Wen-Biao Han
A5034266080- Pulsars and Gravitational Waves Research
- Astrophysical Phenomena and Observations
- Gamma-ray bursts and supernovae
- Cosmology and Gravitation Theories
- Geophysics and Gravity Measurements
- Astrophysics and Cosmic Phenomena
- Black Holes and Theoretical Physics
- Radio Astronomy Observations and Technology
- Geophysics and Sensor Technology
- Relativity and Gravitational Theory
- High-pressure geophysics and materials
- Galaxies: Formation, Evolution, Phenomena
- Atomic and Subatomic Physics Research
- Advanced Frequency and Time Standards
- Experimental and Theoretical Physics Studies
- Seismic Waves and Analysis
- Solar and Space Plasma Dynamics
- Quantum chaos and dynamical systems
- GNSS positioning and interference
- Adaptive optics and wavefront sensing
- Dark Matter and Cosmic Phenomena
- Stellar, planetary, and galactic studies
- Trigeminal Neuralgia and Treatments
- Cold Atom Physics and Bose-Einstein Condensates
- Quantum and Classical Electrodynamics
Shanghai Astronomical Observatory
2016-2025
University of Chinese Academy of Sciences
2008-2025
Frontier Science Foundation
2025
International Centre for Theoretical Physics Asia-Pacific
2020-2024
Second Hospital of Hebei Medical University
2020-2024
Chinese Academy of Sciences
2007-2024
Hebei Medical University
2020-2024
University of Jinan
2023
Wuhan University
2023
Weifang University
2023
Abstract The Laser Interferometer Space Antenna (LISA) will be a transformative experiment for gravitational wave astronomy, and, as such, it offer unique opportunities to address many key astrophysical questions in completely novel way. synergy with ground-based and space-born instruments the electromagnetic domain, by enabling multi-messenger observations, add further discovery potential of LISA. next decade is crucial prepare community LISA’s first observations. This review outlines...
The Laser Interferometer Space Antenna (LISA) has the potential to reveal wonders about fundamental theory of nature at play in extreme gravity regime, where gravitational interaction is both strong and dynamical. In this white paper, Fundamental Physics Working Group LISA Consortium summarizes current topics physics observations GWs can be expected provide key input. We briefest reviews then delineate avenues for future research directions discuss connections between working group, other...
Binary black hole systems are among the most important sources for gravitational wave detection. They also good objects theoretical research general relativity. A waveform template is to data analysis. An effective-one-body-numerical-relativity (EOBNR) model has played an essential role in LIGO For future space-based detection, many binary will admit a somewhat orbit eccentricity. At same time, eccentric interesting topic study In this paper, we construct first based on framework. Our basic...
KAGRA is a newly built gravitational wave observatory, laser interferometer with 3 km arm length, located in Kamioka, Gifu, Japan. In this series of articles, we present an overview the baseline KAGRA, for which finished installing designed configuration 2019. This article describes method calibration (CAL) used reconstructing signals from detector outputs, as well characterization (DET). We also review physical environmental monitors (PEM) system and geophysics (GIF). Both are...
We have explored the effect of both uniform and nonuniform distributed plasma medium on gravitational lensing around static black hole in presence perfect fluid dark matter (PFDM). shown that PFDM parameters has opposite change value deflection angle light rays. It been also decreases total magnification image sources while causes effect. Finally, we analyzed shadow cast by surrounded plasma. The increase parameter decrease size hole.
Extreme-mass-ratio inspiral (EMRI) is an important gravitational-wave (GW) source and it normally consists of one stellar-mass black hole (BH) whirling closely around a supermassive (SMBH). In this Letter, we demonstrate that the small body, in fact, could be BH binary (BHB). Previous numerical scatting experiments have shown SMBHs can tidally capture BHBs to bound orbits. Here investigate subsequent long-term evolution. We find those with semi-major axis $a\lesssim5\times10^{-3}$ AU...
Abstract KAGRA is a newly build gravitational wave observatory, laser interferometer with 3 km arm length, located in Kamioka, Gifu, Japan. In this paper, one of series articles featuring KAGRA, we discuss the science targets projects, considering not only baseline (current design) but also its future upgrade candidates (KAGRA+) for near to middle term ($\sim$5 years).
We study the properties of spacetime around a regular nonminimal magnetic black hole (BH) together with dynamics neutral, magnetized, and magnetically charged particles in its vicinity. The dependence values curvature invariants outer event horizon corresponding to extreme charge BH from coupling parameter are studied detail. Our test particle motion shows that innermost stable circular orbit (ISCO) radius decreases increase BH. show ISCO is due decrease value charge. In particular, when...
KAGRA is a gravitational-wave (GW) detector constructed in Japan with two unique key features: It was underground, and the test-mass mirrors are cooled to cryogenic temperatures. These features not included other kilometer-scale detectors but will be adopted future such as Einstein Telescope. performed its first joint observation run GEO600 2020. In this observation, sensitivity of GWs inferior that LIGO Virgo. However, further upgrades ongoing reach for detecting next run, which scheduled...
