Results 241 to 250 of about 257,498 (300)

Cosmic Microwave Background Radiation

Reviews of Modern Physics, 1999
Most astronomers and physicists now believe that we live in an expanding universe that evolved from an early state of extremely high density and temperature. Measurements of the spectrum and anisotropy of the cosmic microwave background radiation (CMBR) provide strong evidence supporting this picture. Today, the spectrum of the CMBR matches that of a 2.
David R. Wilkinson, Lyman A. Page
openaire   +2 more sources

LiteBIRD: lite satellite for the study of B-mode polarization and inflation from cosmic microwave background radiation detection

Astronomical Telescopes + Instrumentation, 2016
LiteBIRD is a next generation satellite aiming for the detection of the Cosmic Microwave Background (CMB) B-mode polarization imprinted by the primordial gravitational waves generated in the era of the inflationary universe.
H. Ishino, Y. Akiba, K. Arnold, D. Barron, J. Borrill, R. Chendra, Y. Chinone, S. Cho, A. Cukierman, T. de Haan, M. Dobbs, A. Dominjon, T. Dotani, T. Elleflot, J. Errard, T. Fujino, H. Fuke, T. Funaki, N. Goeckner-wald, N. Halverson, P. Harvey, T. Hasebe, M. Hasegawa, K. Hattori, M. Hattori, M. Hazumi, N. Hidehira, C. Hill, G. Hilton, W. Holzapfel, Y. Hori, J. Hubmayr, K. Ichiki, H. Imada, J. Inatani, M. Inoue, Y. Inoue, F. Irie, K. Irwin, H. Ishitsuka, O. Jeong, H. Kanai, K. Karatsu, S. Kashima, N. Katayama, I. Kawano, T. Kawasaki, B. Keating, S. Kernasovskiy, R. Keskitalo, A. Kibayashi, Y. Kida, N. Kimura, K. Kimura, T. Kisner, K. Kohri, E. Komatsu, K. Komatsu, C. Kuo, S. Kuromiya, A. Kusaka, A. Lee, D. Li, E. Linder, M. Maki, H. Matsuhara, T. Matsumura, S. Matsuoka, S. Matsuura, S. Mima, Y. Minami, K. Mitsuda, M. Nagai, T. Nagasaki, R. Nagata, M. Nakajima, S. Nakamura, T. Namikawa, M. Naruse, T. Nishibori, K. Nishijo, H. Nishino, A. Noda, T. Noguchi, H. Ogawa, W. Ogburn, S. Oguri, I. Ohta, N. Okada, A. Okamoto, T. Okamura, C. Otani, G. Pisano, G. Rebeiz, P. Richards, S. Sakai, Y. Sakurai, Y. Sato, N. Sato, Y. Segawa, S. Sekiguchi, Y. Sekimoto, M. Sekine, U. Seljak, B. Sherwin, T. Shimizu, K. Shinozaki, S. Shu, R. Stompor, H. Sugai, H. Sugita, J. Suzuki, T. Suzuki, A. Suzuki, O. Tajima, S. Takada, S. Takakura, K. Takano, S. Takatori, Y. Takei, D. Tanabe, T. Tomaru, N. Tomita, P. Turin, S. Uozumi, S. Utsunomiya, Y. Uzawa, T. Wada, H. Watanabe, B. Westbrook, N. Whitehorn, Y. Yamada, R. Yamamoto, N. Yamasaki, T. Yamashita, T. Yoshida, M. Yoshida, K. Yotsumoto   +137 more
semanticscholar   +1 more source

Generalized Chaplygin gas and cosmic microwave background radiation constraints

, 2003
We study the dependence of the location of the cosmic microwave background radiation peaks on the parameters of the generalized Chaplygin gas model, whose equation of state is given by $p=\ensuremath{-}A/{\ensuremath{\rho}}^{\ensuremath{\alpha}},$ where ...
M. C. Bento, O. Bertolami, A. A. Sen
semanticscholar   +1 more source

Small-scale primordial magnetic fields and anisotropies in the cosmic microwave background radiation

, 2013
It is shown that small-scale magnetic fields present before recombination induce baryonic density inhomogeneities of appreciable magnitude. The presence of such inhomogeneities changes the ionization history of the Universe, which in turn decreases the ...
K. Jedamzik, Tom Abel
semanticscholar   +1 more source

Discovering Relic Gravitational Waves in Cosmic Microwave Background Radiation

, 2007
The authority of J.A. Wheeler in many areas of gravitational physics is immense, and there is a connection with the study of relic gravitational waves as well. I begin with a brief description of Wheeler’s influence on this study.
L. Grishchuk
semanticscholar   +1 more source

Polarization of the cosmic microwave background radiation

Pramana, 1999
In re-ionized models, the measurement of polarization of CMBR can be a good criterion to narrow down the parameter space for cosmological models. A Vishniac-type effect in second order polarization over arc minute scales has been calculated. It has been shown that while the effect is very small (∼10−2 µK) for CDM models, it can be ...
openaire   +2 more sources

STOCHASTIC STABILIZATION OF THE COSMIC MICROWAVE BACKGROUND RADIATION

The Tenth Marcel Grossmann Meeting, 2006
Photon trajectories in models of the Universe that have constant negative spatial curvature are exponientially unstable. We demonstrate that they can be stabilized by additional randomm fluctuations in the curvature. The mechanism is analogous to the one responsible for stabilizing the stochastic Kapitza pendulum, We discuss the consequences for the ...
Dettmann, CP, Keating, JP, Prado, SD
openaire   +2 more sources

A Measurement of the Anisotropy in the Cosmic Microwave Background Radiation at Degree Angular Scales

, 1993
We detect anisotropy in celestial radiation at degree angular scales between 26 and 36 GHz. The fluctuations have the spectral index of the cosmic microwave background radiation. The rms amplitude, Δ rms , of the fluctuations in the data set is 33 -9 +10
Edward J. Wollack, N. Jarosik, C. Netterfield, L. Page, D. Wilkinson   +4 more
semanticscholar   +1 more source

Interpretation of observed cosmic microwave background radiation

Nature, 1977
It is argued that the 'surface of last scattering' of the observed microwave background radiation corresponds to the distribution of dust in galaxies or protogalaxies with a temperature of about 110 K at the epoch corresponding to Z roughly equal to 40.
Asoka Mendis, Hannes Alfvén
openaire   +2 more sources

Cosmic Microwave Background Radiation Constraints on a Modified Chaplygin Gas Model

, 2005
A modified Chaplygin gas model of unifying dark energy and dark matter with the exotic equation of state p = Bρ−(A/ρα), which can also explain the recent expansion of the universe, is investigated by means of constraining the location of the peak of the ...
Dao-Jun Liu, Xin-zhou Li
semanticscholar   +1 more source