A examine has introduced consideration to the nebula often known as Pa 30. This Nebula was shaped after a supernova that was seen from Earth in 1181. On the heart of this nebula is a white dwarf, sometimes called a “zombie star,” which continues to shine with spectacular warmth and light-weight lengthy after its explosive start.
The Historic Context of the Supernova
In August of 1181, observers in East Asia noticed a vibrant object close to the constellation Cassiopeia. This “visitor star” remained seen for about six months, capturing the curiosity of stargazers. Latest findings have confirmed that this occasion was a supernova, designated as SN 1181, including a wealthy layer to our understanding of historic astronomical data.
What Makes the Zombie Star Stand Out
The white dwarf on the coronary heart of Pa 30. Reasonably than being fully destroyed within the supernova, this star has survived, burning at a temperature of round 360,000 levels Fahrenheit (200,000 levels Celsius). This excessive warmth makes it one of many hottest stars recognized to science, sparking curiosity about the way it has managed to outlive such intense situations.
Superior Mapping Methods Reveal New Insights
Researchers on the Keck Observatory in Hawaii have used modern mapping methods to create an in depth animated visualisation of the nebula. This new imagery reveals lengthy, petal-like constructions extending from the star, which look just like the petals of a dandelion. The crew found that the nebula is increasing at a exceptional pace of about 2.2 million miles per hour (3.5 million kilometers per hour), sustaining this fast tempo because the preliminary explosion.
The Nebula’s Distinctive Form
One of many notable options of Pa 30 is its irregular form. Not like many different remnants, this nebula has a definite, asymmetrical construction. Ilaria Caiazzo, a co-author of the examine, famous that whereas this analysis sheds gentle on the supernova noticed centuries in the past, it additionally raises new questions for astronomers to analyze.
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