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Eccentric Black Hole Mergers in Dense Star Clusters: The Role of Binary–Binary Encounters by Michael Zevin; Johan Samsing; Carl Rodriguez; Carl-Johan Haster; Enrico Ramirez-Ruiz is a Physics and Astronomy article available to read on EtoBox.
What is Eccentric Black Hole Mergers in Dense Star Clusters: The Role of Binary–Binary Encounters about?
We present the first systematic study of strong binary-single and binary-binary black hole (BH) interactions with the inclusion of general relativity. By including general relativistic effects in the equations of motion during strong encounters, the dissipation of orbital energy from the emission of gravitational waves (GWs) can lead to captures and subsequent inspirals with appreciable eccentricities when entering the sensitive frequency ranges of the LIGO and Virgo GW detectors. It has been shown that binary-single interactions significantly contribute to the rate of eccentric mergers, but no studies have looked exclusively into the contribution from binary-binary interactions. To this end, we perform binary-binary and binary-single scattering experiments with general relativistic dynamics up through the 2.5 post-Newtonian order included, both in a controlled setting to gauge the importance of nondissipative post-Newtonian terms and derive scaling relations for the cross section of GW captures, as well as experiments tuned to the strong interactions from state-of-the art globular cluster (GC) models to assess the relative importance of the binary-binary channel in facilitating GW
Who reads Eccentric Black Hole Mergers in Dense Star Clusters: The Role of Binary–Binary Encounters?
It is typically read by researchers, students, and practitioners in Physics and Astronomy.
- Author
- Michael Zevin; Johan Samsing; Carl Rodriguez; Carl-Johan Haster; Enrico Ramirez-Ruiz
- Publisher
- University of Chicago Press; American Astronomical Society; Institute of Physics Publishing; IOP Publishing; Oxford University Press (OUP) (ISSN 0004-637X)
- Published
- 2019
- Language
- EN
- Field
- Physics and Astronomy (Physical Sciences)