Colliding Neutron Stars Collapse into Black Holes

In summary: He also speaks of the collapse of the star into a black hole. What he doesn't mention is what happens to the particles as they go through this process. Presumably, they are annihilated and that's why we don't see anything left behind after the collapse.
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lavinia
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TL;DR Summary
Presentations of the recent observation of two colliding neutron stars state that physicists believe that the neutron stars "collapsed into a black hole." though they are not 100% certain.

What if anything is known about the transition from star to hole?
Here is a presentation on the discovery of two colliding neutron stars and the resulting phenomena such as gravity waves, gamma ray bursts, and synthesis of high atomic number elements. The author is a theoretical physicist who is involved in the research.



He says that the neutron stars most likely collapsed into a black hole - a very small one - but not a larger neutron star.

Question: During the collapse what do theoreticians predict about the transition from neutron to whatever is in a black hole? What in known about the path of changes that the neutron passes through?
 
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lavinia said:
resulting phenomena such as gravity waves
Note that there is a difference between gravity waves and gravitational waves. It is highly unfortunate that the video does not separate.

The black hole does not really ”consist” of anything in GR models. In a Schwarzschild black hole any infalling matter eventually reaches the singularity where it is expected that GR breaks down and quantum effects become important. As for what happens during collision between neutrons from the two stars it is a different question. @vanhees71 may be more familiar with those processes.
 
  • #3
Orodruin said:
Note that there is a difference between gravity waves and gravitational waves. It is highly unfortunate that the video does not separate.

The black hole does not really ”consist” of anything in GR models. In a Schwarzschild black hole any infalling matter eventually reaches the singularity where it is expected that GR breaks down and quantum effects become important. As for what happens during collision between neutrons from the two stars it is a different question. @vanhees71 may be more familiar with those processes.
Thank you. I am sure the presenter did not use the wrong language. It was my naive abuse of language.

He speaks of fluctuations in gravity which I guess are waves propagated in the metric.
 

Related to Colliding Neutron Stars Collapse into Black Holes

1. What is a neutron star?

A neutron star is a highly dense and compact object that is formed when a massive star undergoes a supernova explosion. It is composed almost entirely of neutrons and has a diameter of about 12 miles.

2. What happens when two neutron stars collide?

When two neutron stars collide, they release an enormous amount of energy and gravitational waves. This collision can also result in the formation of a black hole.

3. How do we detect colliding neutron stars?

We can detect colliding neutron stars through their gravitational waves, which are ripples in the fabric of space-time. These waves can be detected using specialized instruments such as the Laser Interferometer Gravitational-Wave Observatory (LIGO).

4. What is the significance of colliding neutron stars collapsing into black holes?

The collapse of colliding neutron stars into black holes is significant because it provides evidence for the existence of black holes and helps us better understand the process of black hole formation. It also allows us to study the properties of matter at extreme densities.

5. Could the collision of neutron stars lead to any potential dangers for Earth?

No, the collision of neutron stars does not pose any potential dangers for Earth. These events occur in distant parts of the universe and the energy released is not enough to affect our planet.

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