Can gravitational waves be detected in quasar microlensing?

Details Can gravitational waves be detected in quasar microlensing? Can gravitational waves be detected in quasar microlensing?

2000-07-11

arxiv.org/abs/astro-ph/0007142v1

Astronomy and Astrophysics

Astrophysics

10 pages, 1 fig; submitted to ApJ

Scientific paper

Studies of the lensed quasar ${\rm Q}0957+561 {\rm A,B}$ have shown evidence for microlensing in the brightness history of the quasar images. It had been suggested that a frequency offset between the brightness fluctuations in each of the two images might possibly be caused by gravitational radiation generated by a massive black hole binary at the center of the lensing galaxy. This paper demonstrates that the fluctuations produced by such a source of gravitational waves will be too small to account for the observed frequency offsets.

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