Abstract Details

Name: Nirban Bose
Affiliation: PhD student, IIT Bombay
Conference ID: ASI2021_537
Title : A model-independent phenomenological constraints on the eccentricity for binary black hole systems
Authors and Co-Authors : Nirban Bose (IIT Bombay), Archana Pai (IIT Bombay)
Abstract Type : Oral
Abstract Category : General Relativity and Cosmology
Abstract : Compact binary systems with black holes are primary sources of interferometric gravitational wave detectors like LIGO,Virgo and Kagra. Though it was believed that isolated binaries may circularize before entering the interferometric band, recent detections suggest that binary systems with appreciable non-zero eccentricity are possible in the dense stellar environment like globular clusters and galactic nuclei. With increasing sensitivity of the interferometric gravitational wave detectors, the eccentric binaries are plausible and important candidates for the gravitational wave window. In this work we develop a phenomenological approach to constrain the eccentricity of eccentric binaries in the advanced detector era. We obtain a phenomenological relation between the chirp mass and eccentricity in the stellar mass and eccentricity space. Further, we also estimate the bias in recovering the chirp mass using circular waveforms for eccentric binary signals in simulated data. This bias, along with the chirp mass estimated from the time-frequency map is used to constrain the eccentricity using the phenomenological fits. This heuristic approach has direct application in the model independent eccentricity estimation for the generic stellar mass eccentric systems in the upcoming observational runs.