Zobrazeno 1 - 10
of 635
pro vyhledávání: '"LI Si-yu"'
The study of cosmic birefringence through Cosmic Microwave Background (CMB) experiments is a key research area in cosmology and particle physics, providing a critical test for Lorentz and CPT symmetries. This paper focuses on an upcoming CMB experime
Externí odkaz:
http://arxiv.org/abs/2409.01098
In our previous study, we introduced a machine-learning technique, namely CMBFSCNN, for the removal of foreground contamination in cosmic microwave background (CMB) polarization data. This method was successfully employed on actual observational data
Externí odkaz:
http://arxiv.org/abs/2406.17685
Publikováno v:
JCAP04 (2024) 014
The Internal Linear Combination (ILC) method is commonly employed to extract the cosmic microwave background (CMB) signal from multi-frequency observation maps. However, the performance of the ILC method tends to degrade when the signal-to-noise rati
Externí odkaz:
http://arxiv.org/abs/2309.08170
Autor:
Li, Kaihui, Yin, Long-Jing, Che, Chenglong, Liu, Xueying, Xiao, Yulong, Liu, Songlong, Tong, Qingjun, Li, Si-Yu, Pan, Anlian
Strongly correlated states are commonly emerged in twisted bilayer graphene (TBG) with magic-angle, where the electron-electron (e-e) interaction U becomes prominent relative to the small bandwidth W of the nearly flat band. However, the stringent re
Externí odkaz:
http://arxiv.org/abs/2307.04170
The lensing effect of the cosmic microwave background (CMB) is a powerful tool for our study of the distribution of matter in the universe. Currently, the quadratic estimator (EQ) method, which is widely used to reconstruct lensing potential, has bee
Externí odkaz:
http://arxiv.org/abs/2306.01516
Primordial B-mode detection is one of the main goals of next-generation cosmic microwave background (CMB) experiments. Primordial B-modes are a unique signature of primordial gravitational waves (PGWs). However, the gravitational interaction of CMB p
Externí odkaz:
http://arxiv.org/abs/2305.02490
Autor:
Zhang, Zi-Xuan, Wang, Yi-Ming, Cang, Junsong, Zhang, Zirui, Liu, Yang, Li, Si-Yu, Gao, Yu, Li, Hong
Publikováno v:
JCAP 10, 002(2023)
The energy injected from dark matter annihilation and decay processes potentially raises the ionisation of the intergalactic medium and leaves visible footprints on the anisotropy maps of the cosmic microwave background (CMB). Galactic foregrounds em
Externí odkaz:
http://arxiv.org/abs/2304.07793
Publikováno v:
Astrophys.J. 947 (2023) 1, 29
Primordial B-mode detection is one of the main goals of current and future cosmic microwave background (CMB) experiments. However, the weak B-mode signal is overshadowed by several Galactic polarized emissions, such as thermal dust emission and synch
Externí odkaz:
http://arxiv.org/abs/2302.13572
Time-ordered data (TOD) from ground-based CMB experiments are generally filtered before map-making to remove or reduce the contamination from the ground and the atmospheric emissions. However, when the observation region contains strong point sources
Externí odkaz:
http://arxiv.org/abs/2211.13870
Autor:
Wang, Guo-Jian, Shi, Hong-Liang, Yan, Ye-Peng, Xia, Jun-Qing, Zhao, Yan-Yun, Li, Si-Yu, Li, Jun-Feng
Publikováno v:
Astrophys.J.Supp. 260 (2022) 1, 13
The cosmic microwave background (CMB), carrying the inhomogeneous information of the very early universe, is of great significance for understanding the origin and evolution of our universe. However, observational CMB maps contain serious foreground
Externí odkaz:
http://arxiv.org/abs/2204.01820