How do black holes affect neutrinos?

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Offline bizerl

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How do black holes affect neutrinos?
« on: 04/10/2012 01:36:14 »
From what I understand, neutrinos tend to ignore pretty much everything. I think Dr Karl suggested that a wall of lead a couple of dozen light years thick might be enough to shield them.

So what about black holes? Are they just as susceptible to gravity as photons?

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Offline yor_on

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Re: How do black holes affect neutrinos?
« Reply #1 on: 04/10/2012 14:43:37 »
if neutrinos have mass they must follow 'geodesics'. In those cases where they aren't found to have mass you must ask yourself if they have a 'energy'. If your answer is yes then they must follow a geodesic too. As for if a black hole interacts gravitationally with the rest of the universe I would say, naturally they must :) If they didn't, there would be no paths towards them, and neither would they attract any matter, if that was what you meant Biz?
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Offline bizerl

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Re: How do black holes affect neutrinos?
« Reply #2 on: 04/10/2012 23:39:04 »
I can see the original post was a tad unclear. sorry. [:(]

What I was wondering was that if neutrinos are such weakly interacting particles, and can go through the Earth as if it wasn't there, then surely it would have a weaker interaction with gravity, and therefore a weaker interaction with black holes.

I realise it isn't possible for them to have a weaker interaction with black holes than photons could (unless you use faulty cabling  [;)]) but I was just trying to get my head around why?

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Offline imatfaal

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Re: How do black holes affect neutrinos?
« Reply #3 on: 06/10/2012 16:02:12 »
I would have to assume that as they have mass, neutrinos would be affected by the gravity of a blackhole just like any other form of matter.  The reason they go through earth like it isn't there, is that they do not react/interact/bump any of the charged particles that make up the earth.  I would guess they speed up an infinitesimally small amount as they approach and slow down as they leave due to the action of gravity.
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