Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [neutrinos]

Questions regarding a family of extremely low-mass, electrically neutral particles described in the Standard Model of particle physics.

6
votes
0answers
96 views

What object in the universe is most opaque to neutrinos?

I had this thought, and my first guess was "high density = lots of absorption, so I guess it's neutron stars" but this physics.se question about that has a great answer which covers why that's ...
3
votes
1answer
67 views

Star - Black Hole binary. Star core Collapses. Does the black hole immediately grow from neutrinos?

I was reading on how Type II Supernovae release as much as 99% of their energy as neutrinos. So I was thinking: suppose there was a large star and black hole binary system, but the two were not close ...
2
votes
2answers
101 views

How Does IceCube Trace a Neutrino to its Source?

I read the following claim in an article (Lisa Grossman, "Origin of Cosmic Oddities Proposed," Science News, February 17, 2018, 8). ... IceCube has already traced an especially high-energy neutrino ...
6
votes
1answer
130 views

Delay between neutrino pulse and visible flash of supernova

If you were orbiting a star undergoing a core-collapse supernova, what would be the delay between the neutrino pulse from the collapse and the first visible effects on the surface? Basically, I'm ...
11
votes
1answer
725 views

Do neutron stars shine?

Ignore pulsars and the like, just a neutron star in empty space – does it emit light and neutrinos?
1
vote
2answers
107 views

Is there any cosmological evidence that neutrinos travel at a speed other than c?

I've been looking into neutrinos. One thing I'm puzzled about is how fast they travel. See the Wikipedia SN1987A article where you can read this: “approximately two to three hours before the visible ...
3
votes
2answers
125 views

Why do neutrinos take time to scatter?

After a supernova neutrinos get released by electron capture,and they escape in a flood. My guess is because they have tiny masses and get momentum from momentum conservation. However, the huge ...
8
votes
1answer
635 views

Neutrinos passing through black holes

What would happen to a neutrino that, traveling parallel to the black hole, crossed it's event horizon? Would it come through the other side unaffected? Or, A neutrino and a black hole just happen to ...
19
votes
1answer
398 views

Multi-messenger astronomy: what is the potential of simultaneous detection of gravitational waves and neutrinos from a supernova?

Thanks to the efforts of the aLIGO team, gravitational wave astronomy is a reality. At the same time, neutrino detectors like Hyperkamiokande are becoming much more sensitive. My question is: what ...
10
votes
2answers
1k views

Is the earth bombarded equally in all directions by neutrinos?

Perhaps it is hard to known for sure because neutrinos are very difficult to detect, although they do go through the earth in very large numbers. But are they passing through the earth equally from ...
3
votes
1answer
167 views

Do neutrinos have as much information as photons do?

If neutrino detectors keep improving so that a fair number of neutrinos can be observed, would they be as informative for astronomy as photons are? They are of course a very valuable complement to ...
1
vote
2answers
93 views

Why do we have so few neutrinos to study?

According to Wikipedia most neutrinos passing through the Earth emanate from the Sun. About 65 billion (6.5^10) solar neutrinos per second pass through every square centimeter perpendicular to the ...
12
votes
1answer
501 views

How Are Radioactive Decay Rates Influenced by Neutrinos - On Earth and Other Dense Planets

I read a science report recently that mentioned an accidental discovery where radioactive decay rates shifted slightly slower in advance ( about a day and a half) of solar storms or in sync with sun's ...
2
votes
1answer
230 views

Are neutrinos affected by gravity fields?

Am asking if a neutrino can be pull by the gravity field of a quasar or a black hole, assuming the neutrino have momentum. It could be possible in the that a neutrino can orbit a black hole at an ...
-1
votes
2answers
207 views

Nuetrino interaction with plasma and electromagnetism [closed]

Following question enter link description here After watching the Thunderbolt Project on Youtube I have a very very very fresh perspective on the universe - the electric universe. From the electric ...
9
votes
2answers
108 views

Neutrino interaction with dense molecular structures

Would dense molecular structures on heavier planets (crystalline or other compounds which are generally unknown to us) allow neutrinos to pass through as easily as on Earth?
14
votes
1answer
165 views

How Does Cosmology Constrain the Number of Neutrino Species?

I've asked this question already on the Physics SE, but I felt it would be worth posting here as well. I know that based upon theories of structure formation cosmologists can constrain the sum of the ...