Black hole mystery

Sky at Night Magazine - - EYE ON THE SKY -

HUB­BLE SPACE TE­LE­SCOPE, 9 JAN­UARY 2017

Like most known spi­ral gal­ax­ies, there is a su­per­mas­sive black hole at the cen­tre of RX J1140.1+0307. How­ever, this par­tic­u­lar spec­i­men has one of the low­est black hole masses of any with a lu­mi­nous galac­tic core. The bright­ness of the galac­tic cen­tre is greater than can be ex­plained by the mass of the black hole alone, lead­ing as­tronomers to con­clude there must be other, un­known forces at work.

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