US EUROPE AFRICA ASIA 中文
World / US and Canada

Astronomers find possibly biggest black hole ever

(Xinhua) Updated: 2012-11-30 10:10

HOUSTON - US astronomers have discovered what may be the most massive black hole ever known in a small galaxy about 250 million light-years from Earth, US media reported Thursday.

Astronomers find possibly biggest black hole ever

Undated composite image courtesy of NASA shows the most distant X-ray jet from a quasar named GB 1428+4217 located 12.4 billion light years from Earth. X-ray data from NASA's Chandra X-ray Observatory is shown in blue, radio data from the NSF's Very Large Array are shown in purple and optical data from NASA's Hubble Space Telescope are shown in yellow. Giant black holes at the centers of galaxies can pull in matter at a rapid rate producing the quasar phenomenon. The researchers believe the length of the jet in GB 1428 is at least 230,000 light years, or about twice the diameter of the entire Milky Way galaxy.?[Photo/Agencies]

According to observations made with the University of Texas at Austin's Hobby-Eberly Telescope, the giant black hole discovered is 11 times wider than Neptune's orbit around the sun, or about 4, 000 times larger than the black hole at the heart of the Milky Way, according to the newspaper The Houston Chronicle.

"This is a really oddball galaxy," said study team member Karl Gebhardt of the University of Texas at Austin. "It's almost all black hole. This could be the first object in a new class of galaxy-black hole systems."

The mass is so far above normal that the scientists took a year to double-check and submit their research paper for publication, according to the study's lead author, Remco van den Bosch.

Scientists now are intrigued not so much by the black hole's size, but where it lies, according to the report.

The black hole rests in the center of a disk-shaped galaxy smaller than our own Milky Way, surprising scientists who didn't figure to find something that big in a modestly sized galaxy.

The newly discovered black hole has a mass equivalent to 17 billion suns and is located inside the galaxy NGC 1277 in the constellation Perseus. It makes up about 14 percent of its host galaxy's mass, compared with the 0.1 percent a normal black hole would represent, scientists said.

"We don't understand how to make such a massive black hole in such a puny galaxy," said Karl Gebhardt, one of the University of Texas astronomers who made the discovery.

Scientists have several theories that help explain the relationship between the size of a black hole and its host galaxy.

"We do not understand yet which of these theories is best," said Remco van den Bosch.

A black hole is a region of spacetime where gravity prevents anything, including light, from escaping. Understanding the nature of black holes and their host galaxies is important because astronomers would like to better know how galaxies form and evolve.


 

Trudeau visits Sina Weibo
May gets little gasp as EU extends deadline for sufficient progress in Brexit talks
Ethiopian FM urges strengthened Ethiopia-China ties
Yemen's ex-president Saleh, relatives killed by Houthis
Most Popular
Hot Topics

...
主站蜘蛛池模板: 九色综合狠狠综合久久| 午夜视频体验区| 亚洲av无码一区二区三区不卡| 豪妇荡乳1一5白玉兰| 国产精品电影一区二区三区| xxxwww欧美性| 扒开女人双腿猛进猛出免费视频| 久久精品视频一区| 欧美又大粗又爽又黄大片视频黑人| 亚洲色偷偷色噜噜狠狠99| 精品国产三级a∨在线| 国产一级特黄生活片| 黄a大片av永久免费| 国产真实乱在线更新| 6080午夜一级毛片免费看6080夜福利| 日本japanese丰满奶水| 亚洲另类欧美日韩| 欧美精品无需播放器在线观看| 免费一级特黄特色大片在线观看| 黄色大片免费网站| 国产精品v欧美精品∨日韩| 一本色道久久88亚洲综合| 无限资源视频手机在线观看| 久久精品小视频| 欧洲97色综合成人网| 亚洲伊人久久大香线蕉结合| 欧美日韩视频在线| 可播放的欧美男男videos| 蜜桃成熟时2005| 国产偷亚洲偷欧美偷精品| 鲁大师成人一区二区三区| 在线黄视频网站| sao虎新版高清视频在线网址| 尹人久久大香找蕉综合影院| 亚洲AV无码有乱码在线观看| 欧美成人一区二区三区在线观看 | 国产精品无码素人福利不卡| 97国产精品视频观看一| 日日摸日日碰夜夜爽亚洲| 久久无码人妻一区二区三区午夜| 日韩精品无码一区二区三区不卡 |