A5088491041- Pulsars and Gravitational Waves Research
- Gamma-ray bursts and supernovae
- Astrophysical Phenomena and Observations
- Cosmology and Gravitation Theories
- Geophysics and Gravity Measurements
- Radio Astronomy Observations and Technology
- Geophysics and Sensor Technology
- Astronomical Observations and Instrumentation
- Astrophysics and Cosmic Phenomena
- Adaptive optics and wavefront sensing
- Black Holes and Theoretical Physics
- Advanced Frequency and Time Standards
- Stellar, planetary, and galactic studies
- Statistical and numerical algorithms
- Seismic Waves and Analysis
- Atomic and Subatomic Physics Research
- Advanced Electrical Measurement Techniques
- Neutrino Physics Research
- Space Technology and Applications
- High-pressure geophysics and materials
- Galaxies: Formation, Evolution, Phenomena
- Cold Atom Physics and Bose-Einstein Condensates
- Dark Matter and Cosmic Phenomena
- Computational Physics and Python Applications
- Seismology and Earthquake Studies
Sun Yat-sen University
2019-2025
National Tsing Hua University
2016-2018
TianQin is a planned space-based gravitational wave (GW) observatory consisting of three earth orbiting satellites with an orbital radius about $10^5~{\rm km}$. The will form equilateral triangle constellation the plane which nearly perpendicular to ecliptic plane. aims detect GWs between $10^{-4}~{\rm Hz}$ and $1~{\rm that can be generated by wide variety important astrophysical cosmological sources, including inspiral Galactic ultra-compact binaries, stellar-mass black hole extreme mass...
We explore the prospects of detecting Galactic double white dwarf (DWD) binaries with space-based gravitational wave (GW) observatory TianQin. In this work, we analyze both a sample currently known DWDs and realistic synthetic population to assess number guaranteed detections full capacity mission. find that TianQin can detect 12 out $\sim100$ DWDs; GW signals these be modeled in detail ahead mission launch, therefore they used as verification sources. Besides estimate has potential many...
We investigate the prospects of detecting gravitational waves from coalescing massive black hole binaries in Universe with TianQin observatory, a space-based wave interferometer proposed to be launched 2030s. To frame scientific scope mission, this paper, we carry out preliminary estimation signal-to-noise ratio, detection rate and parameter precision detectable by TianQin. In order make our results as robust possible, consider several models growth history holes, exploring effect some key...
Abstract Galactic short-period close white dwarf binaries (CWDBs) are important objects for space-borne gravitational-wave (GW) detectors in the millihertz frequency bands. Due to intrinsically low luminosity, only about 25 identified CWDBs detectable by Laser Interferometer Space Antenna (LISA), which also known as verification (VBs). The Gaia Early Data Release 3 (EDR3) provids a catalog containing large number of CWDB candidates, includes parallax and photometry measurements. We...
Gravitational lensing of gravitational waves (GWs) is a powerful probe the matter distribution in universe. Here we revisit wave-optics effects induced by dark (DM) halos on GW signals merging massive black hole binaries (MBHBs), and study possibility discerning these using Laser Interferometer Space Antenna (LISA). In particular, include low-mass range $\rm 10^5-10^8\, M_\odot$ since they are most numerous according to cold DM model. We simulate lensed corresponding wide impact parameters,...
When gravitational waves (GWs) pass by a massive object on its way to Earth, strong lensing effect will happen. Thus, the GW signal be amplified, deflected, and delayed in time. Through analyzing lensed waveform, physical properties of lens can inferred. On other hand, neglecting effects analysis data may induce systematic errors estimating source parameters. As space-borne detector, TianQin launched 2030s. It is expected detect dozens mergers black hole binaries (MBHBs) as far $z=15$ thus...
The detection of gravitational waves (GWs) has opened a new window to test the theory gravity in strong field regime. In general relativity (GR), GW can only possess two tensor polarization modes, which are known as $+$ and $\ifmmode\times\else\texttimes\fi{}$ modes. However, vector scalar modes exist some modified theories gravity, we by probing these extra As space-borne detector, TianQin will be launched 2030s, it is expected observe plenty signals, including those from nearly ten...
Abstract The measurement of the Hubble constant H 0 plays an important role in study cosmology. In this work, we propose a new method to constrain using strongly lensed gravitational wave (SLGW) signals. Through reparameterization, find that waveform is sensitive . Assuming scenario no electromagnetic counterpart GW source can be identified, our still give meaningful constraints on with information lens redshift. We then apply Fisher matrix and Markov Chain Monte Carlo evaluate potential...
The opening of the gravitational wave window has significantly enhanced our capacity to explore universe's most extreme and dynamic sector. In mHz frequency range, a diverse range compact objects, from massive black holes at farthest reaches Universe lightest white dwarfs in cosmic backyard, generate complex symphony signals. Once recorded by detectors, these unique fingerprints have potential decipher birth growth structures over wide scales, stellar binaries clusters galaxies large-scale...
When gravitational waves pass by a massive object on its way to the Earth, strong lensing effect will happen. Thus GW signal be amplified, deflected, and delayed in time. Through analysing lensed waveform, physical properties of lens can inferred. On other hand, neglecting effects analysis data may induce systematic errors estimating source parameters. As space-borne detector, TianQin launched 2030s. It is expected detect dozens MBHBs merger as far z = 15, thus have high probability at least...
TianQin and LISA are space-based laser interferometer gravitational wave (GW) detectors planned to be launched in the mid-2030s. Both will detect low-frequency GWs around $10^{-2}\,{\rm Hz}$, however, is more sensitive frequencies above this common sweet-spot while below Hz}$. Therefore, able same sources but with different accuracy depending on source its parameters. We consider some of most important astrophysical -- massive black hole binaries, stellar-mass double white dwarfs, extreme...
The cosmic distance duality relation (CDDR), expressed as DL(z) = (1 + z)2DA(z), plays an important role in modern cosmology. In this paper, we propose a new method of testing CDDR using strongly lensed gravitational wave (SLGW) signals. Under the geometric optics approximation, calculate lens effects two models, point mass and singular isothermal sphere. We use functions {\eta}1(z) 1 {\eta}0z {\eta}2(z) {\eta}0z=(1 z) to parameterize deviation CDDR. By reparameterizing SLGW waveform with...
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The measurement of the Hubble constant $H_0$ plays an important role in study cosmology. In this letter, we propose a new method to constrain using strongly lensed gravitational wave (GW) signals. By reparameterizing waveform, find that waveform is sensitive $H_0$. Assuming scenario no electromagnetic counterpart GW source can be identified, our still give meaningful constraints on with information lens redshift. We then apply Fisher matrix and Markov Chain Monte Carlo evaluate potential...
The detection of gravitational wave (GW) has opened a new window to test the theory gravity in strong field regime. In general relativity (GR), GW can only possess two tensor polarization modes, which are known as $+$ and $\times$ modes. However, vector scalar modes exist some modified theories gravity, we by probing these extra As space-borne detector, TianQin will be launched 2030s, it is expected observe plenty signals, including those from nearly ten-thousands double white dwarfs (DWDs)...