Results 91 to 100 of about 3,768 (214)

Fast End-to-End Framework for Cosmological Parameter Inference from Cosmic Microwave Background Data Using Machine Learning

The Astrophysical Journal Letters
Precise estimation of cosmological parameters from the cosmic microwave background (CMB) remains a central goal of modern cosmology and a key test of inflationary physics.
Larissa Santos, Camila P. Novaes, Elisa G. M. Ferreira, Carlo Baccigalupi   +3 more
doaj   +1 more source

Applications of cosmological perturbation theory [PDF]

, 2011
PhDCosmological perturbation theory is crucial for our understanding of the universe. The linear theory has been well understood for some time, however developing and applying the theory beyond linear order is currently at the forefront of research in
Christopherson, Adam J.
core  

Testing CCC+TL Cosmology with Observed Baryon Acoustic Oscillation Features

The Astrophysical Journal
The primary purpose of this paper is to see how well a recently proposed new model fits (a) the position of the baryon acoustic oscillation (BAO) features observed in the large-scale distribution of galaxies and (b) the angular size measured for the ...
Rajendra P. Gupta
doaj   +1 more source

Kolmogorov complexity as a descriptor of cosmic microwave background maps [PDF]

, 2002
The information theory approach is suggested to the Cosmic Microwave Background (CMB) problem for negatively curved homogeneous and isotropic Universe. Namely, the Kolmogorov complexity of anisotropy spots of Cosmic Microwave Background (CMB) radiation ...
V. G. Gurzadyan
core   +1 more source

Analysis of Polarized Dust Emission Using Data from the First Flight of SPIDER

The Astrophysical Journal
Using data from the first flight of Spider and from the Planck High Frequency Instrument, we probe the properties of polarized emission from interstellar dust in the Spider observing region.
P. A. R. Ade, M. Amiri, S. J. Benton, A. S. Bergman, R. Bihary, J. J. Bock, J. R. Bond, J. A. Bonetti, S. A. Bryan, H. C. Chiang, C. R. Contaldi, O. Doré, A. J. Duivenvoorden, H. K. Eriksen, J. P. Filippini, A. A. Fraisse, K. Freese, M. Galloway, A. E. Gambrel, N. N. Gandilo, K. Ganga, S. Gourapura, R. Gualtieri, J. E. Gudmundsson, M. Halpern, J. Hartley, M. Hasselfield, G. Hilton, W. Holmes, V. V. Hristov, Z. Huang, K. D. Irwin, W. C. Jones, A. Karakci, C. L. Kuo, Z. D. Kermish, J. S.-Y. Leung, S. Li, D. S. Y. Mak, P. V. Mason, K. Megerian, L. Moncelsi, T. A. Morford, J. M. Nagy, C. B. Netterfield, M. Nolta, R. O’Brient, B. Osherson, I. L. Padilla, B. Racine, A. S. Rahlin, C. Reintsema, J. E. Ruhl, M. C. Runyan, T. M. Ruud, J. A. Shariff, E. C. Shaw, C. Shiu, J. D. Soler, X. Song, A. Trangsrud, C. Tucker, R. S. Tucker, A. D. Turner, J. F. van der List, A. C. Weber, I. K. Wehus, D. V. Wiebe, E. Y. Young, Spider Collaboration   +69 more
doaj   +1 more source

Cosmic microwave background, where next? [PDF]

, 2009
After the fundamental contribution of Cosmic Microwave Background observations to define what is now known as the standard cosmological model, what lies ahead for the field?
Licia Verde
core  

What does cosmology teach us about non-gravitational properties of dark matter?

Nuclear Physics B
Cosmological observations provide our most robust evidence for dark matter that is (approximately) collisionless and cold, and furthermore can provide powerful tests of the non-gravitational properties of dark matter.
Tracy R. Slatyer
doaj   +1 more source

Attenuation of LHAASO PeVatrons by the Interstellar Radiation Field and Cosmic Microwave Background Radiation

The Astrophysical Journal
“PeVatrons” refer to astrophysical sources capable of accelerating particles to energies around 10 ^15 electron volts and higher, potentially contributing to the cosmic-ray spectrum in the knee region.
Jianli Zhang, YiQing Guo
doaj   +1 more source

Effects of Scattering of Radiation on Wormholes

Universe, 2018
Significant progress in the development of observational techniques gives us the hope to directly observe cosmological wormholes. We have collected basic effects produced by the scattering of radiation on wormholes, which can be used in observations ...
Alexander Kirillov, Elena Savelova
doaj   +1 more source

Cosmic microwave background [PDF]

, 1999
This chapter describes the origin and characteristics of the Cosmic Microwave Background radiation, the source of most of the millimeter wave photons in the universe.
Philip Mauskopf, Mauskopf, Philip Daniel
core   +1 more source