Astronomers found a high energy neutrino – a cosmic ray – that apparently originated during a “tidal disruption event,” that is, when a supermassive black hole shredded a distant star. Source: https://earthsky.org/space/origin-cosmic-ray-when-black-hole-shreds-star…
Tag: neutrinos
Ghost particle from shredded star reveals cosmic particle accelerator
Tracing back a ghostly particle to a shredded star, scientists have uncovered a gigantic cosmic particle accelerator. The subatomic particle, called a neutrino, was hurled towards Earth after the doomed star came too close to the supermassive black hole at the center of its home galaxy and was ripped apart by the black hole’s colossal gravity. It is the first particle…
Scientists claim that all high-energy cosmic neutrinos are born by quasars
Scientists of the P. N. Lebedev Physical Institute of the Russian Academy of Sciences (LPI RAS), the Moscow Institute of Physics and Technology (MIPT) and the Institute for Nuclear Research of RAS (INR RAS) have studied the arrival directions of astrophysical neutrinos with energies more than a trillion electronvolts (TeV) and came to an unexpected conclusion: all of them are born…
Researchers detect galactic source of gamma rays that could produce very high-energy cosmic rays
IFIC researcher Francisco Salesa Greus, along with other members of the HAWC collaboration, have detected very high-energy photons from a galactic source that could produce cosmic rays. The detection of neutrinos through telescopes such as KM3NeT or IceCube would confirm the study. This finding has been published in The Astrophysical Journal Letters. Source: https://phys.org/news/2021-02-galactic-source-gamma-rays-high-energy.html…
A proposal for a neutrino detection array spanning 200,000 square kilometers
Sometimes in astronomy, the acronym for a project fits it particularly well. That would absolutely be the case for the Giant Radio Array for Neutrino Detection, which researchers hope to scale up to a size of 200,000 km2 in an effort to measure ultra-high-energy tau neutrinos. Is it ambitious? Yes, but that doesn’t really stop humanity from exploring when it wants…
First measurement of single-proton interactions with the MicroBooNE detector
Neutrinos are as mysterious as they are ubiquitous. One of the most abundant particles in the universe, they pass through most matter unnoticed. Their masses are so tiny that so far no experiment has succeeded in measuring them, while they travel at nearly the speed of light. …
Searching for sub-eV sterile neutrinos using two highly sensitive detectors
The standard model of particle physics only accounts for 20% of matter in the universe. Physicists have theorized that the remaining 80% is made up by so-called dark matter, which consists of particles that do not emit, absorb or reflect light and thus cannot be directly observed using any existing instruments. …
For the First Time Scientists Detect Neutrinos Traced To CNO Cycle Inside the Sun
NBC News calls it “the ghostly signal that reveals the engine of the universe.” Long-time Slashdot reader fahrbot-bot shares their report: In research published Wednesday in the journal Nature, scientists reported that they’ve made the first detection of almost-ethereal particles called neutrinos that can be traced to carbon-nitrogen-oxygen fusion, known as the CNO cycle, inside the sun. It’s a landmark finding…
Will unboxing videos mixed with ASMR be the latest PR craze?
Unboxing brain orgasms, plus pencils that circumnavigate the world and energy from neutrinos, in Feedback’s weird weekly round up Source: https://www.newscientist.com/article/mg24833081-900-will-unboxing-videos-mixed-with-asmr-be-the-latest-pr-craze/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home…
Warm pasta helps hot, angry neutron stars cool down
Neutron stars are like the most efficient thermoses in the universe, filled with hot noodle soup. Here’s how, over the course of millions of years, they cool down. Source: https://www.livescience.com/neutron-star-pasta-neutrinos.html