Worldtube excision method for intermediate-mass-ratio inspirals: scalar-field toy model
APA
Rüter, H. (2021). Worldtube excision method for intermediate-mass-ratio inspirals: scalar-field toy model. Perimeter Institute. https://pirsa.org/21060064
MLA
Rüter, Hannes. Worldtube excision method for intermediate-mass-ratio inspirals: scalar-field toy model. Perimeter Institute, Jun. 08, 2021, https://pirsa.org/21060064
BibTex
@misc{ pirsa_PIRSA:21060064, doi = {10.48660/21060064}, url = {https://pirsa.org/21060064}, author = {R{\"u}ter, Hannes}, keywords = {Other}, language = {en}, title = {Worldtube excision method for intermediate-mass-ratio inspirals: scalar-field toy model}, publisher = {Perimeter Institute}, year = {2021}, month = {jun}, note = {PIRSA:21060064 see, \url{https://pirsa.org}} }
Max Planck Institute for Gravitational Physics (Albert Einstein Institute) and Institute for Gravitational Physics of the Leibniz Universität Hannover
Talk Type
Subject
Abstract
"We propose and explore a method for alleviating the scale disparity in numerical relativity simulations with mass ratios in the intermediate astrophysical range ($10^2 \lesssim q\lesssim 10^4$), where purely perturbative methods may not be adequate. A region around the smaller object considerably smaller than its horizon is excised from the numerical domain, and replaced with an analytical model approximating a tidally deformed black hole. We develop the basic idea and try it on the toy model of a scalar charge in a circular geodesic orbit around a Schwarzschild black hole, solving for the scalar field as a linear perturbation in a 1+1D framework.
Collaborators: Mekhi Dhesi, Adam Pound, Leor Brack, Harald Pfeiffer"