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 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 TRACE OF PHASE-SPACE NONCOMMUTATIVITY IN RESPONSE OF A FREE PARTICLE TO LINEARIZED GRAVITATIONAL WAVES

2013 ◽  
Vol 28 (35) ◽  
pp. 1350161 ◽  
Author(s):  
SUNANDAN GANGOPADHYAY ◽  
ANIRBAN SAHA ◽  
SWARUP SAHA
Keyword(s):  
Phase Space ◽  
Gravitational Waves ◽  
Cross Correlation ◽  
Free Particle ◽  
Momentum Scale ◽  
Specific Frequency ◽  
Global Nature ◽  
Space Noncommutativity ◽  
Correlation Procedure ◽  
Noncommutative Parameter

Interaction of linearized gravitational waves with a otherwise free particle has been studied quantum mechanically in a noncommutative (NC) phase-space to examine whether the particle's response to the gravitational wave gets modified due to spatial and/or momentum noncommutativity. The result shows that momentum noncommutativity introduces a oscillatory noise with a specific frequency determined by the fundamental momentum scale and particle mass. Because of the global nature of the phase-space noncommutativity such noise will have similar characteristics for all detector sites and thus will stand out in a data cross-correlation procedure. If detected, this noise will provide evidence of momentum noncommutativity and also an estimation of the relevant noncommutative parameter.

scholarly journals EUVE J0825-16.3 and EUVE J1501-43.6: Two dMe Double–Lined Spectroscopic Binaries

2006 ◽  
Vol 2 (S240) ◽  
pp. 690-696
Author(s):  
D. Montes ◽  
I. Crespo-Chacón ◽  
M.C. Gálvez ◽  
M.J. Fernández-Figueroa
Keyword(s):  
High Resolution ◽  
Orbital Period ◽  
Binary Systems ◽  
Cross Correlation ◽  
Rotational Velocity ◽  
Spectroscopic Binaries ◽  
Balmer Lines ◽  
First Time ◽  
Orbital Solution ◽  
Similar Intensity

AbstractHigh-resolution echelle spectroscopic observations taken with the FEROS spectrograph at the ESO 2.2-m telescope confirm the binary nature of the dMe stars EUVE J0825−16.3 and EUVE J1501−43.6, previously reported by Christian & Mathioudakis (2002). In these binary systems, emission of similar intensity from both components is detected in the Na i D1 & D2, He i D3, Ca II H&K, Ca II IRT and Balmer lines. We have determined precise radial velocities by cross-correlation with radial velocity standard stars, which have allowed us to obtain for the first time the orbital solution of these systems. Both binaries consist of two nearly equal M0V components with an orbital period shorter than 3.5 days. We have analyzed the behaviour of the chromospheric activity indicators (variability and possible flares). In addition, we have determined its rotational velocity and kinematics.

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 Cross-correlation search for continuous gravitational waves from a compact object in SNR 1987A in LIGO Science run 5

2016 ◽  
Vol 94 (8) ◽  
Author(s):  
L. Sun ◽  
A. Melatos ◽  
P. D. Lasky ◽  
C. T. Y. Chung ◽  
N. S. Darman
Keyword(s):  
Gravitational Waves ◽  
Cross Correlation ◽  
Compact Object ◽  
Correlation Search

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
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