国产精品99一区二区三_免费中文日韩_国产在线精品一区二区_日本成人手机在线

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
主站蜘蛛池模板: 长岭县| 绥中县| 长白| 环江| 阜新市| 绥芬河市| 龙海市| 小金县| 太和县| 射洪县| 清徐县| 澎湖县| 怀安县| 民权县| 全州县| 晋宁县| 五台县| 大竹县| 荔浦县| 丹江口市| 白沙| 盈江县| 同心县| 赞皇县| 灵台县| 平利县| 仁怀市| 江油市| 云安县| 高青县| 霸州市| 陵水| 上蔡县| 喀喇| 闽侯县| 尼勒克县| 湖南省| 通辽市| 平原县| 公主岭市| 临漳县|