The spatial distribution of radioisotopes of titanium and nickel in Cassiopeio A was simulated by the Japanese Academy of Sciences.

An international joint team of researchers from Japan's Institute of Science and Chemistry has successfully recreated the spatial distribution of titanium and nickel in Cassiopeio A, the supernova debris that erupted about 340 years ago, using new computer simulations.
because this distribution can directly reflect the neutro star explosion, help to solve the "supernova explosion" mystery.
mass star with a mass more than eight times that of the sun, the center of the star was mostly made of iron after millions of years of steady evolution.
core has a mass of more than 1.5 times that of the sun, it collapses by its own gravity, forming a neutron star with a radius of about 10 kilometers.
neutrine stars in the early days of their birth had a density greater than the nucleus, and the temperature could reach 500 billion degrees Celsius, producing a large number of elementary neutrines with near-zero mass.
process that triggered the supernova explosion was an unsolzed mystery for 50 years.
the most powerful theories about the explosive structure, the idea is that a portion of the neutrinon released inside a hot neutrinon star is absorbed by the surrounding gas, which heats it up.
intense motion through the "neutrine heating" gas, just as the boiling lid of the kettle was sprayed, the intense gas "bubble" triggered the supernova explosion.
Among the hot substances released at this time, there are heavy elements such as the synthetic radioisotopes titanium 44 (proton number 22, number of middle sons 22) and nickel 56 (proton number 28, number of middle son 28), after which titanium 44 decays into a stable isotope of calcium (proton number 20) and nickel 56 decays into a stable isotope of iron (proton number 26).
decay heat causes supernovae to glow for years.
the "boiling" gas with the microns, and its shock waves spread asymmetrmetric.
, large-scale "asymmetrmetric" shock waves released by most supernova debris have been observed.
team calculated the synthesis of heavy elements such as titanium 44 and nickel 56.
the results, the stronger the impact of neutros, the greater the asymmetrmetric spatial distribution of titanium 44 and nickel 56.
because they are produced near the deepest part of the supernova, neutros, the spatial distribution most directly reflects the asymmetric nature of the explosion.
team will in the future verify more neutrino heating explosion models of young supernova debris in the hope of revealing the cause of supernova eruptions.
the results were published recently in the American Journal of Astrophysics.
(Reporter Chen Chao) Source: Science and Technology Daily.