NGC 1128 is a dumbbell galaxy in the

Abell 400 Abell 400 is a galaxy cluster which contains the galaxy NGC 1128 with two supermassive black holes (3C 75) spiraling towards merger. These two supermassive black holes are contained in NGC 1128. The galaxy, microwave radio jets, multi-million ...

galaxy cluster A galaxy cluster, or a cluster of galaxies, is a structure that consists of anywhere from hundreds to thousands of galaxies that are bound together by gravity, with typical masses ranging from 1014 to 1015 solar masses. They are the second-l ...

. At the center of the galaxy is 3C 75, a radio source, and contains two orbiting

supermassive black hole A supermassive black hole (SMBH or sometimes SBH) is the largest type of black hole, with its mass being on the order of hundreds of thousands, or millions to billions of times the mass of the Sun (). Black holes are a class of astronomical obj ...

s that may be merging. Computer simulations indicate that these two black holes will gradually spiral in toward each other until they merge.

Lewis Swift Lewis A. Swift (February 29, 1820 – January 5, 1913) was an American astronomer who discovered 13 comets and 1,248 previously uncatalogued nebulae. Only William Herschel discovered more nebulae visually. Discoveries Swift discovered or co-discov ...

is credited with the discovery of NGC 1128 in 1886. NGC1128 - SDSS DR14

References

External links

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Black Holes Dance With Incredible Violence
(SpaceDaily) 12 April 2006
3C 75 in Abell 400: Black Holes Determined to be Bound
(Chandra AXAF)

(Chandra AXAF) *
NGC 1128
(jpeg, Chandra AXAF) * {{DEFAULTSORT:NGC 1128 Interacting galaxies Radio galaxies Elliptical galaxies Abell 400 1128 11188 Cetus (constellation)