Neutrino and Black Hole Interaction: Approaching, Passing, or Colliding?

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Discussion Overview

The discussion centers on the interaction of neutrinos with black holes, exploring how neutrinos behave when approaching, passing by, or colliding with a black hole. The conversation touches on theoretical aspects of particle physics and gravitational effects, comparing neutrinos to photons in terms of their interactions with massive objects.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant suggests that neutrinos would interact with a black hole similarly to light beams, falling in if directed at the black hole or having their paths bent if passing nearby.
  • Another participant questions the validity of comparing neutrinos to photons, noting differences in their properties, such as mass and interaction strength with matter.
  • Concerns are raised about the implications of neutrinos being weakly interacting particles versus photons, which interact strongly with everyday materials.
  • It is noted that while neutrinos and photons differ significantly, both are subject to gravitational effects.
  • A participant expresses confusion regarding the responses given, emphasizing the differences between neutrinos and photons and questioning why neutrinos would not behave differently.

Areas of Agreement / Disagreement

Participants express differing views on the similarities and differences between neutrinos and photons in their interactions with black holes. There is no consensus on how neutrinos should be expected to behave in this context.

Contextual Notes

The discussion highlights the complexity of particle interactions and the need for clarity regarding the assumptions made about neutrinos and photons, particularly in relation to gravitational effects and interaction characteristics.

conner.ubert
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How would a neutrino act in regards to a black hole? As in approaching, passing by or "colliding" with a black hole?
 
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Essentially the same as a light beam, since neutrinos travel at essentially the speed of light. If you fire one at the black hole it will fall in. If you fire it past the black hole its path will be bent, just like that of a beam of light. If you are far away from a black hole and look at neutrinos emitted from near the black hole they will be "red-shifted" (i.e., have lower energy than they had when they were emitted), just as light is red-shifted in traveling away from a large mass.
 
I can now see how a neutrino would interact act with a black hole due to the massiveness of a neutrino so it would act as any other particle would; however how does its properties give it the same interactive characteristics as a photon? But being the fact that neutrinos are extremely weakly interacting particles and photons are very interactive particles does that mean they have the same reaction to Doppler Shift and gravitational attraction? A neutrino has mass, a photon doesn't. A photon interacts strongly with everyday materials, a neutrino doesn't. A photon interacts with a electric field, but a neutrino doesn't because it has no charge. So there is no obvious reason as to why a neutrino should react the same as a photon.
 
Are you asking a question or are you answering it?
 
I asked a question, it was answered and it brought up another question. I am confused with the answer The Duck gave, as to the validity of the answer. Since the only thing that neutrinos have roughly in common with photons, besides being an elementary particle, is the speed at which they both travel. As I stated previously, they are two very different particles. So why wouldn't a neutrino act otherwise.
 
conner.ubert said:
I asked a question, it was answered and it brought up another question. I am confused with the answer The Duck gave, as to the validity of the answer. Since the only thing that neutrinos have roughly in common with photons, besides being an elementary particle, is the speed at which they both travel. As I stated previously, they are two very different particles. So why wouldn't a neutrino act otherwise.

Because while neutrinos interact very weakly with matter, they are still subject to gravity, just as photons are.
 

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