July 5th, 2024

Fresh wind blows from supernova recorded in 1181

Researchers solved the mystery of SN 1181, a rare supernova from historical records. Two white dwarfs collided, forming a visible "guest star" for 180 days. High-speed winds from the remnant challenge conventional understanding. Interdisciplinary research combines history and astronomy, offering new insights.

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Fresh wind blows from supernova recorded in 1181

A team of researchers has unraveled the mystery behind a rare supernova event recorded in historical documents from 1181. The supernova, labeled SN 1181, was created when two white dwarf stars collided, forming a temporary "guest star" that was visible for about 180 days before dimming. Through computer modeling and observational analysis, the researchers recreated the structure of the remnant white dwarf and discovered that high-speed stellar winds may have started blowing from its surface within the past 20-30 years. This finding sheds light on the diversity of supernova explosions and showcases the benefits of interdisciplinary research combining history with modern astronomy. The study challenges conventional understanding as the white dwarf left behind after the collision was expected to explode, but instead, it started generating stellar winds. The team plans to further observe the supernova remnant using radio telescopes to validate their findings. This research highlights the value of combining archaeological perspectives with modern astronomy to gain new insights into astronomical phenomena.

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Link Icon 2 comments
By @chasil - 3 months
How can a remnant star be produced when the combined mass exceeds the Chandrasakar limit?

It seems from the wiki that there is no actual collision. This seems to be something between a nova and a supernova.

https://en.m.wikipedia.org/wiki/Type_Iax_supernova

By @ck2 - 3 months
I don't know how this would be done but I've often wished there was

space .ycombinator .com

(or spacetime .ycombinator .com)

Since there's no tagging, maybe a specially crafted search result

ie. (NASA, JAXA, IRSO, moon, satellite, space, telescope, hubble, voyager, supernova, etc.)