彭桓武理论物理创新研究中心“2025引力波物理研讨会”

Session

18 Oct 2025, 16:10

Multi-Functional Hall (opposite the Main Lecture Hall), 3rd Floor, Building 7 （7号楼3层多功能厅，主会场对面）

Conveners

Parallel-2

• Ming-Hui Du ()

Contribution list Timetable

6. Laser Interferometry Experimental System for Lunar-Based Gravitational Wave Detection Applications

Lian-Fu Wei (SWJTU)

18/10/2025, 16:10

基于月面极高真空、低温、弱月震和低重力等自然洁净环境，本文设计了面向0.1-10Hz低频段和KHz高频段引力波探测应用的、引力波调制微弱激光传输相移的激光干涉测量系统；针对其主要的激光光束散粒噪声、测试质量辐射压噪声和月面振动噪声等，基于数值模拟给出了所设计系统的目标频段引力波探测可达灵敏度评估；并讨论了基于超导悬浮技术实现测试质量辐射压噪声进一步压制的可行性。

23. A noise transfer functions calculation method under dynamic orbital conditions for time-delay interferometry combinations

Xinlei Zhao

18/10/2025, 16:30

Space-borne gravitational wave detectors suppress overwhelming laser phase noise by recombining time-delayed heterodyne beatnote phases via time-delay interferometry (TDI). Simultaneously, TDI reshapes secondary noises in the phase, quantified through frequency-domain transfer functions. The dynamic orbits of the detectors modulate secondary noise by affecting arm length variations, which...

22. Tilt-to-length coupling coefficients estimation and noise subtraction using a marginalization likelihood function

Hao-Kang Chen

18/10/2025, 16:50

Space-based gravitational wave(GW) detectors aim to measure GWs in the millihertz frequency band. Various noise sources can limit the GW detection sensitivity during the detection process. Tilt-to-length(TTL) noise, arising from the angular and lateral jitter of spacecraft(SC) and movable optical subassembly(MOSA), is one of the primary noise sources remaining after using the time-delay...

9. Modeling and prediction of the foreground noise in space-based gravitational wave detections

Dr Pin Gao (University of Chinese Academy of Sciences)

18/10/2025, 17:10

The Galactic foreground noise presents a major challenge for space-based gravitational wave detection. Gravitational waves from the vast population of double white dwarfs overlap and interfere, producing an indistinguishable foreground component. This contamination complicates the search for other gravitational wave sources and reduces their signal-to-noise ratios. Since the foreground is...

7. Variational inference for correlated gravitational wave detector network noise

Mr Jianan Liu (University of Auckland)

18/10/2025, 17:30

Gravitational wave detectors like the Einstein Telescope and LISA generate long multivariate time series, which pose significant challenges in spectral density estimation due to the large number of observations as well as the presence of correlated noise. Addressing both issues is crucial for accurately interpreting the signals detected by these instruments. A variational inference method for...

24. Time Delay Interferometry

Panpan Wang

The space-based gravitational wave detector will open a new window in the frequency range of 0.1 mHz to 1 Hz, which cannot be covered by ground-based gravitational wave detectors. This is of great significance for studying the formation and evolution of the universe. However, detecting gravitational wave signals in space is a significant challenge. One of the main obstacles is the high level...