Naked Science Forum

Non Life Sciences => Physics, Astronomy & Cosmology => Topic started by: neilep on 07/12/2008 12:45:16

Title: Can Neutrinos Flow Through A Neutron Star ?
Post by: neilep on 07/12/2008 12:45:16

Dear Neutronstarologists,

As a sheepy I’m quite a bright fellow really, ask me anything and I will give ewe an honest answer…occasionally, I may even answer correctly….A neutron star is really thick !...it’s about as dense as dense can get !

Look here’s one being the stupidest thing in the universe !

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Nice eh ?

A sugar cube size of this things ways about 40 grams, erhmm no…actually that’s not quite right, I mean 400 billion tons !


Being so dense, Can Neutron stars stop neutrinos from flowing right through them ?




Whajafink ?



Neil
Marginally Less Dense Than A Neutron Star
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Title: Can Neutrinos Flow Through A Neutron Star ?
Post by: DoctorBeaver on 07/12/2008 14:18:29

Gawd, everyone knows the answer to this  [::)]

Title: Can Neutrinos Flow Through A Neutron Star ?
Post by: Soul Surfer on 07/12/2008 16:13:02

I don't know the exact answer but Neutrinos escape quite easily form normal stars and white dwarfs.  Neutron stars are very considerably more dense but they are also much smaller at only a few miles across so my guess is although they might get a few interactions getting out they wouldn't find it all that difficult compared with radiation or any other sort of particle.

Title: Can Neutrinos Flow Through A Neutron Star ?
Post by: Mr. Scientist on 31/12/2008 12:03:48

Depends i would hae thought, how energetic due to speed the neutron was.

Title: Can Neutrinos Flow Through A Neutron Star ?
Post by: Soul Surfer on 31/12/2008 12:32:19

We are not talking about neutrons but neutrinos which are essentially uncharged electrons. Neutrinos only ineract using the weak interaction and could pass through the sun quite easily without interacting with anything.

The loss of energy due to neutrino radiation is one of the things that cause certain types stars to suffer from an abrupt core collapse and explode as a supernova

Title: Can Neutrinos Flow Through A Neutron Star ?
Post by: syhprum on 31/12/2008 16:36:31

"Neutrinos which are essentially uncharged electrons"
The mass of a Neutrino is vastly less than that of an Electron, is the latest thinking that the mass of a Electron is mostly due to its charge

Title: Can Neutrinos Flow Through A Neutron Star ?
Post by: lightarrow on 01/01/2009 16:08:23

Quote from: syhprum on 31/12/2008 16:36:31

"Neutrinos which are essentially uncharged electrons"
The mass of a Neutrino is vastly less than that of an Electron,

this is correct; furthermore, there are three tipes of neutrinos: electronic, muonic, tauonic.

Quote

is the latest thinking that the mass of a Electron is mostly due to its charge

This is actually an old idea, described also in one of the books: "The Feynman lectures on Physics" (but the idea is older). Didn't know that it has been come out again. Where did you find it?

Title: Can Neutrinos Flow Through A Neutron Star ?
Post by: Mr. Scientist on 02/01/2009 07:43:04

Oh right, i read it as neutrons. Sorry.