www射-国产免费一级-欧美福利-亚洲成人福利-成人一区在线观看-亚州成人

USEUROPEAFRICAASIA 中文雙語Fran?ais
China
Home / China / Innovation

China's space telescope to see why black holes get 'angry'

Xinhua | Updated: 2017-05-26 09:19

BEIJING -- Black holes in space remain a mystery. One of their many secrets is why they get "angry". China will soon launch a space telescope in a bid to find out.

The Hard X-ray Modulation Telescope (HXMT), developed by Chinese scientists, will observe the black holes and neutron stars.

"Black holes will be the focus of our observation since they are very interesting, and can generate various types of radiation, including X-rays and high energy cosmic rays, as well as strong jets," says Zhang Shuangnan, the lead scientist of HXMT and director of the Key Laboratory of Particle Astrophysics at the Chinese Academy of Sciences (CAS).

Scientists are curious about what the black holes are doing. So far about 20 black holes have been found in our galaxy. "We hope our telescope can discover more black holes. We also hope to better observe the black holes already discovered," says Zhang.

A black hole is a region of spacetime showing such strong gravitational effects that nothing - not even particles and electromagnetic radiation such as light - can escape from inside it.

There are two kinds of these "space monsters": black holes of stellar mass and supermassive black holes. Black holes of stellar mass are thought to form when massive stars collapse at the end of their lifecycle.

After a black hole forms, it can continue to grow by absorbing mass from its surroundings. Some scientists believe that by absorbing gas and other stars and merging with other black holes supermassive black holes of millions of solar masses may form. There is general consensus that supermassive black holes exist in the centers of most galaxies.

Black holes are key to understanding the origins of time and nature of space and the ultimate destiny of the universe, scientists say.

Despite its invisible interior, the presence of a black hole can be inferred through its interaction with other matter and with electromagnetic radiation.

Matter that falls into a black hole can form an external accretion disk heated by friction, forming some of the brightest objects in the universe.

The first black hole was discovered in 1972. Named Cygnus X-1, it is about 6,000 light-years from Earth and is a strong X-ray source.

"If a black hole does nothing, it cannot be found. But if matter falls into a black hole, it is accelerated and heated during the process, emitting X-rays. Scientists may get to understand the characteristics of black holes through the X-rays," Zhang says.

Some times a black hole is calm, but other times it's very "bad tempered." When a black hole gets "angry", it generates very strong X-rays or gamma ray bursts or jet-flows, Zhang says.

Other countries have sent about a dozen X-ray satellites into orbit, but most are suitable for observing only relatively calm black holes. However, HXMT is suitable for observing angry black holes and neutron stars, Zhang explains.

"We will scan the galaxy to track the 'tempers' of black holes. We are still not clear why some black holes suddenly get angry, since we haven't observed them for long enough," says Zhang. "We plan to make a thorough survey of the black holes and neutron stars in the galaxy."

Xiong Shaolin, a young scientist at the Institute of High Energy Physics of CAS, says the research will push forward the development of astronomy. "We hope to take X-ray photos of black holes in the future."

Editor's picks
Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
 
主站蜘蛛池模板: 在线免费一级片 | 欧美日韩在线永久免费播放 | 亚洲国产精品一区二区九九 | 亚洲久草视频 | 日本久久久久久久久久 | 亚洲图片偷拍自拍 | 美女被拍拍拍拍拍拍拍拍 | 免费欧美黄色 | 99精品视频在线 | 狠狠色噜噜狠狠狠米奇9999 | 日韩中文字幕免费在线观看 | 久久久久久综合一区中文字幕 | 中文字幕在线观看不卡视频 | 国产高清一区二区三区视频 | 国产高清a毛片在线看 | 寡妇一级毛片 | 亚洲精品456在线播放无广告 | 国产v欧美v日韩在线观看 | a级毛片免费高清毛片视频 a级毛片免费高清视频 | 欧美一级毛片免费播放aa | 国内自拍亚洲 | 国产精品欧美激情在线播放 | 亚洲国产成人久久一区www | 日韩激情无码免费毛片 | 美国一级做a一级视频 | 九九九九热精品免费视频 | 欧美成人se01短视频在线看 | 国产在线精品一区二区三区不卡 | 国产亚洲精品国看不卡 | 国产午夜精品久久久久九九 | 美女张开腿让人捅 | 国产亚洲精品免费 | 中文久草 | 欧美国产高清欧美 | 亚洲综合一二三区 | 成人午夜免费视频毛片 | 波多野结衣中文无毒不卡 | 国产精品不卡在线 | 亚洲免费在线看 | 国产高清在线精品一区a | 美女被免费网站在线软件 |