Giant Black Hole tagged posts

A Giant Black Hole Destroys a Massive Star

Earlier this year, another team of astronomers reported the “Scary Barbie” event where they estimated a star with about 14 times the mass of the sun was destroyed by a black hole. However, this has not yet been confirmed as a tidal disruption, with the estimate of the star’s mass mainly based on the brightness of the flare, not on a detailed analysis of material around the black hole as with ASASSN-14li.

Another exciting aspect of the ASASSN-14li result is what it means for future studies. Astronomers have seen moderately massive stars like ASASSN-14li’s in the star cluster that contains the supermassive black hole in the center of our galaxy...

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A Giant Black Hole keeps Evading Detection and scientists can’t explain it

This composite image of the galaxy cluster Abell 2261 contains optical data from NASA's Hubble Space Telescope and Japan's Subaru Telescope showing galaxies in the cluster and in the background, and data from NASA's Chandra X-ray Observatory showing hot gas (colored pink) pervading the cluster. The middle of the image shows the large elliptical galaxy in the center of the cluster.
This composite image of the galaxy cluster Abell 2261 contains optical data from NASA’s Hubble Space Telescope and Japan’s Subaru Telescope showing galaxies in the cluster and in the background, and data from NASA’s Chandra X-ray Observatory showing hot gas (colored pink) pervading the cluster. The middle of the image shows the large elliptical galaxy in the center of the cluster.
(Image: © X-ray: NASA/CXC/Univ of Michigan/K. Gültekin; Optical: NASA/STScI/NAOJ/Subaru; Infrared: NSF/NOAO/KPNO)

An enormous black hole keeps slipping through astronomers’ nets. Supermassive black holes are thought to lurk at the hearts of most, if not all, galaxies...

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