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IXPE telescope untangles theories surrounding historic supernova remnant
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Decades of hunting detects footprint of cosmic ray superaccelerators in our galaxy
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After so many years writing about astronomy, I am pleased to report that there are still things going on in the Universe that can make the hair on the back of my stand up.
Let me share a multi-part story with you about dancing dead stars, what strange beast remains after the music stops, and the sometimes explosive result.
Very explosive.
White dwarfs are the leftovers of stars like the Sun after they die. When a star like that runs out of nuclear fuel it swells up into a red giant, blows off its outer layers, and leaves behind only its intensely hot and dense core. This is the white dwarf.
| UPDATED: 15:02, Tue, Feb 9, 2021
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Supernovas come in various shapes and sizes but are widely regarded as the Universe s biggest fireworks. Astronomers originally classified these as either Type I or Type II supernovas although today we know there are many more types with their own quirks. One such classification is a Type Ia supernova, which involves a white dwarf - the hot core of a star that has shed its outer layers - being ripped apart by a runaway thermonuclear reaction caused by the star merging with or siphoning too much material from a nearby companion.