Zobrazeno 1 - 10
of 20 648
pro vyhledávání: '"cosmic microwave background"'
Autor:
Georg Wolschin
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-10 (2024)
Abstract During recombination, the cosmic background radiation is disturbed, in particular, by Lyman-alpha emissions from neutral hydrogen. It is proposed to account for the subsequent time-dependent partial thermalization of the Ly $$\alpha$$ α ene
Externí odkaz:
https://doaj.org/article/d4335e41692d455eb4846ac1d5672d67
Autor:
Leonid S. Revin, Dmitry A. Pimanov, Alexander V. Chiginev, Anton V. Blagodatkin, Viktor O. Zbrozhek, Andrey V. Samartsev, Anastasia N. Orlova, Dmitry V. Masterov, Alexey E. Parafin, Victoria Yu. Safonova, Anna V. Gordeeva, Andrey L. Pankratov, Leonid S. Kuzmin, Anatolie S. Sidorenko, Silvia Masi, Paolo de Bernardis
Publikováno v:
Beilstein Journal of Nanotechnology, Vol 15, Iss 1, Pp 26-36 (2024)
We consider properties of dichroic antenna arrays on a silicon substrate with integrated cold-electron bolometers to detect radiation at frequencies of 210 and 240 GHz. This frequency range is widely used in cosmic microwave background experiments in
Externí odkaz:
https://doaj.org/article/4aed23b461f24a049dd839861422ce25
Autor:
Jingwei Liu, Fulvio Melia
Publikováno v:
Physics Letters B, Vol 853, Iss , Pp 138645- (2024)
The absence of large-angle correlations in the temperature of the cosmic microwave background (CMB), confirmed by three independent satellite missions, creates significant tension with the standard model of cosmology. Previous work has shown, however
Externí odkaz:
https://doaj.org/article/37c26f07c74845f2b39b6f3715c277d8
Publikováno v:
Physics Letters B, Vol 852, Iss , Pp 138607- (2024)
Extending previous results, we explore aspects of the reheating mechanism for non-minimal Higgs inflation in the strong coupling regime. We constrain the radiative corrections for the inflaton's potential by considering the Coleman-Weinberg approxima
Externí odkaz:
https://doaj.org/article/6140322faf1e440bb0bed1555bde5e4a
Autor:
Ralf Hofmann, Janning Meinert
Publikováno v:
Astronomy, Vol 2, Iss 4, Pp 286-299 (2023)
We point out that a modified temperature–redshift relation (T-z relation) of the cosmic microwave background (CMB) cannot be deduced by any observational method that appeals to an a priori thermalisation to the CMB temperature T of the excited stat
Externí odkaz:
https://doaj.org/article/7bc2ed43dde94524ac3c2815111f65d4
Autor:
Steane, Andrew, author
Publikováno v:
Liberating Science: The Early Universe, Evolution and the Public Voice of Science, 2023, ill.
Externí odkaz:
https://doi.org/10.1093/oso/9780198878551.003.0007
Publikováno v:
Sensors, Vol 24, Iss 11, p 3600 (2024)
This research unveils a cutting-edge navigation system for deep space missions that utilizes cosmic microwave background (CMB) sensor readings to enhance spacecraft positioning and velocity estimation accuracy significantly. By exploiting the Doppler
Externí odkaz:
https://doaj.org/article/ac6955ae2752459e9a311dd733cc18f2
Autor:
Ralf Aurich, Frank Steiner
Publikováno v:
Universe, Vol 10, Iss 5, p 190 (2024)
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.
Externí odkaz:
https://doaj.org/article/17b066a2ed2f4839a3c38e9d9842d480
Publikováno v:
JPFT (Jurnal Pendidikan Fisika dan Teknologi), Vol 9, Iss 2 (2023)
This paper elaborates on the results of an exhaustive study regarding the Earth's position in the universe based on the Cosmic Microwave Background (CMB) radiation map, which is the latest discovery in modern astronomy. CMB radiation provides crucial
Externí odkaz:
https://doaj.org/article/0e438576cf5147fe8ae456786ab14857
Autor:
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
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 274, Iss 2, p 26 (2024)
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 de
Externí odkaz:
https://doaj.org/article/fe96b4ecf58d4809801264df91d13c6e