- #1
okyl-dokyl-doo
- 9
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(1) Maybe should've messanged this, but given LIGO, the FAQ might need a light edit. It says,
"Gravitational waves have never been detected directly, but the loss of energy from the Hulse-Taylor binary pulsar has been checked to high precision against GR’s predictions of the power emitted in the form of gravitational waves. Therefore it is extremely unlikely that there is anything seriously wrong with general relativity’s description of gravitational waves."
(2) How can two zero-volume objects collide? Shouldn't they instead orbit one another infinitely?
Alternate version: Asked differently, but intending to be the same question, If two black holes collide, aren't we obliged to assume they have both (A) a center of gravity and (B) stuff around that center?
(I searched the backlog of posts and read the FAQ, but still, apologies if this has been asked and answered ad nauseam.)
"Gravitational waves have never been detected directly, but the loss of energy from the Hulse-Taylor binary pulsar has been checked to high precision against GR’s predictions of the power emitted in the form of gravitational waves. Therefore it is extremely unlikely that there is anything seriously wrong with general relativity’s description of gravitational waves."
(2) How can two zero-volume objects collide? Shouldn't they instead orbit one another infinitely?
Alternate version: Asked differently, but intending to be the same question, If two black holes collide, aren't we obliged to assume they have both (A) a center of gravity and (B) stuff around that center?
(I searched the backlog of posts and read the FAQ, but still, apologies if this has been asked and answered ad nauseam.)