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of 752
pro vyhledávání: '"LU Youjun"'
Binary neutron stars (BNSs) detected in the Milky Way have the total masses distributing narrowly around $\sim2.6-2.7M_\odot$, while the BNS merger GW190425 detected via gravitational wave has a significantly larger mass ($\sim3.4M_\odot$). This diff
Externí odkaz:
http://arxiv.org/abs/2412.15464
Massive black holes (MBHs) exist in the Galactic center (GC) and other nearby galactic nuclei. As natural outcome of galaxy mergers, some MBHs may have a black hole (BH) companion. In this paper, assuming that the MBHs in the GC and some nearby galax
Externí odkaz:
http://arxiv.org/abs/2411.14150
The Gravitation Wave (GW) signals from a large number of double white dwarfs (DWDs) in the Galaxy are expected to be detected by space GW detectors, e.g., the Laser Interferometer Space Antenna (LISA), Taiji, and Tianqin in the millihertz band. In th
Externí odkaz:
http://arxiv.org/abs/2411.09298
Gravitational waves (GWs) from stellar binary black hole (sBBH) mergers can be strongly gravitational lensed by intervening galaxies/galaxy clusters. Only a few works investigated the cluster-lensed sBBH mergers by adopting oversimplified models, whi
Externí odkaz:
http://arxiv.org/abs/2410.20701
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