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pro vyhledávání: '"Lu, Youjun"'
The gravitational waves (GWs) from supermassive binary black holes (BBHs) are long sought by pulsar timing array experiments (PTAs), in the forms of both a stochastic GW background (GWB) and individual sources. The evidence for a GWB was reported rec
Externí odkaz:
http://arxiv.org/abs/2409.18029
Autor:
Huang, Yang, Feng, Qikang, Khachaturyants, Tigran, Zhang, Huawei, Liu, Jifeng, Shen, Juntai, Beers, Timothy C., Lu, Youjun, Wang, Song, Yuan, Haibo
In this reply, we present a comprehensive analysis addressing the concerns raised by Dehnen et al. (2024) regarding our recent measurement of the disk warp precession using the `motion-picture' method (Huang et al. 2024). We carefully examine the imp
Externí odkaz:
http://arxiv.org/abs/2409.02734
The cosmic variance on the star formation history may lead to bias to the merger rate density estimation of binary neutron star (BNS) mergers by the compact binary population synthesis. In this paper, we take the advantage of the large boxsize of the
Externí odkaz:
http://arxiv.org/abs/2408.16968
Autor:
Zheng, Chuanjie, Huang, Yang, Liu, Jifeng, Lu, Youjun, Han, Henggeng, Tan, Yuan, Beers, Timothy C.
The Doppler beaming effect, induced by the reflex motion of stars, introduces flux modulations and serves as an efficient method to photometrically determine mass functions for a large number of close binary systems, particularly those involving comp
Externí odkaz:
http://arxiv.org/abs/2408.01033
Autor:
Huang, Yang, Feng, Qikang, Khachaturyants, Tigran, Zhang, Huawei, Liu, Jifeng, Shen, Juntai, Beers, Timothy C., Lu, Youjun, Wang, Song, Yuan, Haibo
The shape of the dark matter (DM) halo is key to understanding the hierarchical formation of the Galaxy. Despite extensive efforts in recent decades, however, its shape remains a matter of debate, with suggestions ranging from strongly oblate to prol
Externí odkaz:
http://arxiv.org/abs/2407.00319
The existence of intermediate-mass black holes (IMBHs) is crucial for understanding various astrophysical phenomena, yet their existence remains elusive, except for the LIGO-Virgo detection. We report the discovery of a high-velocity star J0731+3717,
Externí odkaz:
http://arxiv.org/abs/2406.00923
Publikováno v:
A&A 687, A57 (2024)
Context. Periodic QSOs are considered as candidates of supermassive binary black hole (BBH) systems in galactic centers. Further confirmation of these candidates may require different lines of observational evidences. Aims. Assuming the Doopler boost
Externí odkaz:
http://arxiv.org/abs/2404.05975
Autor:
Tan, Yuan, Lu, Youjun
A number of modified gravity theories (e.g., $f(R)$-gravity) lead to a Yukawa-like metric in the weak field limit which can be described by two Yukawa parameters, i.e., the strength $\kappa$ and the length scale $\lambda$. The S-stars, orbiting aroun
Externí odkaz:
http://arxiv.org/abs/2402.00333
A large number of binary neutron star (BNS) mergers are expected to be detected by gravitational wave (GW) detectors and the electromagnetic (EM) counterparts (e.g., kilonovae) of a fraction of these mergers may be detected in multi-bands by large ar
Externí odkaz:
http://arxiv.org/abs/2401.03710
More than 100 tidal disruption events (TDEs) have been detected at multi-bands, which can be viewed as extreme laboratories to investigate the accretion physics and gravity in the immediate vicinity of massive black holes. Future transient surveys ar
Externí odkaz:
http://arxiv.org/abs/2401.00992