Q&A 97: By Request, Here's Our Dog. And Then Some Actual Questions...
In this week's questions show, I introduce Ona, by request. I explain why I don't think going to space is going to fix the big challenges that humanity faces, and how do astronomers figure out how big a planet is?
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Physics Girl interviewed Michael Landry at LIGO Hanford Observatory (https://youtu.be/uSzQPAzOoYg?t=720) and he said that there's a 1.7 second gap between the gravitational wave and the gamma rays arriving at earth (12:00). Is that because the light-emitting part of the collision between the binary neutron stars happens 1.7 seconds after the gravitational event, converting 3 solar masses into energy (22:15)?
Yeah, you get the gravitational waves as the neutron stars are about to collide. And then the flash of gamma rays after they've collided.