Gravitational wave astronomy: chance and challenge to fundamental physics and astrophysics

Cao, Zhoujian

doi:10.1007/s11433-016-0324-y

Cited by 8 publications

(6 citation statements)

References 15 publications

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“…In contrast, the matched filtering data analysis technology digs out the signal from the strong noise with SNR 13 and confidence level 5σ. GW151226 is a good example showing that the detection of GW is the result of combination of experiment * Electronic address: zjcao@amt.ac.cn achievement and theoretical research progress [4].…”

Section: Introductionmentioning

confidence: 99%

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Waveform model for an eccentric binary black hole based on the effective-one-body-numerical-relativity formalism

Cao¹,

Han²

2017

Phys. Rev. D

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150

134

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Binary black hole systems are among the most important sources for gravitational wave detection. And also they are good objects for theoretical research for general relativity. Gravitational waveform template is important to data analysis. Effective-one-body-numerical-relativity (EOBNR) model has played an essential role in the LIGO data analysis. For future space-based gravitational wave detection, many binary systems will admit somewhat orbit eccentricity. At the same time the eccentric binary is also an interesting topic for theoretical study in general relativity. In this paper we construct the first eccentric binary waveform model based on effective-one-body-numerical-relativity framework. Our basic assumption in the model construction is that the involved eccentricity is small. We have compared our eccentric EOBNR model to the circular one used in LIGO data analysis. We have also tested our eccentric EOBNR model against to another recently proposed eccentric binary waveform model; against to numerical relativity simulation results; and against to perturbation approximation results for extreme mass ratio binary systems. Compared to numerical relativity simulations with eccentricity as large as about 0.2, the overlap factor for our eccentric EOBNR model is better than 0.98 for all tested cases including spinless binary and spinning binary; equal mass binary and unequal mass binary. Hopefully our eccentric model can be the start point to develop a faithful template for future space-based gravitational wave detectors.

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Section: Introductionmentioning

confidence: 99%

“…In order to make the matched filtering technique work, the gravitational waveform template is essential [4]. And the template strongly depends on the specific theoretical model of GW source.…”

Section: Introductionmentioning

confidence: 99%

Waveform model for an eccentric binary black hole based on the effective-one-body-numerical-relativity formalism

Cao¹,

Han²

2017

Phys. Rev. D

Self Cite

150

134

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“…随着引力波探测数据的增多 [22][23][24][25][26][27][28] , 人们有可能会像对待别的物理问题一样, 由实验结果指引人们思考问题的方向. 可以想象, 如果那样引力物理的研究方式将被极大地改变 [29] . 人们对引力波实验的第一反应是, 幅度10 -…”

Section: 但无论如何近年来的大量独立天文观测表明当今宇unclassified

Using gravitational wave to test general relativity

Cao

2018

Sci. Sin.-Phys. Mech. Astron.

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“…Then when the experiment data are ready, we can use matched filtering data analysis techniques to improve the GW detection sensitivity. And more, the theoretical model can be used to realize the astronomy detection of the GW sources through matched filtering [138,139]. Binary systems are among the most important and major sources for GW detection projects including PTA, space-based laser interferometer detectors such as eLISA, Taiji and Tianqin projects, ground-based laser interferometer detectors such as Advanced LIGO, Advanced Virgo, Kagra and others.…”

Section: Gravitational Wavesmentioning

confidence: 99%

The Gravitational-Wave Physics

Cai,

Cao,

Guo

et al. 2017

Preprint

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The direct detection of gravitational wave by Laser Interferometer Gravitational-Wave Observatory indicates the coming of the era of gravitational-wave astronomy and gravitational-wave cosmology. It is expected that more and more gravitational-wave events will be detected by currently existing and planned gravitational-wave detectors. The gravitational waves open a new window to explore the Universe and various mysteries will be disclosed through the gravitational-wave detection, combined with other cosmological probes. The gravitational-wave physics is not only related to gravitation theory, but also is closely tied to fundamental physics, cosmology and astrophysics. In this review article, three kinds of sources of gravitational waves and relevant physics will be discussed, namely gravitational waves produced during the inflation and preheating phases of the Universe, the gravitational waves produced during the first-order phase transition as the Universe cools down and the gravitational waves from the three phases: inspiral, merger and ringdown of a compact binary system, respectively. We will also discuss the gravitational waves as a standard siren to explore the evolution of the Universe.

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Gravitational wave astronomy: chance and challenge to fundamental physics and astrophysics

Cited by 8 publications

References 15 publications

Waveform model for an eccentric binary black hole based on the effective-one-body-numerical-relativity formalism

Waveform model for an eccentric binary black hole based on the effective-one-body-numerical-relativity formalism

Using gravitational wave to test general relativity

The Gravitational-Wave Physics

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