Results 141 to 150 of about 132,304 (298)

The Polarization Signature of Local Bulk Flows

, 2013
A large peculiar velocity of the intergalactic medium produces a Doppler shift of the cosmic microwave background with a frequency-dependent quadrupole term.
Holder, Gilbert, Roebber, Elinore
core   +1 more source

Maps of the Cosmos: The Cosmic Microwave Background

, 2004
Since the IAU XXIV meeting in 2000, the CMB anisotropy has matured from being one of a number of cosmological probes to forming the bedrock foundation for what is now the standard model of cosmology. The large advances over the past three years have come
Benoit, Bernardeau, Bock, Crittenden, Doroskevich, Hu, Pospieszalski, Spergel, Sunyaev, Sunyaev, Wilkinson   +10 more
core   +1 more source

Forecast of Foreground Cleaning Strategies for AliCPT-1

The Astrophysical Journal Supplement Series
We report the test results of several independent foreground cleaning pipelines used in the Ali CMB Polarization Telescope experiment (AliCPT-1), a high-altitude cosmic microwave background (CMB) imager in the Northern Hemisphere with thousands of ...
Junzhou Zhang, Shamik Ghosh, Jiazheng Dou, Yang Liu, Siyu Li, Jiming Chen, Jiaxin Wang, Zhaoxuan Zhang, Jacques Delabrouille, Mathieu Remazeilles, Chang Feng, Bin Hu, Hao Liu, Larissa Santos, Pengjie Zhang, Wen Zhao, Le Zhang, Zhi-Qi Huang, Hong Li, Xinmin Zhang   +19 more
doaj   +1 more source

Betti Functionals as Probes for Cosmic Topology

Universe
The question of the global topology of the Universe (cosmic topology) is still open. In the ΛCDM concordance model, it is assumed that the space of the Universe possesses the trivial topology of R3, and thus that the Universe has an infinite volume.
Ralf Aurich, Frank Steiner
doaj   +1 more source

IMPACTS OF DARK STARS ON REIONIZATION AND SIGNATURES IN THE COSMIC MICROWAVE BACKGROUND [PDF]

, 2011
Pat Scott, Aparna Venkatesan, Elinore Roebber, Paolo Gondolo, E. Pierpaoli, G. P. Holder   +5 more
openalex   +1 more source

ƒ(R) Gravity, Relic Coherent Gravitons and Optical Chaos

Galaxies, 2014
We discuss the production of massive relic coherent gravitons in a particular class of ƒ(R) gravity, which arises from string theory, and their possible imprint in the Cosmic Microwave Background.
Lawrence B. Crowell, Christian Corda
doaj   +1 more source

A Limit on the Large Angular Scale Polarization of the Cosmic Microwave Background [PDF]

, 2001
Brian Keating, C. O’Dell, A. de Oliveira‐Costa, Slade Klawikowski, Nate C. Stebor, Lucio Piccirillo, Max Tegmark, Peter Timbie   +7 more
openalex   +1 more source

Planck Dust Polarization Power Spectra Are Consistent with Strongly Supersonic Turbulence

The Astrophysical Journal
The polarization of the cosmic microwave background is rich in information but obscured by foreground emission from the Milky Way’s interstellar medium (ISM). To uncover relationships between the underlying turbulent ISM and the foreground power spectra,
Kye A. Stalpes, David C. Collins, Kevin M. Huffenberger   +2 more
doaj   +1 more source

Standard Clock in primordial density perturbations and cosmic microwave background

Physics Letters B, 2014
Standard Clocks in the primordial epoch leave a special type of features in the primordial perturbations, which can be used to directly measure the scale factor of the primordial universe as a function of time a(t), thus discriminating between inflation ...
Xingang Chen, Mohammad Hossein Namjoo
doaj   +1 more source

Archeops' results on the Cosmic Microwave Background [PDF]

, 2003
S. Henrot–Versillé
openalex   +1 more source