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cousinbrycetoday at 2:32 PM5 repliesview on HN

Anyone have guesses about how a transiting primordial black hole would effect a Sun like star? Paper is about tidal forces inducing supernova in white dwarfs. For that matter how might it effect sea tides?


Replies

jandrewrogerstoday at 4:16 PM

Most likely minimal? The mass is low.

I am, however, reminded that the orbit of the asteroid Juno (~250km diameter) permanently changed in 1839 without an obvious cause.

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pavel_lishintoday at 2:53 PM

For the latter, you mught enjoy Greg Egan's "Perihelion Summer".

antogninitoday at 4:04 PM

We have constraints that primordial black holes must be less than the size of a large asteroid. They would be gravitationally insignificant to the Earth unless they actually passed through it.

I also don't think it would really be detectable in the Sun. Perhaps there would be some transient astroseismology signature.

temp0826today at 4:37 PM

Picturing the crust of the earth being pulled off like an orange peel. But maybe seen too much scifi so it's probably a lot more boring :/

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ButlerianJihadtoday at 2:56 PM

fnord

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