Temporary star from historical documents recreated using new computer model
A rare supernova event from 1181, SN 1181, explained by a new computer model revealing a collision of white dwarf stars. The study highlights diverse supernova explosions and interdisciplinary research combining history with modern astronomy.
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A rare supernova event recorded in historical documents from 1181, known as SN 1181, has been explained through a new computer model. Researchers discovered that two white dwarf stars collided, creating a temporary "guest star" visible for about 180 days. By pinpointing the location of the remnant in 2021, scientists recreated its structure using computer modeling and observational analysis. The study, published in The Astrophysical Journal, sheds light on the diversity of supernova explosions and the importance of interdisciplinary research combining history with modern astronomy. The team found that the remnant, SNR 1181, consists of two shock regions and may have started emitting high-speed stellar winds within the past 20–30 years. This unexpected finding challenges conventional understanding and suggests the white dwarf may have reignited due to matter falling back onto its surface. Further observations using telescopes like the Very Large Array and Subaru Telescope are planned to validate the computer model and explore this intriguing astronomical phenomenon.
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The James Webb Space Telescope observed galaxy J1120+0641, revealing a mature quasar with a billion solar mass black hole at cosmic dawn. This challenges theories on black hole growth, suggesting they may start with substantial masses. The study sheds light on early black hole development, showing unexpected normalcy in early quasars, challenging assumptions on their evolution.
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