Hybrid Neutron-Star Merger Detected for the First Time

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Hybrid Neutron-Star Merger Detected for the First Time

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Post by chris_g »


https://www.sci.news/astronomy/hybrid-n ... 11455.html
Gamma-ray bursts (GRBs) come in two varieties, long and short. Long GRBs, which last a couple of seconds to one minute, form when a star at least 10 times the mass of our Sun explodes as a supernova. Short GRBs, which last less than two seconds, occur when two compact objects, like two neutron stars or a neutron star and a black hole, collide to form a kilonova. While observing the aftermath of GRB 211211A, a long GRB event detected in 2021, two independent teams of astronomers found the surprising signs of a neutron-star merger rather than the expected signal of a supernova. This surprising result marks the first time that a kilonova has been associated with a long GRB and challenges the current understanding of these powerful explosions.
Don't you just love it when new knowledge throws kinks into what was thought to be set in stone...

Ok, enough for one day, though I will continue reading these sites. Definitely better news than what I've been reading lately.... :observer:
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