Results 21 to 30 of about 128,427 (267)

The Atacama Cosmology Telescope: a measurement of the Cosmic Microwave Background power spectra at 98 and 150 GHz [PDF]

Journal of Cosmology and Astroparticle Physics, 2020
We present the temperature and polarization angular power spectra of the CMB measured by the Atacama Cosmology Telescope (ACT) from 5400 deg2 of the 2013–2016 survey, which covers >15000 deg2 at 98 and 150 GHz.
Steve K. Choi, M. Hasselfield, S. Ho, B. Koopman, M. Lungu, M. Abitbol, G. Addison, P. Ade, S. Aiola, D. Alonso, M. Amiri, S. Amodeo, Elio Angile, J. Austermann, T. Baildon, N. Battaglia, J. Beall, R. Bean, D. Becker, J. Bond, S. M. Bruno, E. Calabrese, V. Calafut, L. Campusano, Felipe Carrero, G. Chesmore, Hsiao-mei Cho., S. Clark, N. Cothard, D. Crichton, K. Crowley, O. Darwish, R. Datta, E. Denison, M. Devlin, C. Duell, S. Duff, A. Duivenvoorden, J. Dunkley, R. Dunner, T. Essinger-Hileman, M. Fankhanel, S. Ferraro, A. Fox, Brittany Fuzia, P. Gallardo, V. Gluscevic, J. Golec, E. Grace, M. Gralla, Y. Guan, K. Hall, M. Halpern, Dongwon Han, P. Hargrave, S. Henderson, B. Hensley, J. Hill, G. Hilton, M. Hilton, A. Hincks, R. Hlovzek, J. Hubmayr, K. Huffenberger, J. Hughes, L. Infante, K. Irwin, Rebecca Jackson, J. Klein, K. Knowles, A. Kosowsky, Vincent Lakey, Dale Li, Yaqiong Li, Zack Li, M. Lokken, T. Louis, A. Macinnis, M. Madhavacheril, F. Maldonado, M. Mallaby-Kay, D. Marsden, L. Maurin, J. McMahon, F. Menanteau, K. Moodley, Tim Morton, S. Naess, T. Namikawa, F. Nati, L. Newburgh, J. Nibarger, A. Nicola, M. Niemack, M. Nolta, John Orlowski-Sherer, L. Page, C. Pappas, B. Partridge, P. Phakathi, H. Prince, R. Puddu, F. Qu, J. Rivera, N. Robertson, F. Rojas, M. Salatino, E. Schaan, A. Schillaci, B. Schmitt, N. Sehgal, B. Sherwin, C. Sierra, J. Sievers, C. Sifón, P. Sikhosana, S. Simon, D. Spergel, S. Staggs, J. Stevens, E. Storer, D. Sunder, E. Switzer, B. Thorne, R. Thornton, H. Trac, J. Treu, C. Tucker, L. Vale, A. V. Engelen, J. Lanen, E. Vavagiakis, K. Wagoner, Yuhan Wang, J. Ward, Edward J. Wollack, Zhilei Xu, Fernando Zago, N. Zhu   +138 more
semanticscholar   +1 more source

Fast emulation of anisotropies induced in the cosmic microwave background by cosmic strings

The Open Journal of Astrophysics, 2023
Cosmic strings are linear topological defects that may have been produced during symmetry-breaking phase transitions in the very early Universe. In an expanding Universe the existence of causally separate regions prevents such symmetries from being ...
Matthew A. Price, Matthijs Mars, Matthew M. Docherty, Alessio Spurio Mancini, Augustin Marignier, Jason D. McEwen   +5 more
doaj   +2 more sources

Microwaves Are Everywhere “CMB: Hiding in Plain Sight”

IEEE Journal of Microwaves, 2021
This article is the first in a continuing series of general interest papers on the applications of microwaves in areas of science and technology that might not be evident to the casual observer.
Peter H. Siegel
doaj   +1 more source

The Boltzmann equation and Cosmic Microwave Background

Revista de Investigación de Física, 2023
Observations on the anisotropies of the Cosmic Microwave Background (CMB) have become a fundamental tool in Cosmology. We present a brief description of the mformalism necessary to understand the evolution of the anisotropies, and how their power ...
Mississippi Valenzuela
doaj   +1 more source

Cosmic microwave background bounds on primordial black holes including dark matter halo accretion [PDF]

