Supernova remnants & neutron star

In summary, the conversation discusses the outcomes of supernovae, specifically whether they all produce a nebula and a neutron star at the center. It is revealed that not all supernovae produce a nebula, and some may form black holes instead of neutron stars. The Kepler supernova is mentioned, with evidence of a remnant in the form of glowing dust and gas. However, it is clarified that this particular supernova did not leave behind a neutron star. The conversation also poses the question of whether these outcomes remain forever, to which there is no conclusive evidence due to the young age of the universe.
  • #1
shounakbhatta
288
1
Hello,

I want to understand: just as the Crab Nebula is the result of SN 1054 and has a neutron star spinning at the center:

(a) Does all supernova produces a nebula?
(b) Does all supernova remnant has a neutron star at the center?
(c) What is the outcome of Kepler supernova i.e. SN 1604? I mean to ask has it formed a stellar remnant or a neutron star?

(d) Say, if we consider a supernova, S, which has happened in the year 1000, then the stellar remnant, the neutron star or whatever other outcomes have come in that supernova, does it remain forever? I mean to say, is there a specific time duration, after which things die out and nothing is there from that specific supernova?

Thanks.
 
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  • #2
shounakbhatta said:
(b) Does all supernova remnant has a neutron star at the center?

No, some of them form black holes.
 
  • #3
Some stars are destroyed by the explosion [pair instability supernova], most become neutron stars, and some possibly become black holes - although we have no observational evidence of a black hole that formed as a consequence of a supernova. Neutron stars, like white dwarfs, are believed capable of surviving for many billions of years before succumbing to old age and becoming black dwarfs. The universe is believed to be too young for this to have yet happened. Neutron stars are also difficult to detect. They are very small and nearly invisible below x ray wavelengths. Neutron stars are also considered strong candidates for gamma ray bursts, some of which are believed to be the result of neutron star mergers. It is also believed such mergers can lead to the formation of a black hole.
 
  • #4
One question: Is there any stellar remnant or a neutron star as a result of the Kepler super nova?
 
  • #5
Yes, an image taken with the Chandra X-ray observatory is here http://chandra.harvard.edu/photo/2012/kepler/. This little wisp of glowing dust and gas is all that remains. It was produced by a type Ia supernova, which destroys the progenitor star.
 
  • #6
That means it does not have a neutron star?
 
  • #7
Yes, it only left that little puff of smoke.
 

FAQ: Supernova remnants & neutron star

1. What is a supernova remnant?

A supernova remnant is the leftover material from a massive star that has exploded in a supernova. This material can include gas, dust, and other elements that were created during the explosion.

2. How are supernova remnants formed?

Supernova remnants are formed when a massive star reaches the end of its life and can no longer sustain its nuclear fusion reactions. The star then collapses and explodes, ejecting its outer layers into space.

3. What is a neutron star?

A neutron star is a type of highly compacted star that is formed when a massive star explodes in a supernova. It is incredibly dense and is composed mostly of neutrons.

4. How are neutron stars related to supernova remnants?

Neutron stars are often found at the center of supernova remnants, as they are the leftover core of the star that exploded. The intense energy and radiation from the neutron star can also help shape and influence the structure of the supernova remnant.

5. What can we learn from studying supernova remnants and neutron stars?

Studying supernova remnants and neutron stars can provide valuable insights into the life cycle of stars, as well as the processes involved in supernova explosions. It can also help us better understand the formation of elements and the properties of extremely dense matter.

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