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First ever free-floating black hole found roaming through interstellar space 5nvklj





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First ever free-floating black hole found roaming through interstellar space

Dragon
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Post by Dragon Mon Feb 07, 2022 8:37 am

An international team of researchers has confirmed that a possible microlensing event witnessed in 2011 was due to the presence of a free-floating black hole roaming through interstellar space—the first of its kind ever observed.

Prior research has shown that black holes are often formed when stars reach the end of their lives and their cores collapse, generally producing a supernova.

And because many such supernova have been observed, it seemed clear that many black holes must have been created as a result.


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Post by Dragon Mon Feb 07, 2022 8:39 am

First ever free-floating black hole found roaming through interstellar space First-ever-free-floati
Credit: [You must be registered and logged in to see this link.]

HST image in the F814W (I-band) filter of an 800 ×800 region centered on MOA-11-191/OGLE-11-0462, obtained at our final epoch in 2017 August.

North is at the top, east on the left.

Encircled in green is the source star, now returned to baseline luminosity.

The site is resolved into the source, a much brighter neighboring star 0.004 to the WNW, and several nearby fainter stars.

The inner cyan circle has a diameter of 100, corresponding to the typical best seeing in ground-based microlensing survey images; the outer cyan circle’s diameter is 200, which is not unusual seeing.

The source, bright neighbor, and several fainter stars are generally blended in ground-based frames, and the blending increases with seeing.


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First ever free-floating black hole found roaming through interstellar space 334pu7m
Dragon
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Post by Dragon Mon Feb 07, 2022 8:39 am



Hubble finds a Black Hole Igniting Star Formation in a Dwarf Galaxy


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