Characterizing Spinning Black Hole Binaries in Eccentric Orbits with LISA

Abstract

The Laser Interferometer Space Antenna (LISA) is designed to detect gravitational wave signals from astrophysical sources, including those from coalescing binary systems of compact objects such as black holes. Colliding galaxies have central black holes that sink to the center of the merged galaxy and begin to orbit one another and emit gravitational waves. Some galaxy evolution models predict that the binary black hole system will enter the LISA band with significant orbital eccentricity, while other models suggest that the orbits will already have circularized. Using a full seventeen parameter waveform model that includes the effects of orbital eccentricity, spin precession and higher harmonics, we investigate how well the source parameters can be inferred from simulated LISA data. Defining the reference eccentricity as the value one year before merger, we find that for typical LISA sources, it will be possible to measure the eccentricity to an accuracy of parts in a thousand. The accuracy with which the eccentricity can be measured depends only very weakly on the eccentricity, making it possible to distinguish circular orbits from those with very small eccentricities. LISA measurements of the orbital eccentricity can help constraints theories of galaxy mergers in the early universe. Failing to account for the eccentricity in the waveform modeling can lead to a loss of signal power and bias the estimation of parameters such as the black hole masses and spins.

11 pages, 13 figures, references, text and figures updated

References in corpus (17)

• Intermediate and Extreme Mass-Ratio Inspirals -- Astrophysics, Science Applications and Detection using LISA
• Gravitational waves from scattering of stellar-mass black holes in galactic nuclei
• Alignment of the spins of supermassive black holes prior to coalescence
• Higher-order spin effects in the dynamics of compact binaries I. Equations of motion
• LISA detections of massive black hole inspirals: parameter extraction errors due to inaccurate template waveforms
• The imprint of massive black hole formation models on the LISA data stream
• Reconstructing the massive black hole cosmic history through gravitational waves
• Self consistent model for the evolution of eccentric massive black hole binaries in stellar environments: implications for gravitational wave observations
• Tests of Bayesian Model Selection Techniques for Gravitational Wave Astronomy
• Parameter estimation of spinning binary inspirals using Markov-chain Monte Carlo
• A Solution to the Galactic Foreground Problem for LISA
• A Bayesian Approach to the Detection Problem in Gravitational Wave Astronomy
• Intermediate-mass black holes in colliding clusters: Implications for lower-frequency gravitational-wave astronomy
• MCMC Exploration of Supermassive Black Hole Binary Inspirals
• Supermassive Black Hole Growth and Merger Rates from Cosmological N-body Simulations
• Separating Gravitational Wave Signals from Instrument Artifacts
• Gravitational waveforms for spinning compact binaries