scholarly journals Waveforms of compact binary inspiral gravitational radiation in screened modified gravity

2018 ◽  
Vol 98 (8) ◽  
Author(s):  
Tan Liu ◽  
Xing Zhang ◽  
Wen Zhao ◽  
Kai Lin ◽  
Chao Zhang ◽  
...  
Keyword(s):  
Gravitational Radiation ◽  
Modified Gravity ◽  
Compact Binary

scholarly journals Angular momentum loss for eccentric compact binary in screened modified gravity

2019 ◽  
Vol 2019 (01) ◽  
pp. 019-019 ◽  
Author(s):  
Xing Zhang ◽  
Wen Zhao ◽  
Tan Liu ◽  
Kai Lin ◽  
Chao Zhang ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Modified Gravity ◽  
Momentum Loss ◽  
Compact Binary ◽  
Angular Momentum Loss

scholarly journals Estimating the Chirp Mass of Eccentric Inspiraling Binary Systems from Time-Frequency Representations of their Gravitational Radiation

2021 ◽  
Vol 2081 (1) ◽  
pp. 012008
Author(s):  
Innocenzo M Pinto
Keyword(s):  
Binary System ◽  
Gravitational Wave ◽  
Gravitational Radiation ◽  
Binary Systems ◽  
Estimation Algorithm ◽  
Orbital Eccentricity ◽  
Reference Time ◽  
Time Frequency ◽  
Compact Binary ◽  
Non Gaussian

Abstract Using the simplest yet meaningful Peters-Mathews model describing the orbital damping of a compact binary system under the emission of gravitatonal radiation, we show that the chirp-mass of an eccentric inspiraling binary, and its (Keplerian) orbital eccentricity at some reference time, can be estimated from the time-frequency skeleton of its gravitational wave signal. The estimation algorithm is nicely simple, and is robust against the non-ideal (non Gaussian, non stationary) features of detector noise.

scholarly journals Improved early warning of compact binary mergers using higher modes of gravitational radiation: a population study

2021 ◽  
Vol 502 (2) ◽  
pp. 1612-1622
Author(s):  
Mukesh Kumar Singh ◽  
Shasvath J Kapadia ◽  
Md Arif Shaikh ◽  
Deep Chatterjee ◽  
Parameswaran Ajith
Keyword(s):  
Early Warning ◽  
Gaussian Noise ◽  
Gravitational Radiation ◽  
Large Scale ◽  
Dominant Mode ◽  
Target Localization ◽  
Higher Modes ◽  
Compact Binary ◽  
3G Network ◽  
Binary Mergers

ABSTRACT A gravitational wave early warning of a compact binary coalescence event, with a sufficiently tight localization skymap, would allow telescopes to point in the direction of the potential electromagnetic counterpart before its onset. Use of higher modes of gravitational radiation, in addition to the dominant mode typically used in templated real-time searches, was recently shown to produce significant improvements in early-warning times and skyarea localizations for a range of asymmetric mass binaries. We perform a large-scale study to assess the benefits of this method for a population of compact binary merger observations. In particular, we inject 100 000 such signals in Gaussian noise, with component masses $m_1 \in \left[1, 60 \right] \, \mathrm{M}_{\odot }$ and $m_2 \in \left[1, 3 \right] \, \mathrm{M}_{\odot }$. We consider three scenarios involving ground-based detectors: the fifth (O5) observing run of the Advanced LIGO-Virgo-KAGRA network, its projected Voyager upgrade, as well as a proposed third-generation (3G) network. We find that for fixed early-warning times of 20–60 s, the inclusion of the higher modes can provide localization improvements of a factor of ≳2 for up to ${\sim}60{{\ \rm per\ cent}}$ ($70 {{\ \rm per\ cent}}$) of the neutron star–black hole (NSBH) systems in the O5 (Voyager) scenario. Considering only those NSBH systems that can produce potential electromagnetic counterparts, such improvements in the localization can be expected for ${\sim}5\!-\!35{{\ \rm per\ cent}}$  $(20\!-\!50{{\ \rm per\ cent}})$ binaries in O5 (Voyager). For the 3G scenario, a significant fraction of the events have time gains of a minute to several minutes, assuming fiducial target localization areas of 100–1000 deg2.

scholarly journals Gravitational-Radiation Damping of Compact Binary Systems to Second Post-Newtonian Order

1995 ◽  
Vol 74 (18) ◽  
pp. 3515-3518 ◽  
Author(s):  
Luc Blanchet ◽  
Thibault Damour ◽  
Bala R. Iyer ◽  
Clifford M. Will ◽  
Alan G. Wiseman
Keyword(s):  
Gravitational Radiation ◽  
Binary Systems ◽  
Radiation Damping ◽  
Compact Binary ◽  
Compact Binary Systems
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