Zobrazeno 1 - 10
of 934
pro vyhledávání: '"Cosmic microwave background radiation"'
Autor:
Shouvik Roy Choudhury, Teppei Okumura
Publikováno v:
The Astrophysical Journal Letters, Vol 976, Iss 1, p L11 (2024)
We present updated constraints on cosmological parameters in a 12-parameter model, extending the standard six-parameter ΛCDM by including dynamical dark energy (DE ; w _0 , w _a ), the sum of neutrino masses (∑ m _ν ), the effective number of non
Externí odkaz:
https://doaj.org/article/5c90997d737a4f0ebbfaee3ced0dc9b3
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
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 2, p 275 (2024)
The present work begins by examining the early-Universe inflationary epoch of a special K-essence model, which incorporates a linear coupling term between the scalar field potential and the canonical Lagrangian. For the power-law potential, we both n
Externí odkaz:
https://doaj.org/article/3df658731365474ab730ec35305d47eb
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 2, p 187 (2024)
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. (1) The phenomenological lensing amplitude parameter, A _L , varie
Externí odkaz:
https://doaj.org/article/3f5172d16f084b6b865173706e23018d
Autor:
Nicholas Galitzki, Tran Tsan, Jake Spisak, Michael Randall, Max Silva-Feaver, Joseph Seibert, Jacob Lashner, Shunsuke Adachi, Sean M. Adkins, Thomas Alford, Kam Arnold, Peter C. Ashton, Jason E. Austermann, Carlo Baccigalupi, Andrew Bazarko, James A. Beall, Sanah Bhimani, Bryce Bixler, Gabriele Coppi, Lance Corbett, Kevin D. Crowley, Kevin T. Crowley, Samuel Day-Weiss, Mark J. Devlin, Simon Dicker, Brooke DiGia, Peter N. Dow, Cody J. Duell, Shannon M. Duff, Remington G. Gerras, John C. Groh, Jon E. Gudmundsson, Kathleen Harrington, Masaya Hasegawa, Erin Healy, Shawn W. Henderson, Johannes Hubmayr, Jeffrey Iuliano, Bradley R. Johnson, Brian Keating, Ben Keller, Kenji Kiuchi, Anna M. Kofman, Brian J. Koopman, Akito Kusaka, Adrian T. Lee, Richard A. Lew, Lawrence T. Lin, Michael J. Link, Tammy J. Lucas, Marius Lungu, Aashrita Mangu, Jeffrey J McMahon, Amber D. Miller, Jenna E. Moore, Magdy Morshed, Hironobu Nakata, Federico Nati, Laura B. Newburgh, David V. Nguyen, Michael D. Niemack, Lyman A. Page, Kana Sakaguri, Yuki Sakurai, Mayuri Sathyanarayana Rao, Lauren J. Saunders, Jordan E. Shroyer, Junna Sugiyama, Osamu Tajima, Atsuto Takeuchi, Refilwe Tanah Bua, Grant Teply, Tomoki Terasaki, Joel N. Ullom, Jeffrey L. Van Lanen, Eve M. Vavagiakis, Michael R Vissers, Liam Walters, Yuhan Wang, Zhilei Xu, Kyohei Yamada, Kaiwen Zheng
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 274, Iss 2, p 33 (2024)
The Simons Observatory (SO) is a cosmic microwave background survey experiment that includes small-aperture telescopes (SATs) observing from an altitude of 5200 m in the Atacama Desert in Chile. The SO SATs will cover six spectral bands between 27 an
Externí odkaz:
https://doaj.org/article/ad1684f478ec47959daae6c020618735
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
Publikováno v:
The Astrophysical Journal, Vol 973, Iss 1, p 54 (2024)
Using 3D dust maps and Planck polarized dust emission data, we investigate the influence of the 3D geometry of the nearby interstellar medium (ISM) on the statistics of the dust polarization on large ( $80^{\prime} $ ) scales. We test recent models t
Externí odkaz:
https://doaj.org/article/c953cb7f5e2e4ad080e9eaacbb0934c0
Autor:
K. Prabhu, S. Raghunathan, M. Millea, G. P. Lynch, P. A. R. Ade, E. Anderes, A. J. Anderson, B. Ansarinejad, M. Archipley, L. Balkenhol, K. Benabed, A. N. Bender, B. A. Benson, F. Bianchini, L. E. Bleem, F. R. Bouchet, L. Bryant, E. Camphuis, J. E. Carlstrom, T. W. Cecil, C. L. Chang, P. Chaubal, P. M. Chichura, A. Chokshi, T.-L. Chou, A. Coerver, T. M. Crawford, A. Cukierman, C. Daley, T. de Haan, K. R. Dibert, M. A. Dobbs, A. Doussot, D. Dutcher, W. Everett, C. Feng, K. R. Ferguson, K. Fichman, A. Foster, S. Galli, A. E. Gambrel, R. W. Gardner, F. Ge, N. Goeckner-Wald, R. Gualtieri, F. Guidi, S. Guns, N. W. Halverson, E. Hivon, G. P. Holder, W. L. Holzapfel, J. C. Hood, A. Hryciuk, N. Huang, F. Kéruzoré, L. Knox, M. Korman, K. Kornoelje, C.-L. Kuo, A. T. Lee, K. Levy, A. E. Lowitz, C. Lu, A. Maniyar, F. Menanteau, J. Montgomery, Y. Nakato, T. Natoli, G. I. Noble, V. Novosad, Y. Omori, S. Padin, Z. Pan, P. Paschos, K. A. Phadke, A. W. Pollak, W. Quan, M. Rahimi, A. Rahlin, C. L. Reichardt, M. Rouble, J. E. Ruhl, E. Schiappucci, G. Smecher, J. A. Sobrin, A. A. Stark, J. Stephen, A. Suzuki, C. Tandoi, K. L. Thompson, B. Thorne, C. Trendafilova, C. Tucker, C. Umilta, A. Vitrier, J. D. Vieira, Y. Wan, G. Wang, N. Whitehorn, W. L. K. Wu, V. Yefremenko, M. R. Young, J. A. Zebrowski
Publikováno v:
The Astrophysical Journal, Vol 973, Iss 1, p 4 (2024)
We forecast constraints on cosmological parameters enabled by three surveys conducted with SPT-3G, the third-generation camera on the South Pole Telescope. The surveys cover separate regions of 1500, 2650, and 6000 deg ^2 to different depths, in tota
Externí odkaz:
https://doaj.org/article/3b77f96a6b2644aea0cd053a19eeb77c
Publikováno v:
The Astrophysical Journal, Vol 972, Iss 1, p 77 (2024)
We have studied the cosmic microwave background (CMB) map looking for features beyond cosmological isotropy. We began by tiling the CMB variance maps (which are produced by different smoothing scales) with stripes of different sizes along the most pr
Externí odkaz:
https://doaj.org/article/714bc33a1fcd4134bf607c8a755838c2
Publikováno v:
The Astrophysical Journal, Vol 972, Iss 1, p 26 (2024)
The polarization of the cosmic microwave background is rich in information but obscured by foreground emission from the Milky Way’s interstellar medium (ISM). To uncover relationships between the underlying turbulent ISM and the foreground power sp
Externí odkaz:
https://doaj.org/article/f59f1c1534ff4d6e937f3d0160cacefb