Good book.
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My wife saw a review in the Dutch press - Schilling is a Dutch science journalist - and thought - correctly - that I'd like it.
It's not all that off-topic. There's a lot of electronics in LIGO, and the other scheme for detecting lower frequency gravitational waves, like monitoring a bunch of millisecond pulsars with radio-telescopes, use even more.
The orbiting version of LIGO (which are coming on) will pick-up lower frequency gravitational waves than LIGO, primarily because there's less low frequency seismic noise in space, but there's also room for much longer arms on the interferometer.
It won't really compete with pulsar monitoring - there the arms are light-years long.