It was shown that the dark matter (DM) minihalo around an intermediate mass black hole (IMBH) can be redistributed into a cusp, called DM minispike. We consider intermediate-mass-ratio inspiral consisting of IMBH harbored in minispike with nonannihilating particles and small (BH) orbiting it. investigate gravitational waves (GWs) produced by this system analyze waveforms comprehensive consideration pull, dynamical friction accretion calculate time difference phase caused find for certain...
LISA is considered to be launched alongside the Athena probe energetic astrophysical processes. can determine direction of sources for Athena's follow-up observation. As another space gravitational wave mission, TAIJI expected in 2030s. The LISA-TAIJI network would provide abundant merits understanding. In this work, we simulate joint observations waves from coalescing supermassive black hole binaries and monochromatic sources. By using numerical mission orbits, evaluate performances sky...
In this paper we have investigated the dynamics of neutral, electrically charged and magnetized particles around renormalized group improved (RGI) Schwarzschild black hole in presence external asymptotically uniform magnetic field. We analyzed spacetime structure RGI by investigating Ricci, square Ricci tensor Kretschmann curvature scalars shown that only case when parameter $\ensuremath{\gamma}=0$ becomes infinite at center hole, while for nonzero values $\ensuremath{\gamma}$ reflects...
We consider a black hole mimicker given by an exact solution of the stationary and axially-symmetric field equations in vacuum known as $\ensuremath{\delta}$-Kerr metric. study its optical properties based on ray-tracing code for photon motion characterize apparent shape shadow compact object compare it with Kerr hole. For purpose obtaining qualitative estimates related to observed supermassive galaxy M87 we focus values object's spin $a$ inclination angle observation...
Abstract Gravitational waves (GWs) can be produced if a stellar compact object, such as black hole (BH) or neutron star, inspirals into an intermediate-massive of <?CDATA $({10}^{3}\sim {10}^{5}){M}_{\odot }$?> . Such system may in the center globular cluster nuclear star and is known intermediate- extreme-mass-ratio inspiral (IMRI EMRI). Motivated by recent suggestions that dark matter minispikes could form around IMBHs, we study effect dynamical friction against DM on merger rate...
This work is devoted to study the effects of Einstein-Æther gravity on dynamics magnetized particles orbiting a static, spherically symmetric and uncharged black hole immersed in an external asymptotically uniform magnetic field both comoving proper observers frames. The analysis carried out by varying free parameters c13 c14 theory noticing their impacts particle trajectories, radii innermost stable circular orbits (ISCOs), amount center-of-mass energy produced as result collision. strength...
The space-borne gravitational wave (GW) detectors, LISA and TAIJI, are planned to be launched in the 2030s. dual detectors with comparable sensitivities will form a network observing GW significant advantages. In this work, we investigate three possible LISA-TAIJI networks for different location orientation compositions of orbit ($+60^\circ$ inclination trailing Earth by $20^\circ$) alternative TAIJI configurations including TAIJIp leading $20^\circ$), TAIJIc co-located LISA), TAIJIm...
A waveform model for the eccentric binary black holes named SEOBNRE has been used to analyze LIGO-Virgo's gravitational wave data by several groups. The accuracy of this validated comparing it with numerical relativity. However, is a time-domain model, and efficiency generating waveforms bottleneck in analysis. To overcome disadvantage, we offer reduced-order surrogate based on waveforms. This (SEOBNRE_S) can simulate complete inspiral-merger-ringdown waves enough accuracy, covering...
We introduce a generic algorithm to determine the time delays and spacecraft (S/C) positions compose any time-delay interferometry (TDI) channel in dynamical case evaluate its sensitivity by using full numerical method. select 11 second-generation TDI channels constructed from four approaches investigate their gravitational wave responses, noise levels, averaged sensitivities under LISA orbit. The of selected are various especially for frequencies lower than 20 mHz. optimal A$_2$ (or...
In previous work [1], three TAIJI orbital deployments have been proposed to compose alternative LISA-TAIJI networks, TAIJIm (leading the Earth by $20^\circ$ and $-60^\circ$ inclined with respect ecliptic plane), TAIJIp $+60^\circ$ inclined), TAIJIc (colocated coplanar LISA) LISA mission (trailing inclined). And LISA-TAIJIm network has identified as most capable configuration for massive black hole binary observation. this work, we examine performance of networks stochastic gravitational wave...
Abstract KAGRA, the kilometer-scale underground gravitational-wave detector, is located at Kamioka, Japan. In April 2020, an astrophysics observation was performed KAGRA detector in combination with GEO 600 detector; this operation called O3GK. The optical configuration O3GK based on a power-recycled Fabry–Pérot–Michelson interferometer; all mirrors were set room temperature. duty factor of approximately 53%, and displacement sensitivity 1 × 10−18 ${\rm m}/\sqrt{\rm {Hz}}$ 250 Hz....
The Laser Interferometer Space Antenna (LISA) will be a transformative experiment for gravitational wave astronomy, and, as such, it offer unique opportunities to address many key astrophysical questions in completely novel way. synergy with ground-based and space-born instruments the electromagnetic domain, by enabling multi-messenger observations, add further discovery potential of LISA. next decade is crucial prepare community LISA's first observations. This review outlines extensive...