Open AccessThe Acceleration of the Gravitational Wave Events Through the Circumbinary Disk Around Two Inspiraling Black Holes
Author(s) -
Jiachen Nie,
N. Cao,
Xinghan Chen
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/658/1/012034
Subject(s) - circumbinary planet , physics , astrophysics , gravitational wave , angular momentum , black hole (networking) , binary black hole , observable , gravitation , binary number , astronomy , classical mechanics , planet , quantum mechanics , computer network , routing protocol , routing (electronic design automation) , arithmetic , mathematics , computer science , link state routing protocol
The observation of gravitational wave opens a new window for both physics and astrophysics. Among the models of the formation of binary black holes (BHs), some suggest the existence of circumbinary disk, which may provide the material to ignite the electromagnetic radiation observable to modern astronomical facilities. In this work, we investigate the consequences of such circumbinary disk, with an emphasis on the reduction in the BH-BH merger timescale, i.e. the total time necessary for the gravitational wave events to happen. We find that, the circumbinary disk excites a tidal torque onto the BH-BH system, and it dominates the angular momentum transfer (outward) when the BH-BH separation a> xxx. Theoretical implications of this result are discussed.