EMPRESS. VIII. A New Determination of Primordial He Abundance with Extremely Metal-Poor Galaxies: A Suggestion of the Lepton Asymmetry and Implications for the Hubble Tension

The primordial He abundance \(Y_\mathrm{P}\) is a powerful probe of cosmology. Currently, \(Y_\mathrm{P}\) is best determined by observations of metal-poor galaxies, while there are only a few known local extremely metal-poor (\(

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Bibliographic Details
Published in:arXiv.org 2022-11
Main Authors: Matsumoto, Akinori, Ouchi, Masami, Nakajima, Kimihiko, Kawasaki, Masahiro, Murai, Kai, Motohara, Kentaro, Harikane, Yuichi, Ono, Yoshiaki, Kushibiki, Kosuke, Koyama, Shuhei, Aoyama, Shohei, Konishi, Masahiro, Takahashi, Hidenori, Isobe, Yuki, Umeda, Hiroya, Sugahara, Yuma, Onodera, Masato, Nagamine, Kentaro, Kusakabe, Haruka, Hirai, Yutaka, Moriya, Takashi J, Shibuya, Takatoshi, Komiyama, Yutaka, Fukushima, Keita, Fujimoto, Seiji, Hattori, Takashi, Hayashi, Kohei, Inoue, Akio K, Kikuchihara, Shotaro, Kojima, Takashi, Koyama, Yusei, Lee, Chien-Hsiu, Mawatari, Ken, Miyata, Takashi, Nagao, Tohru, Ozaki, Shinobu, Rauch, Michael, Saito, Tomoki, Suzuki, Akihiro, Takeuchi, Tsutomu T, Umemura, Masayuki, Xu, Yi, Yabe, Kiyoto, Zhang, Yechi, Yoshii, Yuzuru
Format: Article
Language:English
Subjects:
Algorithms
Astronomical models
Asymmetry
Cosmology
Deuterium
Electrons
Galaxies
Helium
Leptons
Markov chains
Near infrared radiation
Neutrinos
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Description
Summary:The primordial He abundance \(Y_\mathrm{P}\) is a powerful probe of cosmology. Currently, \(Y_\mathrm{P}\) is best determined by observations of metal-poor galaxies, while there are only a few known local extremely metal-poor (\(
ISSN:2331-8422
DOI:10.48550/arxiv.2203.09617