First Future Type 1a Supernova Detected 546c38 White Dwarf Pair to Collide in 23 Billion Years

A nearby white dwarf pair will eventually merge and explode as a Type 1a supernova, astronomers confirm. 586u

Written by Gadgets 360 Staff | Updated: 8 April 2025 20:58 IST

Photo Credit: University of Warwick/Mark Garlick 3e2p1r

First Future Type 1a Supernova Detected: White Dwarf Pair to Collide in 23 Billion Years

Highlights

White dwarf pair likely to become Type 1a supernova
Stars orbit each other in 14 hours, tightening over time
Supernova will aid cosmic distance measurements

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Two pair of compact astronomers. The two stars are orbiting each other. They are believed to be on course to eventually merge together. The collision is expected to take place in roughly 23 billion years. A Type 1a supernova is likely to result from this merger. This is the first time such a system which is destined to follow this path, has been clearly observed near our region of the galaxy.

First direct evidence linked to future Type 1a supernova 2x503c

According to a University of Warwick using data from large optical telescopes.

Closer orbit to drive merger over time 1n4l1m

James Munday, PhD researcher and lead author of the study, shared in a press statement released to Space.com that the team acted quickly to the compactness of the system. Measurements revealed the stars currently orbit each other in just over 14 hours. Over time, the orbit is predicted to reduce to less than a minute. At that point, the final stages before the explosion will be reached.

T Corona Borealis May Erupt Soon: Rare Nova Could Be Visible to Naked Eye

Wider impact on cosmic measurements 585t2b

Dr Ingrid Pelisoli. Assistant Professor at the University of Warwick and co-author, stated to Space.com that the proximity of this system suggests similar pairs might not be uncommon. Type 1a supernovas are considered useful to astronomers. Their consistent brightness allows measurements of vast distances in space.

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