Results 1 to 10 of about 54,663 (235)

Revisiting cosmic microwave background radiation using blackbody radiation inversion [PDF]

open access: yesScientific Reports, 2021
Blackbody radiation inversion is a mathematical process for the determination of probability distribution of temperature from measured radiated power spectrum.
Koustav Konar, Kingshuk Bose, R. K. Paul
doaj   +5 more sources

Cosmic Needles versus Cosmic Microwave Background Radiation [PDF]

open access: bronzeThe Astrophysical Journal, 2002
It has been suggested by a number of authors that the 2.7K cosmic microwave background (CMB) radiation might have arisen from the radiation from Population III objects thermalized by conducting cosmic graphite/iron needle-shaped dust.
Aguirre A. N.   +16 more
core   +5 more sources

Neutrinos and Big Bang Nucleosynthesis [PDF]

open access: yesAdvances in High Energy Physics, 2012
According to the standard models of particle physics and cosmology, there should be a background of cosmic neutrinos in the present Universe, similar to the cosmic microwave photon background.
Gary Steigman
doaj   +5 more sources

Testing Isotropy of Cosmic Microwave Background Radiation [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2007
We introduce new symmetry-based methods to test for isotropy in cosmic microwave background radiation. Each angular multipole is factored into unique products of power eigenvectors, related multipoles and singular values that provide 2 new rotationally ...
Jain, Pankaj   +3 more
core   +4 more sources

Long range correlation in cosmic microwave background radiation [PDF]

open access: yesPhysical Review E, 2011
We investigate the statistical anisotropy and Gaussianity of temperature fluctuations of Cosmic Microwave Background radiation (CMB) data from {\it Wilkinson Microwave Anisotropy Probe} survey, using the multifractal detrended fluctuation analysis ...
C. L. Alados   +17 more
core   +3 more sources

Primordial Gravitational Waves and Cosmic Microwave Background Radiation [PDF]

open access: greenThe Twelfth Marcel Grossmann Meeting, 2010
A summary of presentations delivered at the OC1 parallel session "Primordial Gravitational Waves and the CMB" of the 12th Marcel Grossmann Meeting on General Relativity (Paris, 12-18 July 2009). To be published in the Proceedings of the MG12. 18 pages, 8 (colour) figures.
D. Baskaran, L. P. Grishchuk, Wen Zhao
openalex   +4 more sources

The cosmic microwave background radiation temperature at z = 3.025 toward QSO 0347--3819 [PDF]

open access: green, 2001
From the analysis of the CII fine-structure population ratio in the damped Ly_alpha system at z = 3.025 toward the quasar Q0347--3819 we derive an upper bound of 14.6 (+/- 0.2) K on the cosmic microwave background temperature regardless the presence of ...
Bahcall   +21 more
core   +3 more sources

Different Explanations for the Cosmic Microwave Background Radiation

open access: green, 2021
In this research, the other reasonable explanations for the cosmic microwave background radiation is revealed. Due to the microwave resolution, it very roughly shows the image of galaxies in the universe. Moreover, the intensity measurement on each pixel of the image is the sum of the incident microwaves from different directions, so the microwave ...
Ting-Hang Pei
openalex   +3 more sources

Nuclear Physics Meets the Sources of the Ultra-High Energy Cosmic Rays [PDF]

open access: yesScientific Reports, 2017
The determination of the injection composition of cosmic ray nuclei within astrophysical sources requires sufficiently accurate descriptions of the source physics and the propagation – apart from controlling astrophysical uncertainties.
Denise Boncioli   +2 more
doaj   +2 more sources

Characteristic angular scales in cosmic microwave background radiation [PDF]

open access: greenJournal of Statistical Mechanics: Theory and Experiment, 2006
10 pages, 8 figures Accepted in J.
Fatemeh Ghasemi   +5 more
openalex   +5 more sources

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