Results 171 to 180 of about 256,877 (297)

Revisiting the A L Lensing Anomaly in Planck 2018 Temperature Data

open access: yesThe Astrophysical Journal
We revisit the lensing anomaly in the Planck 2018 temperature (TT) data and examine its robustness to frequency selection and additional sky masking. Our main findings are as follows.
Graeme E. Addison   +4 more
doaj   +1 more source

The temperature of the cosmic microwave background radiation at a frequency of 10 GHz [PDF]

open access: green, 1988
A. Kogut   +8 more
openalex   +1 more source

The Cosmic Microwave Background and $$H_0$$

open access: yes
The cosmic microwave background (CMB) offers a unique window into the early universe, providing insights into cosmological parameters like the Hubble constant. Recent precise measurements of the CMB by experiments like Planck seem to point to a lower value for the Hubble constant compared to some other measurements like those from Type Ia supernovae ...
Pablo Lemos, Paul Shah
openaire   +2 more sources

Testing Gaussianity, Homogeneity, and Isotropy with the Cosmic Microwave Background

open access: yesAdvances in Astronomy, 2010
We review the basic hypotheses which motivate the statistical framework used to analyze the cosmic microwave background, and how that framework can be enlarged as we relax those hypotheses.
L. Raul Abramo, Thiago S. Pereira
doaj   +1 more source

Post-inflationary reheating and perturbations of the cosmic microwave background [PDF]

open access: yesarXiv, 1997
We formulate a gradual dynamical transition from a power-law inflation era with a scalar field to a radiation era with no scalar field including inhomogeneous perturbations to the Friedmann- Robertson-Walker universe. We show that for the cosmic microwave background radiation fluctuations this is excellently approximated by a sudden transition, with ...
arxiv  

The Cosmic Microwave Background

open access: yes, 2013
The Cosmic Microwave Background (CMB) is one of the pillars on which the Big Bang theory relies. High-quality maps of this radiation strongly constrain the history of the Universe and its content. Such maps require accurate and sensitive measurements of tiny random features on a strong uniform background.
Hervé Dole, J.-M. Lamarre
openaire   +2 more sources

Application of novel analysis techniques to Cosmic Microwave Background astronomy [PDF]

open access: yesarXiv, 1999
The data from Cosmic Microwave Background (CMB) experiments are becoming more complex with each new experiment. A consistent way of analysing these data sets is required so that direct comparison is possible between the various experimental results. This thesis presents several techniques that can be used to analyse CMB data.
arxiv  

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