无码少妇一区二区三区免费,妓院一钑片免看黄大片,国语自产视频在线,亚洲AV成人无码国产一区二区,激情久久综合精品久久人妻,日韩免费毛片,综合成人亚洲网友偷自拍,国内自拍视频在线观看,欧美熟妇性xxxx交潮喷,国产成人精品一区二免费网站

Astronomers find rare star system may produce gamma-ray burst: Aussie research

Source: Xinhua| 2018-11-20 11:40:51|Editor: Li Xia
Video PlayerClose

SYDNEY, Nov. 20 (Xinhua) -- Astronomers from the University of Sydney have identified a "nearby" star system as having the potential to produce a gamma-ray burst, one of the most energetic events in the universe, second only to the big bang.

According to a research published on Tuesday, Aussie scientists along with international colleagues revealed that they have located the rare system just 8,000 light years from earth, the first of its type to be found in our galaxy.

"We knew immediately that we have found something quite exceptional, the luminosity across the spectrum from the radio to the infrared was off the charts," lead author Dr. Joe Callingham from the Netherlands Institute for Radio Astronomy said.

The system was nicknamed Apep. Two of Apep's stars are of the Wolf-Rayet variety meaning they are massive and reaching the end of their life.

Those stars could explode into supernovae at any time, and could result in a cataclysmic gamma-ray event combining with the system's extreme conditions.

"The rapid rotation puts Apep into a whole new class," study co-author Dr. Benjamin Pope from New York University said.

"Normal supernovae are already extreme events but adding rotation to the mix can really throw gasoline on the fire," Benjamin said.

Scientists said that a gamma-ray burst from one of Apep's stars would have the capacity to strip the earth of its Ozone layer, while it appears not to be aimed at us at the moment.

"Ultimately, we can't be certain what the future has in store for Apep," research group leader Professor Tuthillat from University of Sydney said.

"The system might slow down enough so it explodes as a normal supernova rather than a gamma-ray burst. However, in the meantime, it is providing astronomers a ringside seat into beautiful and dangerous physics that we have not seen before in our galaxy," the group leader said.

TOP STORIES
EDITOR’S CHOICE
MOST VIEWED
EXPLORE XINHUANET
010020070750000000000000011100001376192741
国产欧美一区二区日本加勒比 | 国产愉拍91九色国产愉拍| 亚洲an日韩专区在线| 性色av无码中文av有码vr| 护士av无码在线观看| 国产成熟人妻换╳╳╳╳| 国产极品高颜值美女在线| 精品久久精品午夜精品久久| 亚洲欧美中文字幕日韩一区二区| 亚洲av成人精品一区二区三区| 果冻传媒2021精品一区| 日本岛国视频一区二区三区| 被三个室友狂躁到早上男男| 久久精品| 熟女国产精品一区二区三| 亚洲欧洲日本天天堂在线观看| 亚洲一区毛片| 成人污视频| 国产 另类 在线 欧美日韩| 门国产乱子视频观看| 亚洲国产超清无码专区| 色婷婷狠狠97成为人免费| 日本视频精品一区二区| 99久久99久久精品免费看蜜桃| 国产av一区二区久久蜜臀| 乱人伦中文无码视频| 欧美精品影院| 国产成人无码A区在线观看视频| 国产黄色一区二区三区四区| 中文人妻无码一区二区三区信息| 久久好在线视频| 好男人资源在线影院免费观看 | 久久中文字幕无码不卡一二区| 乱人伦中文无码视频| 日本一区二区三深夜不卡| 国产精成人品日日拍夜夜免费| 在线无码精品秘 在线观看| 国产韩国精品一区二区三区久久| 精品国产欧美一区二区| 亚洲中文字幕伊人久久无码| 国产免费一区二区三区视频在线|