Scientists discover extremely massive black hole

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RESTRICTIONS: Broadcast: NO USE JAPAN, NO USE TAIWAN Digital: NO USE JAPAN, NO USE TAIWAN
Researchers have discovered a massive black hole 15,000 light years from Earth in the Milky Way Galaxy.

Professor Liu Jinfeng at the Chinese Academy of Sciences said in a press release that the stellar black hole named LB-1 is so large that, "it should not even exist in our galaxy."

According to the international research team, the "monster black hole" has a mass that is 70 times greater than the mass of the sun.

The discovery comes as a surprise as scientists had previously estimated the mass of most stellar black holes in our galaxy at less than 20 times the sun's mass.

Scientists spotted LB-1 by looking for stars that circle a black hole. LB-1's companion has eight times the mass of the sun and circles the black hole every 79 days.

The international team credits China's Large Sky Area Multi-Object Fiber Spectroscopic Telescope for making the discovery.

The Gran Telescopio Canarias in Spain and the Keck I telescope in the U.S. then determined the physical parameters of LB-1 and its companion star.

RUNDOWN SHOWS:
1.The LB-1 black hole's general position
2. LB-1's mass compared to estimated mass of other Milky Way black holes
3. The companion star of the black hole
4. Observatories that took part in the discovery and study of LB-1

VOICEOVER (in English):
"Researchers have discovered a massive black hole 15,000 light years from Earth in the Milky Way Galaxy."

"Professor Liu Jinfeng at the Chinese Academy of Sciences said in a press release that the stellar black hole named LB-1 is so large that, 'it should not even exist in our galaxy.'"

"According to the international research team, the 'monster black hole' has a mass that is 70 times greater than the mass of the sun."

"The discovery comes as a surprise as scientists had previously estimated the mass of most stellar black holes in our galaxy at less than 20 times the sun's mass."

"Scientists spotted LB-1 by looking for stars that circle a black hole. LB-1's companion has eight times the mass of the sun and circles the black hole every 79 days."

"The international team credits China's Large Sky Area Multi-Object Fiber Spectroscopic Telescope for making the discovery."

"The Gran Telescopio Canarias in Spain and the Keck I telescope in the U.S. then determined the physical parameters of LB-1 and its companion star."


SOURCES: Chinese Academy of Sciences (EurekAlert)
https://eurekalert.org/pub_releases/2019-11/caos-cao112519.php