Detecting gravitational waves from precessing binaries of spinning compact objects. II. Search implementation for low-mass binaries

Details Detecting gravitational waves from precessing binaries of spinning compact objects. II. Search implementation for low-mass binaries Detecting gravitational waves from precessing binaries of spinning compact objects. II. Search implementation for low-mass binaries

2005-08-16

arxiv.org/abs/gr-qc/0508064v1

Phys.Rev. D72 (2005) 084027

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

18 pages, 15 figures

Scientific paper

Detection template families (DTFs) are built to capture the essential features of true gravitational waveforms using a small set of phenomenological waveform parameters. Buonanno, Chen, and Vallisneri [Phys. Rev. D 67, 104025 (2003)] proposed the ``BCV2'' DTF to perform computationally efficient searches for signals from precessing binaries of compact stellar objects. Here we test the signal-matching performance of the BCV2 DTF for asymmetric--mass-ratio binaries, and specifically for double--black-hole binaries with component masses (m1,m2): (6~12Msun, 1~3Msun), and for black-hole--neutron-star binaries with component masses (m1,m2) = (10Msun, 1.4Msun); we take all black holes to be maximally spinning. We find a satisfactory signal-matching performance, with fitting factors averaging between 0.94 and 0.98. We also scope out the region of BCV2 parameters needed for a template-based search, we evaluate the template match metric, we discuss a template-placement strategy, and we estimate the number of templates needed for searches at the LIGO design sensitivity. In addition, after gaining more insight in the dynamics of spin--orbit precession, we propose a modification of the BCV2 DTF that is parametrized by physical (rather than phenomenological) parameters. We test this modified ``BCV2P'' DTF for the (10Msun, 1.4Msun) black-hole--neutron-star system, finding a signal-matching performance comparable to the BCV2 DTF, and a reliable parameter-estimation capability for target-binary quantities such as the chirp mass and the opening angle (the angle between the black-hole spin and the orbital angular momentum).

Affiliated with

Also associated with

No associations

Rating

Detecting gravitational waves from precessing binaries of spinning compact objects. II. Search implementation for low-mass binaries does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Detecting gravitational waves from precessing binaries of spinning compact objects. II. Search implementation for low-mass binaries, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detecting gravitational waves from precessing binaries of spinning compact objects. II. Search implementation for low-mass binaries will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-131044