The following is a Recent studySubmitted to High Energy Astrophysical PhenomenaA group of Japanese researchers discuss strategies to predict and observe precursor signatures for an explosive from Local Type II or Galactic supernovae (SNe)
This study could help us to better understand how and when supernovae might occur in the universe. Supernovae are the plural form for supernova (SN).
However, how important is it that supernovae are detected before they happen?
Daichi Tusuna, an astrophysicist from the Research Center for the Early Universe at the University of Tokyo and the lead author of the study, stated that “it is important from my perspective in two aspects.”
First, although we know supernovae (SNe), are explosions that signal the death of massive star, it is still a mystery what happens at the end of the star’s life. Recent observations have shown that SN precursors cannot be predicted using the standard theory of stellar development.
“Our paper asserts that future observations can be used to probe the precursor in detail. This will allow us to improve our understanding of stellar development and refine our theory. A second advantage of finding a SN precursor is that it would give us a very early warning of a near future SN and extend the time frame for multi-messenger coordination (light). neutrinosAnd Gravitational waves) observations.”
The open-source code was used by the researchers for the study. CHIPS (Complete History of Interaction-Powered Supernovae).This is a model to describe a hypothetical discharge from a supergiant star’s mass explosion.
This is interesting, considering the star Betelguese was born in 2019. It was observed that brightness dimmed.This led to speculations about the possibility of it going supernovae.
Betelguese is close to the end of its lifespan, as it turns out. Study of 2021According to them, the explosion is unlikely to occur for another 100,000 years. But what could this research mean for Betelguese
” BetelgeuseTsuna stated that it is a supergiant in red, which is the exact type of star we have studied. “Thus, if Betelgeuse explodes very soon, it could exhibit this kind of precursor emission right just before the SN. Betelgeuse is very near to us. neutrinoDetectors might detect neutrinos emitted even before the SN. Multi-messenger astronomy can be done even before the SN blast!
According to the study, eruption light curves that are fueled by a short shockwave pulse last only for a few days before being followed by a much longer cooling discharge lasting for hundreds of years.
Lower energy eruptions are followed by a short peak period, fueled in part by what is known as the bound envelope or pulling back.
According to the study, such mass eruptions can be used as an early warning system for a near future SN. This will prove useful in multi-messenger studies on core-collapse SNe.
Tsuna said, “One thing I would like to stress is that there is a bright future for detection of these kinds of rather dim precursors.”
“For instance, the Rubin Observatory will conduct wide-field survey observations in a few years at sensitivity far deeper than current surveys. This instrument would detect these types of emission and could be used to probe the extraordinary end stages of a huge star’s life.
This article was originally published in Universe Today. Learn more Original article.
