Science, Space and Technology News 2024
Supernova 1181, resulting from the dramatic collision of two white dwarfs, has been studied through a blend of historical documentation and cutting-edge astronomy. The remnants, now identified in the Cassiopeia constellation, reveal a complex structure with signs of recent reignition, offering a unique perspective on the behavior of supernova remnants and their potential to reactivate. Credit: SciTechDaily.
A supernova remnant from 1181, resulting from two colliding white dwarfs, was analyzed using historical records and modern astronomy. The discovery in the constellation Cassiopeia reveals a complex structure with new stellar winds, possibly indicating a reignition of the remnant star. This interdisciplinary approach provides deeper insights into the dynamics of stellar phenomena.stars merging and creating a Type Ia supernova.
These images show the two shock regions of the remnant SNR 1181. The bright white at the center is the white dwarf. Credit: 2024 T. Ko, H. Suzuki, K. Kashiyama et al./ The Astrophysical JournalIt is the year 1181 and in Japan the Genpei War has recently begun. It will lead to a shift in political power from aristocratic families to the new military-based shogunate, which will establish itself in the coastal city of Kamakura near modern-day Tokyo.
“If the wind had started blowing immediately after SNR 1181’s formation, we couldn’t reproduce the observed size of the inner shock region,” said Ko. “However, by treating the wind’s onset time as variable, we succeeded in explaining all of the observed features of SNR 1181 accurately and unraveling the mysterious properties of this high-speed wind. We were also able to simultaneously track the time evolution of each shock region, using numerical calculations.
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