Probing the very small scale dark matter distribution with gravitational waves

The spatial distribution of dark matter at small scale is a key for understanding the nature of dark matter, yet it is difficult to probe.  Prof. Masamune Oguri (Center for Frontier Science, Chiba University, Japan) argues that it would be possible to probe the very small scale dark matter distribution with gravitational waves, as wave optics effects caused by intervening dark matter distributions modify their amplitudes and phases. He will discuss the expected signals, including how those amplitude and phase fluctuations could be enhanced due to gravitational lensing magnifications.