, 2020
Even if massive ($10\,M_\odot \lesssim M \lesssim 10^4 M_\odot$) primordial black holes (PBHs) can only account for a small fraction of the dark matter (DM) in the universe, they may still be responsible for a sizable fraction of the coalescence events ...
P. Serpico, V. Poulin, Derek Inman, K. Kohri   +3 more
semanticscholar   +1 more source

The Cosmic Microwave Background Spectrum from the Full COBE FIRAS Data Set [PDF]

, 1996
We have refined the analysis of the data from the FIRAS (Far-InfraRed Absolute Spectrophotometer) on board the COBE (COsmic Background Explorer). The FIRAS measures the difference between the cosmic microwave background and a precise blackbody spectrum ...
D. Fixsen, E. Cheng, J. Gales, J. Mather, R. Shafer, E. L. Wright   +5 more
semanticscholar   +1 more source

New horizons in cosmology with spectral distortions of the cosmic microwave background [PDF]

Experimental astronomy (Print), 2019
This Voyage 2050 paper highlights the unique science opportunities using spectral distortions of the cosmic microwave background (CMB). CMB spectral distortions probe many processes throughout the history of the Universe, delivering novel information ...
J. Chluba, M. Abitbol, N. Aghanim, Y. Ali-Haimoud, M. Alvarez, K. Basu, B. Bolliet, C. Burigana, P. Bernardis, J. Delabrouille, E. Dimastrogiovanni, F. Finelli, D. Fixsen, Luke Hart, C. Hernandez-Monteagudo, J. Hill, A. Kogut, K. Kohri, J. Lesgourgues, B. Maffei, J. Mather, S. Mukherjee, S. Patil, A. Ravenni, M. Remazeilles, A. Rotti, J. Rubiño-Martín, J. Silk, R. Sunyaev, E. Switzer   +29 more
semanticscholar   +1 more source

Anisotropies of the cosmic microwave background [PDF]

La Rivista del Nuovo Cimento, 2002
We review the present status of Cosmic Microwave Background (CMB) anisotropy observations and discuss the main related astrophysical issues, instrumental effects and data analysis techniques. We summarise the balloon-borne and ground-based experiments that, after COBE-DMR, yielded detection or significant upper limits to CMB fluctuations.
M. Bersanelli, D. Maino, A. Mennella
openaire   +5 more sources

A Measurement of the Cosmic Microwave Background Lensing Potential and Power Spectrum from 500 deg2 of SPTpol Temperature and Polarization Data [PDF]

Astrophysical Journal, 2019
We present a measurement of the cosmic microwave background lensing potential using 500 deg2 of 150 GHz data from the SPTpol receiver on the South Pole Telescope.
W. L. K. Wu, L. Mocanu, P. Ade, A. Anderson, J. Austermann, J. Avva, J. Beall, A. Bender, B. Benson, F. Bianchini, L. Bleem, J. Carlstrom, C. Chang, H. Chiang, R. Citron, C. C. Moran, T. Crawford, A. Crites, T. Haan, M. Dobbs, W. Everett, J. Gallicchio, E. George, A. Gilbert, Namit Gupta, N. Halverson, N. Harrington, J. Henning, G. Hilton, G. Holder, W. Holzapfel, Z. Hou, J. Hrubeš, N. Huang, J. Hubmayr, K. Irwin, L. Knox, A. Lee, D. Li, A. Lowitz, A. Manzotti, J. McMahon, S. Meyer, M. Millea, J. Montgomery, A. Nadolski, T. Natoli, J. Nibarger, G. Noble, V. Novosad, Y. Omori, S. Padin, S. Patil, C. Pryke, C. Reichardt, J. Ruhl, B. Saliwanchik, J. Sayre, K. Schaffer, C. Sievers, G. Simard, G. Smecher, A. Stark, K. Story, C. Tucker, K. Vanderlinde, T. Veach, J. Vieira, G. Wang, N. Whitehorn, V. Yefremenko   +70 more
semanticscholar   +1 more source

Evolution of the cosmic microwave background [PDF]

Physical Review D, 2007
We discuss the time dependence and future of the Cosmic Microwave Background (CMB) in the context of the standard cosmological model, in which we are now entering a state of endless accelerated expansion. The mean temperature will simply decrease until it reaches the effective temperature of the de Sitter vacuum, while the dipole will oscillate as the ...
J. P. Zibin, Adam Moss, Douglas Scott
openaire   +3 more sources