions of haloes above a given mass as node tracers, we look for filaments between them using the positions and masses of all the remaining dark-
Aragón-Calvo, Aragón-Calvo, Avila-Reese, Barrow, Bharadwaj, Bharadwaj, Biggs, Bond, Bond, Bullock, Colberg, Colberg, Colless, Davis, Diaferio, Dietrich, Einasto, Eriksen, Finlator, Gao, González, Knollmann, Martínez, Mead, Navarro, Nelson D. Padilla, Novikov, Padilla, Pelupessy, Pimbblet, Pimbblet, Pivato, Porter, Roberto E. González, Sahni, Scharf, Shaap, Shandarin, Sousbie, Stoica, Stoica, Stoughton, Tittley, Voronoi, York, Zel'dovich, Zel'dovich, Zhang   +47 more
core   +1 more source

Constraining cosmological ultra-large scale structure using numerical relativity [PDF]

, 2017
Cosmic inflation, a period of accelerated expansion in the early universe, can give rise to large amplitude ultra-large scale inhomogeneities on distance scales comparable to or larger than the observable universe.
Aguirre, Anthony, Braden, Jonathan, Johnson, Matthew C., Peiris, Hiranya V.   +3 more
core   +2 more sources

Large–scale structure and matter in the Universe

Philosophical 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