Abstract Details

Name: Mukesh Kumar Singh
Affiliation: International Centre for Theoretical Sciences, Tata Institute of Fundamental Research
Conference ID: ASI2021_94
Title : Improved inference of binary-black-hole population models using higher modes of gravitational radiation
Authors and Co-Authors : Mukesh Kumar Singh (International Centre for Theoretical Sciences, Tata Institute of Fundamental Research, Bengaluru), Shasvath J. Kapadia (International Centre for Theoretical Sciences, Tata Institute of Fundamental Research, Bengaluru), Parameswaran Ajith (International Centre for Theoretical Sciences, Tata Institute of Fundamental Research, Bengaluru)
Abstract Type : Poster
Abstract Category : General Relativity and Cosmology
Abstract : Gravitational waves (GWs) provide a unique opportunity to probe the populations of binary black-holes and their formation channels. Constraining models of these populations relies on the accurate and precise inference of parameters of individual binary black holes (BBHs), such as their masses and luminosity distances. To that end, the inclusion of higher modes of GWs, in addition to the dominant mode routinely used in BBH parameter-estimation, are expected to reduce the bias of inferred parameters, especially for asymmetric mass systems with inclined orbits. Focusing on realistic parametrized populations of non-spinning BBHs, we show that, while a large fraction of the individual BBHs has parameter-biases that are relatively small when inferred using only the dominant-mode waveforms, the resulting bias on the BBH population model-parameters can be significant, thus advocating the use of subdominant modes for model-parameter inference.