Intermediate black holes can bring stars back to life
A new study reveals that medium-sized black holes are able to briefly reignite dead stars.
By Joseph Scalise | 1 hour ago
If a dead star passes close to a medium-sized black hole it can come back to life for a brief moment, according to a new study published on the preprint siteArxiv.org and accepted for publication inThe Astrophysical Journal.
This finding comes from a group of international astronomers, who performed a series of computer simulations that revealed what happens when a burned-out stellar corpse -- also called a white dwarf -- moves by an intermediate-mass black hole.
After analyzing the data, researchers found that the hole's strong gravity can stretch and distort the dwarf in such a way that the elements inside its core reignite for a few seconds.
Those so-called "tidal disruption events" can also create gravitational waves that, while not detectable by current technology, could be picked up for study in the future.
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