What would happen if a low-mass primordial black hole was captured by a brown dwarf or planet mass object?

Asked Dec 21 '23 at 02:31

Active Dec 21 '23 at 15:58

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Prompted by a recent PBS SpaceTime video

The video in question discusses what would happen if a low-mass (asteroid-mass) primordial black hole were captured in the core of a Sun-like star (a so-called "Hawking star"), and how it would influence the evolution and characteristics of the star. While the effects might not be particularly obvious for younger G-class stars, it feels intuitively likely that the lower the mass of the star, the greater the proprotional effect would be. In the extreme, a brown dwarf or planet-mass object seems likely to be altered dramatically by the presence of such a PBH. What might those effects be on a "Hawking brown dwarf" or "Hawking planet"?

edited Dec 21 '23 at 15:58

asked Dec 21 '23 at 02:31

asgallant

Wouldn't it form a very short-lived miniature quasar? – bandybabboon Dec 21 '23 at 06:00
What do you mean by captured? – ProfRob Dec 21 '23 at 08:26
A recent related question: https://astronomy.stackexchange.com/q/55461/16685 – PM 2Ring Dec 21 '23 at 09:43
@bandybabboon Such black holes have a Schwarzschild radius of under a micron, so the rate that they absorb matter is quite small. – PM 2Ring Dec 21 '23 at 09:50
@ProfRob captured in this context means the black hole is in the core of the brown dwarf/planet. – asgallant Dec 21 '23 at 15:50

What would happen if a low-mass primordial black hole was captured by a brown dwarf or planet mass object?

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