From NASA Science · · 50s
Supernova Remnant Pa 30
A 1181 supernova remnant observed 845 years later reveals a mysterious Type Iax explosion.
In brief
A 1181 supernova remnant observed 845 years later reveals a mysterious Type Iax explosion. Astronomers studied a 1181 supernova remnant to understand a rare Type Iax explosion caused by white dwarf merger. Originally reported by NASA Science.
Supernova Remnant Pa 30
This image shows Nebula Pa 30 observed with the Gemini North Telescope in Hawai'i.
“Happy New Year! No, wait, this is not a fireworks display.”
Historical Record
Chinese, Japanese and Arabic astronomers recorded a 'guest star' that appeared for 185 days in 1181.
“separate historical records by Chinese, Japanese and Arabic astronomers tell of a 'guest star' that appeared in the sky for 185 days in the year 1181.”
Type Iax Supernova
This explosion is classified as a Type Iax supernova, likely caused by two white dwarfs merging.
“it is thought to be caused by the merger of two white dwarfs.”
Central Star
The central star is extremely hot and produces a strong wind forming radial filaments.
“the mysterious central star in the image is extremely hot and produces a strong wind, possibly forming the radial filaments.”
Pearl-like Knots
Pearl-like knots stringing the filaments are 4 light-days in diameter.
“those pearl-like knots stringing the filaments are 4 light-days in diameter.”
845-Year-Old Mystery
Understanding how this supernova created the nebula continues an 845-year-old mystery.
“understanding how a supernova created this amazing nebula continues an 845-year old mystery (and counting).”
The main idea
Astronomers studied a 1181 supernova remnant to understand a rare Type Iax explosion caused by white dwarf merger.
