Zobrazeno 1 - 10
of 166
pro vyhledávání: '"Tong-Jie Zhang"'
Publikováno v:
The Astrophysical Journal, Vol 972, Iss 1, p 14 (2024)
Dark energy is believed to be responsible for the acceleration of the Universe. In this paper, we reconstruct the dark energy scalar field potential V ( ϕ ) using the Hubble parameter H ( z ) through Gaussian process analysis. Our goal is to investi
Externí odkaz:
https://doaj.org/article/4180df9bd75c4b778813d1ecb81bcaa7
Autor:
Jian-Chen Zhang, Yu Hu, Kang Jiao, Hong-Feng Wang, Yuan-Bo Xie, Bo Yu, Li-Li Zhao, Tong-Jie Zhang
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 270, Iss 2, p 23 (2024)
Accurately measuring the Hubble parameter is vital for understanding the expansion history and properties of the Universe. In this paper, we propose a new method that supplements the covariance between redshift pairs to improve the reconstruction of
Externí odkaz:
https://doaj.org/article/516bcd6330334d4eae1207c560cfdc35
Publikováno v:
Universe, Vol 9, Iss 5, p 237 (2023)
The study of massive neutrinos and their interactions is a critical aspect of contemporary cosmology. Recent advances in parallel computation and high-performance computing provide new opportunities for accurately constraining Large-Scale Structures
Externí odkaz:
https://doaj.org/article/7cec9c17d302416690e54f0377c3770f
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 80, Iss 9, Pp 1-24 (2020)
Abstract Gravitational waves (GWs) from extra dimensions, very early universe, and some high-energy astrophysical processes might have at most six polarization states: tensor- and nontensor-mode gravitons. The peak regions or partial peak regions (of
Externí odkaz:
https://doaj.org/article/91a58f45ab614199a93e2d729e8247d2
Autor:
Jian-Kang Li, Yu Chen, Bo-Lun Huang, Zhen-Zhao Tao, Xiao-Hang Luan, Xiao-Hui Sun, Tong-Jie Zhang, Vishal Gajjar
Publikováno v:
The Astronomical Journal, Vol 167, Iss 1, p 8 (2023)
In this paper, we propose a novel method for distinguishing extraterrestrial intelligence (ETI) signals from radio frequency interference (RFI) by leveraging polarization features. We exploit the sinusoidal variation of the linearly polarized compone
Externí odkaz:
https://doaj.org/article/6ec47b97f46c4db38b9d2b765d367ed7
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 268, Iss 2, p 67 (2023)
Cosmology constraints serve as a crucial criterion in discriminating cosmological models. The traditional combined method to constrain the cosmological parameters designates the corresponding theoretical value and observational data as functions of r
Externí odkaz:
https://doaj.org/article/d1fc379ab9ad4a6892160b44b482c789
Autor:
Zhen-Zhao Tao, Bo-Lun Huang, Xiao-Hang Luan, Jian-Kang Li, Hai-Chen Zhao, Hong-Feng Wang, Tong-Jie Zhang
Publikováno v:
The Astronomical Journal, Vol 166, Iss 5, p 190 (2023)
Search for extraterrestrial intelligence (SETI) has been mainly focused on nearby stars and their planets in recent years. Barnard’s star is the second closest star system to the Sun and the closest star in the Five-hundred-meter Aperture Spherical
Externí odkaz:
https://doaj.org/article/76138ed7141b4496b3aae8a9ed24a2b5
Autor:
Yu-Chen Wang, Zhen-Zhao Tao, Zhi-Song Zhang, Cheqiu Lyu, Tingting Zhang, Tong-Jie Zhang, Dan Werthimer
Publikováno v:
The Astronomical Journal, Vol 166, Iss 4, p 146 (2023)
The search for extraterrestrial intelligence (SETI) commensal surveys aim to scan the sky to find possible technosignatures from an extraterrestrial intelligence (ETI). The mitigation of radio frequency interference (RFI) is an important step, especi
Externí odkaz:
https://doaj.org/article/9a5378e469314f9ea312b7846925289f
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 266, Iss 2, p 27 (2023)
The Gaussian process (GP) has gained much attention in cosmology due to its ability to reconstruct cosmological data in a model-independent manner. In this study, we compare two methods for GP kernel selection: approximate Bayesian computation (ABC)
Externí odkaz:
https://doaj.org/article/884199d4ec9748b2aa4d9aa83e3d8dbb
Autor:
Xiao-Hang Luan, Zhen-Zhao Tao, Hai-Chen Zhao, Bo-Lun Huang, Shi-Yu Li, Cong Liu, Hong-Feng Wang, Wen-Fei Liu, Tong-Jie Zhang, Vishal Gajjar, Dan Werthimer
Publikováno v:
The Astronomical Journal, Vol 165, Iss 3, p 132 (2023)
The search for extraterrestrial intelligence (SETI) is to search for technosignatures associated with extraterrestrial life, such as engineered radio signals. In this paper, we apply the multibeam coincidence matching (MBCM) strategy, and propose a n
Externí odkaz:
https://doaj.org/article/0d665f6fcdb54408b384b609bac7bbdf