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SUMMARY:Supernova neutrino distribution: data and their approximation appr
 oach
DTSTART;VALUE=DATE-TIME:20241022T140500Z
DTEND;VALUE=DATE-TIME:20241022T160000Z
DTSTAMP;VALUE=DATE-TIME:20260819T055401Z
UID:indico-contribution-4108@cern.ch
DESCRIPTION:Speakers: Eugenia Koptyaeva ()\nTo obtain the neutrino paramet
 ers in core-collapse supernova we use the results of a one-dimensional sim
 ulation of neutrino propagation\, performed self-consistently with hydrody
 namics in Prometheus-Vertex code. As in most modern model of neutrino prop
 agation in supernova\, in this numerical code the moments approach is appl
 ied for calculation of neutrino transport. This method is based on the sep
 aration of neutrino energy range to bins and allows to get us only the int
 egral value of neutrino specific intensity in them. In this case\, the sim
 plest way to find the neutrino radiation parameters is to use total integr
 al energy moments. But this approach does not allow to obtain neutrino rad
 iation parameters for some analytical models\, for example\, for a popular
  Fermi-like approximation of the neutrino energy spectrum. Because of that
 \, we use method based on the minimization of the functional\, which deter
 minates the deviation of integral value of the model spectrum from the dat
 a performed with Prometheus-Vertex code. This approach of finding of neutr
 ino radiation parameters allows us to more accurately approximate the data
 \, and it can be used in case when the approach of energy moments are not 
 applicable.\n\nhttps://indico.particle.mephi.ru/event/436/contributions/41
 08/
LOCATION: Alexeevskiy hall
URL:https://indico.particle.mephi.ru/event/436/contributions/4108/
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