A team of astronomers at The Ohio State University watched a star disappear and possibly become a black hole. Instead of becoming a black hole through the expected process of a supernova, the black hole candidate formed through a "failed supernova."
The team used NASA's Hubble and Spitzer Space Telescopes and the Large Binocular Telescope to observe and monitor the star throughout the past …
This is only the second attempt, after M33, to useresolved stellar kinematics to search for a nuclear black hole with massbelow 106 solar masses.
We are unable to identify a best-fitvalue of MBH in NGC 205; however, the data impose a upperlimit of 2.2×104 Msolar (1 σconfidence) and an upper limit of 3.8×104Msolar (3 σ confidence). NASA bombshell: Agency deliver shock blackhole warning as freak flashes seen in deep space ... one being that it may be a black hole consuming another object. News Space telescopes find “twins” of Eta Carinae in other galaxies 6 January 2016 Astronomy Now. We present evidence, based on Chandra ACIS-S observations of the nearby spiral galaxy NGC 6946, that the extraordinary X-ray luminosity of the MF 16 supernova remnant actually arises in a black hole X-ray binary. NGC 3718 is interacting with its cloes barred spiral companion NGC 3729 (below center). The distance, supernova rate, and supernova progenitors of NGC 6946, Monthly Notices of the Royal Astronomical Society: Letters, Volume 485, Issue 1, May 2019, ... and the possible black hole forming event N6946-BH1. [ 8 May 2020 ] Astronomers find closest black hole yet in ‘nearby’ star system News [ 5 May 2020 ] SpaceX to ... NGC 6946. The obvious Hickson Group 56A (Arp 322) at the top right corner of the image is located in approximately 425 million light years distance and consists of five main galaxies, identified as follows: PGC 35609, PGC 35615, the interacting pair PGC 35618 and UGC 6527, MGC 9-19-113. Collapsing Star Gives Birth to a Black Hole.
Among the galaxies they've been watching is NGC 6946, a spiral galaxy 22 million light-years away that is nicknamed the "Fireworks Galaxy" because supernovae frequently happen there -- indeed, SN 2017eaw, discovered on May 14th, is shining near maximum brightness now. The distance to the fireworks galaxy NGC 6946 is highly uncertain. But scientists have found a star that defied normalcy and instead just fizzled and faded before collapsing quietly into a black hole.
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