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Resolving Super Massive Black Holes with LISA

Babak, S., Hannam, Mark ORCID:, Husa, S. and Schutz, Bernard Frederick ORCID: 2008. Resolving Super Massive Black Holes with LISA. [Online]. arXiv. Available at:

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We study the angular resolution of the gravitational wave detector LISA and show that numerical relativity can drastically improve the accuracy of position location for coalescing Super Massive Black Hole (SMBH) binaries. For systems with total redshifted mass above $10^7 M_{\odot}$, LISA will mainly see the merger and ring-down of the gravitational wave (GW) signal, which can now be computed numerically using the full Einstein equations. Using numerical waveforms that also include about ten GW cycles of inspiral, we improve inspiral-only position estimates by an order of magnitude. We show that LISA localizes half of all such systems at $z=1$ to better than 3 arcminutes and the best 20% to within one arcminute. This will give excellent prospects for identifying the host galaxy.

Item Type: Website Content
Date Type: Published Online
Status: Submitted
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Publisher: arXiv
Last Modified: 21 Oct 2022 09:00

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