11–20 of 47 posts
original article: https://arxiv.org/abs/2510.21104 or https://journals.aps.org/prl/abstract/10.1103/xwqy-yzrk
Is it just ice? I thought most neutrino detectors were large underground pools of water. I mean ... tomāto/tomăto, yes, but is solid water better than liquid water?
Higher energy = "easier" to detect (produce more light or radio emission), but the events are rarer so you want to build a bigger detector.
There are also underwater pools of water being used :) (KM3Net,P-ONE, Baikal-GVD, etc.)
Earlier quoted context omitted.
The size of the detector can be very large, stable, and protected with an ice cap. https://icecube.wisc.edu/science/icecube/ There aren't a lot of places with multiple km of water without things like animal life or other confounders.
So, [controlled] liquid water is better but [controlled] solid water is more abundant?
Uniformity of the light field is going to be different, but that is not my sub-domain.
Earlier quoted context omitted.
So, [controlled] liquid water is better but [controlled] solid water is more abundant?
I wouldn't say liquid is "better". The neutrinos don't care from a cross section standpoint. Uniformity of the light field is going to be different, but that is not my sub-domain.
Just read the title and thought "Not now Cthulu, we've got enough going on"
Just read the title and thought "Not now Cthulu, we've got enough going on"
it was always burning since the world was turning
I was involved in this analysis if anybody has questions (though the student and postdoc did most of the real work) original article: https://arxiv.org/abs/2510.21104 or https://journals.aps.org/prl/abstract/10.1103/xwqy-yzrk
Is there any hope to have know more about them? To point at some and say "they are neutrinos" is a big promising step, but what about others? Was it a proton, or neutron, or electron or what? Where did this particle come from, and who was so pissed off to kick it that hard. I mean, I read wikipedia a lot, I have an idea what kind of processes can create these particles, but if we could find an extremely red shifted galaxy on a photo from James Webb and say that THAT proton came from there, it would be very nice.
I was involved in this analysis if anybody has questions (though the student and postdoc did most of the real work) original article: https://arxiv.org/abs/2510.21104 or https://journals.aps.org/prl/abstract/10.1103/xwqy-yzrk
All these high energy particles travel at tremendous speeds, and for them it looks like you traveled half the Universe in a fraction of a second. And then you've hit an Antarctic ice. I think I'd be extremely excited at this, because I'm sure any particle dreams about becoming alive, and falling on Earth give pretty solid chances to integrate into a living organism. And even maybe to fly to the Moon then, to build a…
But yes, one of the main reasons we are looking for ultra-energetic neutrinos is to try to understand the sources of high energy particles in general, as the highest energy charged particles are harder to point due to bending in magnetic fields. Measuring UHE protons from high red shifts is not possible due to the GZK mechanism, but that same mechanism will produce neutrinos that we are hoping to detect!
> With a new data release expected soon, covering all five ARA stations over several years, the ARA team now anticipates up to seven candidate neutrino events. I love the patience involved in this kind of science.
The 5-station analysis covering a number of years is coming out soon (but searching for neutrinos, not impacting air showers, which is what this PRL is about) .