日韩精品久久一区二区三区_亚洲色图p_亚洲综合在线最大成人_国产中出在线观看_日韩免费_亚洲综合在线一区

Global EditionASIA 中文雙語Fran?ais
Europe

China's huge telescope discovers new pulsars

By Zhang Zhihao | China Daily Europe | Updated: 2017-10-13 08:48
Share
Share - WeChat

Achievement is hailed as ushering in a 'new era' of nation's space exploration

Chinese researchers have discovered six pulsars, the superheavy remnants of massive stars, using the country's Five-hundred-meter Aperture Spherical Radio Telescope, known as FAST.

It is the first time Chinese scientists have discovered pulsars using the world's largest single-dish radio telescope, thus opening a "new era of Chinese original space discovery", Yan Yun, director of the National Astronomical Observatories of China, said on Oct 10.

The first two pulsars, named J1859-01 and J1931-01, were discovered in August and were confirmed in September by the 64-meter radio telescope at Parkes Observatory in Australia.

J1859-01 is 16,000 light-years from Earth and rotates once every 1.83 seconds, while J1931-01 is 4,100 light-years away and rotates once every 0.59 seconds, according to scientists.

Since its completion in September 2016, FAST has discovered two dozen highly possible candidates for pulsars, says Li Di, the telescope's deputy chief engineer.

Last week, FAST also confirmed four new pulsars, but their details are still being analyzed.

"Pulsars are superdense cores of massive stars that went supernova and died, so they have incredible mass, extremely strong magnetic fields and they spin like a clock and shoot out strong beams of electromagnetic radiation," Li says.

"The conditions on a pulsar are far more extreme than any lab simulation on Earth. Examining them and seeing how they interact with other stars can help us tackle major scientific issues, such as the origin and evolution of the universe, finding gravitational waves and navigating spacecraft."

Li says FAST is set to be fully operational by the end of 2019. In the meantime, scientists there will continue to test FAST and cooperate with foreign scientists on space exploration.

Located in a natural depression in Guizhou province, FAST consists of 4,600 triangular panels that form a receiving dish about the size of 30 soccer fields.

Apart from its massive size, it also has unmatched accuracy and sensitivity, allowing scientists to find previously hidden stars, Li says. "When we first received the pulsar signals, you could hear their frequency signals beep like the beating of a baby's heart," he says.

Moreover, FAST is capable of surveying the night sky for multiple scientific data at once, ranging from galaxy structure to star explosions, while other telescopes can only manage one task at a time, he adds.

George Hobbs, a research scientist from the Commonwealth Scientific and Industrial Research Organization in Australia, says, "The world's most exciting radio astronomy projects are happening in China with FAST, and it is a great honor for the Australian science community to be part of the process."

Hobbs was also the leading scientist for the Parkes Pulsar Timing Array project, the telescope that confirmed China's pulsar findings. Since the discovery of pulsars in 1967, scientists have found more than 2,700 of them, more than half of which were found by Parkes Observatory, Hobbs says.

"Australia is the world leader in finding pulsars, but China will catch up really fast with FAST's help," he says. "If FAST can find a binary system in which a pulsar is orbiting a black hole, this will be a discovery worthy of a Nobel Prize."

[email protected]

(China Daily European Weekly 10/13/2017 page15)

Today's Top News

Editor's picks

Most Viewed

Top
BACK TO THE TOP
English
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: 中文字幕在线观看av | 广西美女一级毛片 | 一级一级毛片免费看 | 亚洲人成网站在线在线 | 精东视频污 | 久久久久久久久久亚洲 | 日本成日本片人免费 | 毛片免费视频 | 亚洲欧美天堂综合久久 | 欧美大胆一级视频 | 久操网址 | 欧美91精品国产自产 | 欧美亚洲国产第一页草草 | 一级欧美视频 | 色婷婷综合久久久中字幕精品久久 | 亚洲3atv精品一区二区三区 | 91短视频在线免费观看 | 国产精品久久久久久久久久久久久 | 欧美成人xxxx | 午夜激情小视频 | 99只有精品| 欧美日韩在线免费 | 色网站综合 | 羞羞视频免费网站在线看 | 欧美国产伦久久久久 | 男女配种超爽免费视频 | 日本欧美中文字幕 | 久久综合丝袜日本网 | 国产精品久久久久久搜索 | 亚洲中出| 91免费国产在线 | 色偷偷网址 | 午夜影院在线看 | 亚洲欧洲日本无在线码天堂 | 成人在线精品视频 | 欧美精品一区二区三区蜜桃视频 | 成人午夜精品一区二区三区 | 亚洲一区二区三区高清 | 国产成人精品一区在线播放 | 国产二区视频 | 日韩视频中文字幕 |