<p>When two neutron stars collide, the resulting supernova is called a &quot;kilonova,&quot; producing much more energy than a regular supernova. Additionally, heavier elements are formed, such as gold, platinum, etc. Other effects of this collision include a gamma-ray burst and/or gravitational waves. The object formed after the event can either be a heavier neutron star, or a black hole (if the mass of the merger exceeds the maximum mass of a neutron star, about 3 solar masses).</p>
<p>As of right now, we have not detected a neutron star merger that is visible to the naked eye; almost all of them occurred in different galaxies, billions of light-years away. I hope this helps.</p>

CC BY-SA 4.0
2020-12-16T08:18:48.537Z
Why do you say that a kilonova produces more energy than a supernova? The ejecta from a kilonova can have higher speeds than supernova ejecta, but the total energy released is generally much smaller. Please see the question linked above by antispinwards.
PM 2Ring
CC BY-SA 4.0
2020-12-14T14:05:58.840Z
2020-12-14T14:05:58.840Z
WarpPrime
<p>If two neutrons stars that are orbiting were to collide, how big would the supernova explosion be?</p>
<p>Would a new black hole or a new supernova remnant be formed?</p>

CC BY-SA 4.0
2020-12-14T13:32:02.450Z
What is a "neutron supernova collision"?
peterh
<black-hole><supernova><neutron-star><deep-sky-observing><kilonova>
How big would the supernova when a neutron star collides with another neutron star?
Partvision
# How big would the supernova when a neutron star collides with another neutron star?

(Asked by: username_0 on 2020-12-14)

If two neutrons stars that are orbiting were to collide, how big would the supernova explosion be?

Would a new black hole or a new supernova remnant be formed?

**Tags:** black-hole, supernova, neutron-star, deep-sky-observing, kilonova

> **Comments:**
> **username_1**: What is a "neutron supernova collision"?  

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## 1 answers

### Answer by username_2 on 2020-12-14. Score: 2

When two neutron stars collide, the resulting supernova is called a "kilonova," producing much more energy than a regular supernova. Additionally, heavier elements are formed, such as gold, platinum, etc. Other effects of this collision include a gamma-ray burst and/or gravitational waves. The object formed after the event can either be a heavier neutron star, or a black hole (if the mass of the merger exceeds the maximum mass of a neutron star, about 3 solar masses).

As of right now, we have not detected a neutron star merger that is visible to the naked eye; almost all of them occurred in different galaxies, billions of light-years away. I hope this helps.

> **Comments:**
> **username_3**: Why do you say that a kilonova produces more energy than a supernova? The ejecta from a kilonova can have higher speeds than supernova ejecta, but the total energy released is generally much smaller. Please see the question linked above by antispinwards.  

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