A star completely torn apart when it ventured too close to a black hole has given science a rare gift. For the first time, scientists have detected a high-energy neutrino that was flung out into space during one of these violent events.
Researchers reveal important clues to understand the death of massive stars
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They found that all three species of the neutrinos from the supernovae are important contrary to the common treatments with only two flavors. The results of this crucial work have been recently published in the journal, Physical Review Letters (PRL), and has garnered worldwide attention from the astrophysics community.
This becomes possible as new supernova simulations show the presence of muons in the supernovae and in turn produce asymmetry between muon neutrinos and antineutrinos, taken to be zero otherwise, implying three flavor effects.
GUWAHATI: Researchers from the Indian Institute of Technology Guwahati, in collaboration with researchers from Max Planck Institute for Physics, Munich, Germany, and Northwestern University, USA, have revealed important clues to understand the death of massive stars and have also revealed the problems with the existing models.
Study finds how and why stars die
By studying all three flavours involved in a supernova, the researchers have unlocked more clues as to how and why stars die.
Chicago: Researchers from the Northwestern University (NU) has found that by studying all three flavours involved in a supernova, they have unlocked more clues as to how and why stars die.
Contrary to the past practice of simplifying studies by studying one flavour while ignoring the other two, the researchers in the new study created a non-linear simulation of a fast conversion when three neutrino flavours are present, where a fast conversion is marked by neutrinos interacting and changing flavours.
their monk the most common elementary particles and a source of fascination for scientists in the antarctic an entire observatory has been built to detect these mysterious objects. in 2015 to physicists shared the nobel prize for demonstrating that neutrinos have most but how much mass to find out researchers have developed the world s most precise scale. tree knows are born during nuclear fusion in the sun countless numbers of solar neutrinos arrive on earth every 2nd and that s just one source of these mysterious particles they re so puny that until recently scientists believed they had no mass at all. today we know that the subatomic particles do have a mass an extremely small one physicist magnus slusser is involved in experiments to pin it down they ve already yielded initial results. yet so these measurements allowed us to read. arrow down the estimated mass slightly the upper limit was
can signal by through every big centimeter of the universe still has about 300 neutrinos left over from the big bad with the use of other sources like the sun and supernovas all those also produce huge amounts. of lots of new tracers arrive on earth and pass right through our bodies due to these lesser weakly interactively but we don t even notice them not feel familiar there s gas or to every square centimeter of our skin and every 2nd of that is that we don t even notice. weighing neutrinos it s very complicated and requires some clever tricks catch me in measure some 70 meters long. at one end of the device the scientists put tritium a radioactive isotope of hydrogen. the base of decay of the radioactive tritium nuclei produces an electron and a neutrino to 2 particles share the decay energy which is a known quantity and that allows the researchers to deter. in the neutrinos mass