Merger of black hole and neutron star in general relativity: Tidal disruption, torus mass, and gravitational waves

The masses of compact object (black hole, neutron star) binaries depend strongly on the parameters describing stellar evolution. Such masses or their functions can be measured using gravitational waves or through microlensing searches. We analyze an example of the varying common envelope efficiency and show the dependence of distributions of the measured chirp masses in gravitational waves mass ratios through microlensing taking into account the relevant selection effects.

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The Direct Detection of Gravitational Waves

Enjoy Our Universe ◽

10.1093/oso/9780198817802.003.0019 ◽

2018 ◽

pp. 106-109

Author(s):

Alvaro De Rújula

Keyword(s):

Black Holes ◽

General Relativity ◽

Black Hole ◽

Gravitational Waves ◽

Direct Detection ◽

Space Time ◽

New Era ◽

The Third ◽

Perfect Storm

Gravitational waves emitted by black hole mergers. The first LIGO event: GW150917, the coalescence of two black holes of twenty nine and thirty six solar masses into one of “only” sixty two. The remaining three solar masses were emitted as energy in gravitational waves, a gigantic and perfect storm in the fabric of space-time. This is the dawn of a new era: The opening of the third “window” through which to look at the sky. Yet another triumph of general relativity. How much progress astrophysics has made since my time as a student.

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The development of ground based gravitational wave astronomy and opportunities for Australia–China collaboration

International Journal of Modern Physics A ◽

10.1142/s0217751x15450190 ◽

2015 ◽

Vol 30 (28n29) ◽

pp. 1545019

Author(s):

David Blair ◽

Li Ju ◽

Chunnong Zhao ◽

Linqing Wen ◽

Qi Chu ◽

...

Keyword(s):

Black Hole ◽

Neutron Star ◽

Gravitational Wave ◽

Gravitational Waves ◽

Southern Hemisphere ◽

Event Rate ◽

Wave Spectrum ◽

Current Status ◽

Dramatic Improvement ◽

The Universe

This paper begins by reviewing the development of gravitational wave astronomy from the first predictions of gravitational waves to development of technologies across the entire gravitational wave spectrum, and then focuses on the current status of ground based gravitational wave detectors. With substantial improvements already demonstrated in early commissioning it is emphasised that Advanced detectors are on track for first detection of gravitational waves. The importance of a worldwide array of detectors is emphasised, and recent results are shown that demonstrate the continued advantage of a southern hemisphere detector. Finally it is shown that a north–south pair of 8 km arm length detectors would give rise to a dramatic improvement in event rate, enabling a pair of detectors to encompass a 64-times larger volume of the universe, to conduct a census on all stellar mass black hole mergers to [Formula: see text] and to observe neutron star mergers to a distance of [Formula: see text][Formula: see text]800 Mpc.

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Erratum: Gravitational waves from nonspinning black hole-neutron star binaries: Dependence on equations of state [Phys. Rev. DPRVDAQ1550-799882, 044049 (2010)10.1103/PhysRevD.82.044049]

Physical Review D ◽

10.1103/physrevd.84.049902 ◽

2011 ◽

Vol 84 (4) ◽

Cited By ~ 17

Author(s):

Koutarou Kyutoku ◽

Masaru Shibata ◽

Keisuke Taniguchi

Keyword(s):

Black Hole ◽

Neutron Star ◽

Gravitational Waves ◽

Equations Of State

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Low latency search for gravitational waves from black-hole–neutron-star binaries in coincidence with short gamma-ray bursts

Physical Review D ◽

10.1103/physrevd.89.064056 ◽

2014 ◽

Vol 89 (6) ◽

Cited By ~ 5

Author(s):

Andrea Maselli ◽

Valeria Ferrari

Keyword(s):

Black Hole ◽

Neutron Star ◽

Gravitational Waves ◽

Gamma Ray ◽

Gamma Ray Bursts ◽

Low Latency

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Recent searches for continuous gravitational waves

Modern Physics Letters A ◽

10.1142/s021773231730035x ◽

2017 ◽

Vol 32 (39) ◽

pp. 1730035 ◽

Cited By ~ 43

Author(s):

Keith Riles

Keyword(s):

Black Holes ◽

Black Hole ◽

Neutron Star ◽

Gravitational Waves ◽

Gamma Ray ◽

Continuous Wave ◽

New Era ◽

Binary Neutron Star ◽

Binary Black Hole ◽

Bose Einstein

Gravitational wave astronomy opened dramatically in September 2015 with the LIGO discovery of a distant and massive binary black hole coalescence. The more recent discovery of a binary neutron star merger, followed by a gamma ray burst (GRB) and a kilonova, reinforces the excitement of this new era, in which we may soon see other sources of gravitational waves, including continuous, nearly monochromatic signals. Potential continuous wave (CW) sources include rapidly spinning galactic neutron stars and more exotic possibilities, such as emission from axion Bose Einstein “clouds” surrounding black holes. Recent searches in Advanced LIGO data are presented, and prospects for more sensitive future searches are discussed.

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