<p>Prompted by a recent <a href="https://www.youtube.com/watch?v=Q6kJaMf3Lgo" rel="nofollow noreferrer">PBS SpaceTime video</a></p>
<p>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 &quot;Hawking star&quot;), 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 &quot;Hawking brown dwarf&quot; or &quot;Hawking planet&quot;?</p>

CC BY-SA 4.0
2023-12-21T06:00:28.390Z
Wouldn't it form a very short-lived miniature quasar?
bandybabboon
CC BY-SA 4.0
2023-12-21T08:26:03.133Z
What do you mean by captured?
ProfRob
CC BY-SA 4.0
2023-12-21T09:43:36.543Z
A recent related question: https://astronomy.stackexchange.com/q/55461/16685
PM 2Ring
CC BY-SA 4.0
2023-12-21T09:50:49.880Z
@bandybabboon Such black holes have a Schwarzschild radius of under a micron, so the rate that they absorb matter is quite small.
PM 2Ring
CC BY-SA 4.0
2023-12-21T15:50:41.340Z
@ProfRob captured in this context means the black hole is in the core of the brown dwarf/planet.
asgallant
<black-hole><planet><brown-dwarf>
What would happen if a low-mass primordial black hole was captured by a brown dwarf or planet mass object?
asgallant
# What would happen if a low-mass primordial black hole was captured by a brown dwarf or planet mass object?

(Asked by: username_0 on 2023-12-21)

Prompted by a recent [PBS SpaceTime video](https://www.youtube.com/watch?v=Q6kJaMf3Lgo)

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"?

**Tags:** black-hole, planet, brown-dwarf

> **Comments:**
> **username_1**: Wouldn't it form a very short-lived miniature quasar?  
> **username_2**: What do you mean by captured?  
> **username_3**: A recent related question: https://astronomy.stackexchange.com/q/55461/16685  
> **username_3**: @username_1 Such black holes have a Schwarzschild radius of under a micron, so the rate that they absorb matter is quite small.  
> **username_0**: @username_2 captured in this context means the black hole is in the core of the brown dwarf/planet.  

---

## 0 answers

