A Black Hole "Burps" Out an "Eaten" Star's Matter!

Discussion in 'Science and Nature' started by Storm Crow, Oct 13, 2022.

  1. #1 Storm Crow, Oct 13, 2022
    Last edited: Oct 13, 2022
    This was kind of mind-blowing! A black hole with "indigestion"!

    ‘We’ve Never Seen Anything Like This Before:’ Black Hole Spews Out Material Years After Shredding Star
    ‘We’ve Never Seen Anything Like This Before:’ Black Hole Spews Out Material Years After Shredding Star | Center for Astrophysics


    Credit: DESY, Science Communication Lab
    Cambridge, MA– In October 2018, a small star was ripped to shreds when it wandered too close to a black hole in a galaxy located 665 million light years away from Earth. Though it may sound thrilling, the event did not come as a surprise to astronomers who occasionally witness these violent incidents while scanning the night sky.

    But nearly three years after the massacre, the same black hole is lighting up the skies again — and it hasn’t swallowed anything new, scientists say.

    “This caught us completely by surprise — no one has ever seen anything like this before,” says Yvette Cendes, a research associate at the Center for Astrophysics | Harvard & Smithsonian (CfA) and lead author of a new study analyzing the phenomenon.

    The team concludes that the black hole is now ejecting material traveling at half of the speed of light, but are unsure why the outflow was delayed by several years. The results, described this week in the Astrophysical Journal, may help scientists better understand black holes’ feeding behavior, which Cendes likens to “burping” after a meal.

    The team spotted the unusual outburst while revisiting tidal disruption events (TDEs) — when encroaching stars are spaghettified by black holes — that occurred over the last several years.

    Radio data from the Very Large Array (VLA) in New Mexico showed that the black hole had mysteriously reanimated in June 2021. Cendes and the team rushed to examine the event more closely.

    “We applied for Director’s Discretionary Time on multiple telescopes, which is when you find something so unexpected, you can’t wait for the normal cycle of telescope proposals to observe it,” Cendes explains. “All the applications were immediately accepted.” (snipped)

    So black holes are not necessarily a one way trip! Which brings up interesting speculations in my mind about black hole-related time distortions.... and could "small" things like planets be "swallowed" whole and burped up "like a sesame seed after a Chinese dinner"?

    Told my sons about this article, and a bit later, my eldest son returned the courtesy by telling me about this one woman who can smell Parkinson's disease even before the symptoms. Scientists confirmed her gift, and it has set them off looking for the compound that causes the "Parkinson's smell". This could be a real game-changer in diagnosing Parkinson's. Once they ID the compound (likely in sweat), diagnosing pre-symptomatic Parkinson's will be able to be done with an "electric nose", or perhaps trained dogs (like those trained to sniff for drugs or epileptic seizures). And now I want to read about this, so Bye! :bolt:


    Found an article on it-
    Her Incredible Sense Of Smell Is Helping Scientists Find New Ways To Diagnose Disease
    Her Incredible Sense Of Smell Is Helping Scientists Find New Ways To Diagnose Disease
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  2. Fascinating! I doubt the "smoke" looking stuff being ejected from the black hole's poles actually look like that. That's how smoke or steam looks when it's in an atmosphere, in zero gravity with no atmospheric gasses to interfere I bet it looks completely different, more like the polar jets we usually see associated with black holes.

    The bit about the lady smelling Alzheimer's was also very interesting. There's a couple of outfits who are training dogs to detect Alzheimer's and they apparently have a 90% success rate.
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  3. I remember seeing a clip years ago about dogs trained to sniff out certain types of cancer. Could ID cancer before any noticeable signs. A member of the film crew was sniffed as a demonstration, and the dog alerted to a single freckle that was indistinguishable from thousands of others. It was tested and was in fact cancer. Blew my mind at the time.
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  4. It's cool to read about these giants!

    I recently read that there is a blackhole that is 11 times the diameter of our solar system. Mind boggling.
    Some are even larger.
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