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NGC 5548 (Seyfert Galaxy)


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NGC 5548
Seyfert Galaxy (セイファート銀河)
Supermassive Black Hole (超大質量ブラックホール)
Gx S0-a


別名 (Other names)

PGC 51074, UGC 9149, MCG 4-34-13, Mrk 1509

明るさ (Brightness)

12.3等級


星座 (Constellation)
うしかい座 (Boo) (Bootes)

距離 (Distance)
2億5,000万光年 (250 million light-years)

NGC 5548 is a seyfert galaxy located 250 million light years from the Earth in the constellation Bootes.

NGC 5548 (Seyfert Galaxy) : Picture

NGC 5548
Supermassive black hole at the heart of NGC 5548
(C) ESA/Hubble and NASA. Acknowledgement: Davide de Martin.
This is the galaxy known as NGC 5548. At its heart, though not visible here, is a supermassive black hole behaving in a strange and unexpected manner. Researchers detected a clumpy gas stream flowing quickly outwards and blocking 90 percent of the X-rays emitted by the black hole. This activity could provide insights into how supermassive black holes interact with their host galaxies.

IRAS 14156+2522, NGC 5548
IRAS 14156+2522, NGC 5548
(C) Richard Griffiths, The Johns Hopkins University and NASA/ESA
This is a Hubble Space Telescope (HST) image of a field near the galaxy NGC 5548.

IRAS 14156+2522, NGC 5548
IRAS 14156+2522, NGC 5548
(C) Richard Griffiths, The Johns Hopkins University and NASA/ESA

NGC 5548
Artist’s impression of gas filament eclipsing a black hole
(C) NASA/ESA, and A. Feild (STScI)
This artist’s impression illustrates the finding, by an international team of astronomers, of a clumpy gas stream flowing quickly outward from the supermassive black hole at the centre of active galaxy NGC 5548.

The gas filament is blocking 90 percent of the X-rays emitted by the supermassive black hole at the centre of the galaxy. This activity may provide new insights into the interaction between supermassive black holes and their host galaxies.

The arrow in the image shows the NASA/ESA Hubble Space Telescope’s line of sight.

NGC 5548 IRAS 14156+2522, NGC 5548
NGC 5548
(C) ESA/Hubble and NASA
IRAS 14156+2522, NGC 5548
(C) NASA/ESA
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