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Posts Tagged ‘black hole’

Dailywire Article-Scientists Discover Unprecedented ‘Runaway’ Black Hole

Posted by M. C. on February 25, 2023


By  Michael Whittaker

Astronomers have sighted a supermassive black hole traveling through space that appears to have been ejected from its host galaxy.

Researchers observing the dwarf galaxy designated RCP 28, roughly 7.5 billion light years away from our solar system, noticed an aberrant streak of light via the Hubble telescope. The “streak” appears to be a collection of stars being dragged out of their home galaxy by the immense gravitational force of a black hole.

The “runaway” black hole is the first of its kind to be observed, and appears to have been ejected from its original galaxy.

“We found a thin line in a Hubble image that is pointing to the center of a galaxy,” Professor Pieter van Dokkum of Yale University, the lead author of the study, said. “From a detailed analysis of the feature, we inferred that we are seeing a very massive black hole that was ejected from the galaxy, leaving a trail of gas and newly formed stars in its wake.”

The “stellar tail” in its wake is 200,000 light-years long, twice the diameter of our Milky Way galaxy.

The black hole in question is believed to be 20 million times more massive than the Sun, and it is traveling away from RCP 28 at a rate of 3.5 million miles per hour, roughly 4,500 times the speed of sound.

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Scientists devise new plan to test if mysterious ‘Planet Nine’ is primordial black hole — RT World News

Posted by M. C. on July 11, 2020

Scientists at Harvard University have developed a new method to hunt down black holes beyond our galaxy which may finally figure out what is going on with the oft-theorized but never-witnessed ‘Planet Nine.’

The method will make use of the upcoming Legacy Survey of Space and Time (LSST) mission, which is expected to begin operations in mid-2022. Using a tennis-court-sized mirror and a 3,200-megapixel camera, the researchers will seek out accretion flares, which shoot out of disrupted comets as they are stretched apart by black holes.


Space rocks pulled in by the incredible gravitational force of a black hole melt long before they reach the event horizon, owing to the heat emitted by background accretion – that is, the stretching out – of gas and other material on its doorstep. On melting, these small bodies, such as asteroids, comets and whatever other material was unfortunate to stray too close to the black hole, emit radiation bright enough to be visible against the absolute darkness – or so the boffins hope.

“Because black holes are intrinsically dark, the radiation that matter emits on its way to the mouth of the black hole is our only way to illuminate this dark environment,” explained, one of the leading scientists, Dr Avi Loeb.

Using this method, Loeb claims we can finally detect, or rule out, the planet-mass black holes on the edge of the Oort cloud, thus solving the long-standing mystery of the so-called ‘Planet Nine.’

Theories about Planet Nine range from it being an undetected or ‘missing’ planet, banished from our solar system, to it being a primordial black hole, formed soon after the Big Bang, creating disturbances on the edge of our galactic yard.

“Planet Nine is a compelling explanation for the observed clustering of some objects beyond the orbit of Neptune. If the existence of Planet Nine is confirmed through a direct electromagnetic search, it will be the first detection of a new planet in the solar system in two centuries, not counting Pluto,” said Amir Siraj, a Harvard astrophysics undergrad involved in the latest research.

One of the ideas put forth was the possibility that Planet Nine could be a grapefruit-sized black hole with a mass of five to 10 times that of the Earth.

The LSST mission will have instruments that are expected to be sensitive enough to detect radiation from beyond the Oort cloud – roughly 100,000 times the distance between the Earth and the Sun. It will reportedly boast a field of view that covers the whole sky, collecting a whopping 10 terabytes of data per night, once fully operational.

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