SIMBAD references

2020MNRAS.496.5575S - Mon. Not. R. Astron. Soc., 496, 5575-5583 (2020/August-3)

Coupling of dual mass-transferring white dwarf binaries as a variable gravitational-wave emitter.

SETO N.

Abstract (from CDS):

We study evolution of a hierarchical four-body (2 + 2) system composed by a pair of mass-transferring white dwarf binaries. Applying a simplified model around the synchronous state of two inner orbital periods, we newly find that the four-body system could settle down to a limit cycle with a small period gap. The period gap generates an amplitude variation of emitted gravitational waves as a beat effect. Depending on model parameters, the beat period could be 1-10 yr and a large amplitude variation might be observed by space gravitational-wave detectors.

Abstract Copyright: © 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): gravitational waves - celestial mechanics - stars: kinematics and dynamics - binaries: close

Simbad objects: 1

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