Black Hole Harmonics
Summary
PBS Space Time explores two papers claiming the detection of black hole harmonics in gravitational wave ringdowns, challenging prior assumptions about post-merger chaos. The episode explains how analyzing these overtones allows for precise measurement of black hole mass and spin, a technique dubbed gravitational wave spectroscopy. It also covers the team’s tentative support for the no-hair theorem and provides updates on the ongoing LIGO-Virgo third observing run.
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