scholarly journals Extracting the orbital axis from gravitational waves of precessing binary systems

2018 ◽  
Vol 97 (2) ◽  
Author(s):  
Kyohei Kawaguchi ◽  
Koutarou Kyutoku ◽  
Hiroyuki Nakano ◽  
Masaru Shibata
Keyword(s):  
Gravitational Waves ◽  
Binary Systems ◽  
Orbital Axis

scholarly journals Standard sirens and dark sector with Gaussian process

2018 ◽  
Vol 168 ◽  
pp. 01008 ◽  
Author(s):  
Rong-Gen Cai ◽  
Tao Yang
Keyword(s):  
Monte Carlo ◽  
Gaussian Process ◽  
Gravitational Waves ◽  
Binary Systems ◽  
Cosmological Parameters ◽  
Dark Sector ◽  
Compact Binary ◽  
Compact Binary Systems ◽  
Process Methodology ◽  
The Universe

The gravitational waves from compact binary systems are viewed as a standard siren to probe the evolution of the universe. This paper summarizes the potential and ability to use the gravitational waves to constrain the cosmological parameters and the dark sector interaction in the Gaussian process methodology. After briefly introducing the method to reconstruct the dark sector interaction by the Gaussian process, the concept of standard sirens and the analysis of reconstructing the dark sector interaction with LISA are outlined. Furthermore, we estimate the constraint ability of the gravitational waves on cosmological parameters with ET. The numerical methods we use are Gaussian process and the Markov-Chain Monte-Carlo. Finally, we also forecast the improvements of the abilities to constrain the cosmological parameters with ET and LISA combined with the Planck.

scholarly journals Polarization of Gravitational Waves from Binary Systems

2019 ◽  
Author(s):  
Lutendo Nyadzani ◽  
S. Razzaque
Keyword(s):  
Gravitational Waves ◽  
Binary Systems

scholarly journals Resampling to accelerate cross-correlation searches for continuous gravitational waves from binary systems

2018 ◽  
Vol 97 (4) ◽  
Author(s):  
Grant David Meadors ◽  
Badri Krishnan ◽  
Maria Alessandra Papa ◽  
John T. Whelan ◽  
Yuanhao Zhang
Keyword(s):  
Gravitational Waves ◽  
Binary Systems ◽  
Cross Correlation

scholarly journals Binary systems as resonance detectors for gravitational waves

2013 ◽  
Vol 87 (8) ◽  
Author(s):  
Lam Hui ◽  
Sean T. McWilliams ◽  
I-Sheng Yang
Keyword(s):  
Gravitational Waves ◽  
Binary Systems

scholarly journals Gravitational waves from binary systems in circular orbits: convergence of a partially bare multipole expansion

1998 ◽  
Vol 15 (8) ◽  
pp. 2075-2081 ◽  
Author(s):  
Stephen W Leonard ◽  
Eric Poisson
Keyword(s):  
Gravitational Waves ◽  
Binary Systems ◽  
Multipole Expansion ◽  
Circular Orbits

scholarly journals Novel directed search strategy to detect continuous gravitational waves from neutron stars in low- and high-eccentricity binary systems

2017 ◽  
Vol 95 (12) ◽  
Author(s):  
Paola Leaci ◽  
Pia Astone ◽  
Sabrina D’Antonio ◽  
Sergio Frasca ◽  
Cristiano Palomba ◽  
...  
Keyword(s):  
Neutron Stars ◽  
Gravitational Waves ◽  
Binary Systems ◽  
Search Strategy ◽  
Directed Search ◽  
High Eccentricity

scholarly journals Obtaining gravitational waves from inspiral binary systems using LIGO data

2017 ◽  
Vol 132 (1) ◽  
Author(s):  
Javier M. Antelis ◽  
Claudia Moreno
Keyword(s):  
Gravitational Waves ◽  
Binary Systems

Pulsar timing and relativistic gravity

1992 ◽  
Vol 341 (1660) ◽  
pp. 117-134 ◽  
Keyword(s):  
Gravitational Waves ◽  
Binary Systems ◽  
Strong Field ◽  
Low Frequency ◽  
Rate Of Change ◽  
Pulsar Timing ◽  
Basic Physics ◽  
Time Standards ◽  
The Universe

In addition to being fascinating objects to study in their own right, pulsars are exquisite tools for probing a variety of issues in basic physics. Recycled pulsars, thought to have been spun up in previous episodes of mass accretion from orbiting companion stars, are especially well suited for such applications. They are extraordinarily stable clocks, approaching and perhaps exceeding the long-term stabilities of the best terrestrial time standards. Most of them are found in binary systems, with orbital velocities as large as 10 -3 c. They provide unique opportunities for measuring neutron star masses, thereby yielding fundamental astrophysical data difficult to acquire by any other means. And they open the way for high precision tests of the nature of gravity under conditions much more ‘relativistic ’ than found anywhere within the Solar System. Among other results, pulsar timing observations have convincingly established the existence of quadrupolar gravitational waves propagating at the speed of light. They have also placed interesting limits on possible departures of the strong-field nature of gravity from general relativity, on the rate of change of Newton’s constant, G , and on the energy density of low-frequency gravitational waves in the universe.

scholarly journals THE R-MODE INSTABILITY IN ROTATING NEUTRON STARS

2001 ◽  
Vol 10 (04) ◽  
pp. 381-441 ◽  
Author(s):  
NILS ANDERSSON ◽  
KOSTAS D. KOKKOTAS
Keyword(s):  
Neutron Stars ◽  
Gravitational Wave ◽  
Gravitational Waves ◽  
Binary Systems ◽  
Current Understanding ◽  
Mode Instability ◽  
Spin Evolution ◽  
Astrophysical Significance

In this review we summarize the current understanding of the gravitational-wave driven instability associated with the so-called r-modes in rotating neutron stars. We discuss the nature of the r-modes, the detailed mechanics of the instability and its potential astrophysical significance. In particular we discuss results regarding the spin-evolution of nascent neutron stars, the detectability of r-mode gravitational waves and mechanisms limiting the spin-rate of accreting neutron stars in binary systems.

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