Can Black Holes be Propelled by Ion Engines?

In summary, the conversation discusses the possibility of using ion engines to propel black holes and the potential for high velocities over time. It also mentions the detection of motion of an associated binary massive star using the Large Synoptic Telescope. The idea is debated and it is determined that while high velocities could potentially be achieved, it would require immense asymmetry and would not be solely due to jet thrust.
  • #1
cph
43
0
Jet propelled Black Holes by ion engine? Might asymmetry of jets for BH, together with Newton’s Third Law, result in high velocity over time, from an ion engine? Perhaps even several 100 km/s? Might Large Synoptic Telescope detect motion of associated binary massive star?
 
Astronomy news on Phys.org
  • #2
cph said:
Jet propelled Black Holes by ion engine? Might asymmetry of jets for BH, together with Newton’s Third Law, result in high velocity over time, from an ion engine? Perhaps even several 100 km/s? Might Large Synoptic Telescope detect motion of associated binary massive star?

What's your question, are you asking if it would be possible to do so? Why would you want to anyway?
 
  • #3
cph said:
Might asymmetry of jets for BH, together with Newton’s Third Law, result in high velocity over time, from an ion engine?
No, not really. The asymmetry would have to be immense.
BH can obtain large velocities from close-encounters, supernova kicks, or gravitational radiation after a merger.
 
  • #4
IIRC, if a close binary partner goes supernova, the other partner may be flung off at speeds up to ~ 700 kilometres per second.

AFAIR, the remnant's polar jets will be equal, to first approximation. Motion will not be due to 'jet thrust', just the result of orbital velocity...
 
  • #5
Nik_2213 said:
IIRC, if a close binary partner goes supernova, the other partner may be flung off at speeds up to ~ 700 kilometres per second.
You can't reach those velocites from such a mechanism. To unbind the BH, the partner's supernova would have to eject at least half the mass of the system. You might be able to reach ~ 100 km/s with a strong kick, and high mass ejection.
 

1. What is a jet propelled black hole?

A jet propelled black hole is a type of black hole that emits powerful jets of particles at near the speed of light. These jets are believed to originate from the accretion disk surrounding the black hole, where matter is heated and accelerated before being ejected in the form of jets.

2. How are jet propelled black holes formed?

Jet propelled black holes are formed from the collapse of a massive star. As the star runs out of fuel, it can no longer support its own weight and collapses under its own gravity. This results in a singularity, a point of infinite density, surrounded by an event horizon, the boundary beyond which nothing, including light, can escape.

3. How are the jets in jet propelled black holes produced?

The jets in jet propelled black holes are produced through a process called magnetic reconnection. As matter falls into the black hole, its magnetic field becomes twisted and entangled. When this happens, the magnetic field can suddenly snap and release a tremendous amount of energy, which propels the jets outward.

4. What is the significance of studying jet propelled black holes?

Studying jet propelled black holes can help us understand the extreme conditions that exist near black holes, such as intense gravity, high temperatures, and strong magnetic fields. It can also provide insights into the formation and evolution of galaxies, as black hole jets can influence the growth of surrounding structures.

5. Can jet propelled black holes pose a threat to Earth?

No, jet propelled black holes do not pose a threat to Earth. They are located in distant regions of the universe and are too far away to affect us. Additionally, their jets are highly collimated, meaning they are focused in a narrow beam, and would not pose a danger even if they were closer to us.

Similar threads

  • Astronomy and Astrophysics
Replies
11
Views
2K
  • Astronomy and Astrophysics
Replies
4
Views
1K
  • Astronomy and Astrophysics
3
Replies
87
Views
4K
  • Astronomy and Astrophysics
2
Replies
55
Views
7K
  • Astronomy and Astrophysics
Replies
1
Views
1K
  • Special and General Relativity
Replies
23
Views
1K
Replies
3
Views
3K
  • Astronomy and Astrophysics
Replies
1
Views
2K
Replies
12
Views
3K
  • Astronomy and Astrophysics
Replies
13
Views
2K
Back
Top