Possibility to determine the radius of accretion disk by gravitational waves

H. Sotani*, Motoyuki Saijo

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We investigate gravitational waves from a dust disk around a Schwarzschild black hole to focus on whether we can extract any of its physical properties from a direct detection of gravitational waves. We adopt a black hole perturbation approach in a time domain, which is a satisfactory approximation to illustrate a dust disk in a supermassive black hole. We find that we can determine the radius of the disk by using the power spectrum of gravitational waves and that our method to extract the radius works for a disk of arbitrary density distribution. Therefore we believe a possibility exists for determining the radius of the disk from a direct observation of gravitational waves detected by the Laser Interferometer Space Antenna.

Original languageEnglish
Article number012053
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 2007 Jun 1
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


Dive into the research topics of 'Possibility to determine the radius of accretion disk by gravitational waves'. Together they form a unique fingerprint.

Cite this