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RE: What Happens If the Sun Replaced by a Neutron Star?
Hey there, you are not considering something important. What is the mass of your supposed Neutron star? If it is the mass of the Sun then there will be no change in the orbits. You must consider Newtons law of Gravity. The gravitational strength depends on the mass. Only if the mass was much greater would the planets experience a stronger force. You could replace the Sun with a Black hole, if it was a black hole of 1 solar mass then nothing would happen, it would be dark but no change in orbit. The orbits will only change if there is a change in the mass of the solar object.
You must make sure you consider the physics before making points.
Good job on the article, but you must ensure you are stating scientific facts.
:)
Do neutron stars with such a low mass even exist?
Typical Neutron stars can be produced in a type Ia super nova event, the process leaves behind a neutron star with mass about 1.4 Mo, but there are examples of lower mass N-stars as low as 0.5 Mo
http://iopscience.iop.org/article/10.1086/376515
But here it is said that the neutron star has the gravitational field at a neutron star's surface is about 2×1011 times stronger than on Earth, at around 2.0×1012 m/s2.
thanks @physics.benjamin
:)
I want you to get good upvotes @whalhesa, I have corrected you here so that in the future it can help you improve. It's important as scientists to state facts well and consider the physical processes. With this feed back I hope that in the future you will consider more deeply the physical relationships, this way you can learn better and teach others effectively.
thanks @physics.benjamin for your correction.....
this is a new knowledge for me, I do not think there is a neutron star with a mass under the sun
:)
They do indeed exists, I found an article quickly to prove so
http://iopscience.iop.org/article/10.1086/376515
The neutron star you refer to is due to a type Ia supernova, this event produces neutron stars with masses about 1.4 solar mass.
If you replaced the Sun with a neutron star of the same mass (1Mo) then there would be absolutely no changed in the orbits. If you replaced it with any stellar object with a different mass then the orbits will change.
The point you made about surface gravity is true, but it's due to the mass being compressed into a smaller volume, so the radius is smaller.
By studying this equation it's clear why this is true.
So this statement is a bit misleading, only if the mass of the neutron star was larger than the sun this statement is kind of true. Neutron stars can have masses as low as 0.5 solar mass.
It's cool dude, just trying to clear up an important point about the physics. I have the Bsc in Astrophysics so I have to use my knowledge somewhere :)
I hope this information helped. :)