U.S. research team confirms millisecond pulsar identified by China's FAST

    Source: Xinhua| 2018-04-28 13:28:01|Editor: Chengcheng
    Video PlayerClose

    WASHINGTON, April 27 (Xinhua) -- A separate study based on the Fermi Large Area Telescope (LAT) observations has confirmed a radio millisecond pulsar discovered by China's Five-hundred-meter Aperture Spherical radio Telescope (FAST).

    FAST, the world's largest single-dish radio telescope launched in 2016, has discovered more than 20 new pulsars so far.

    The millisecond pulsar discovery was made by FAST on Feb. 27 and confirmed by the Fermi-LAT team in reprocessing of Fermi data on April 18, which was a step closer to detecting low-frequency gravitational waves, the Chinese Academy of Sciences said Friday.

    The newly discovered pulsar, now named PSR J0318+0253, is confirmed to be isolated through timing of gamma-ray pulsations, making it the first result from the FAST-LAT collaboration outlined in a Memorandum of Understanding signed between a FAST team and an Fermi-LAT team.

    "This discovery demonstrated the great potential of FAST in pulsar searching, highlighting the vitality of the large aperture radio telescope in the new era," said Li Kejia, a scientist at the Kavli Institute for Astronomy and Astrophysics at Peking University.

    According to researchers, radio follow-up of Fermi-LAT unassociated sources is an effective way to find new pulsars.

    In a one-hour tracking observation with the FAST ultra-wide band receiver, the pulsar's radio pulses were detected with a spin period of 5.19 milliseconds, an estimated distance of about 4,000 light-years, making it potentially one of the faintest radio millisecond pulsars (MSPs).

    MSPs are a special kind of neutron stars that rotate hundreds of times per second. It can play an important role in understanding the evolution of neutron stars and the equation of state for condensed matter.

    Also, it can be used to detect low-frequency gravitational waves. The pulsar timing array (PTA) is being built to detect low-frequency gravitational waves from merging supermassive black holes using the long-term timing of a set of stable MSPs. Therefore, pulsar search is the basis of gravitational wave detection through PTAs.

    The planned Commensal Radio Astronomy FAST Survey is expected to discover many MSPs and thus will make significant contribution to the PTA experiment.

    "The international radio-astronomy community is excited about the amazing FAST telescope, already showing its power in these discoveries," said George Hobbs, a scientist of the Commonwealth Scientific and Industrial Research Organization of Australia and a member of the Gravitational Wave International Committee.

    "FAST will soon discover a large number of millisecond pulsars and I am looking forward to seeing FAST's contribution to gravitational wave detection," said Hobbs.

    TOP STORIES
    EDITOR’S CHOICE
    MOST VIEWED
    EXPLORE XINHUANET
    010020070750000000000000011100001371435971
    主站蜘蛛池模板: 波多野结衣同性| 四虎在线最新永久免费| 日韩中文字幕视频| 人人妻人人玩人人澡人人爽| 青苹果乐园在线影院免费观看完整版 | 欧美极品少妇无套实战| 四虎影永久在线高清免费| 18成禁人视频免费网站| 日本成人免费在线观看| 亚洲欧美综合区自拍另类| 老子影院午夜伦不卡亚洲| 国产特黄一级片| 99精品国产在热久久| 无码av天天av天天爽| 亚洲mv国产精品mv日本mv| 狠狠狠狼鲁欧美综合网免费| 国产99久久久久久免费看| 国产小视频91| 国内精品久久久久影院一蜜桃| 中国特级黄一级**毛片| 日韩免费视频播播| 亚洲欧美日韩网站| 精品一区二区三区在线观看视频| 国产亚洲精品无码专区| wwwxx在线| 在线中文字幕网站| 一边摸一边叫床一边爽| 日本特黄特黄刺激大片免费| 亚洲午夜国产精品无码| 渣男渣女抹胸渣男渣女软件| 台湾三级香港三级经典三在线| 黑人巨茎大战欧美白妇| 国产美女主播一级成人毛片| www320999com| 把极品白丝班长啪到腿软| 久久精品麻豆日日躁夜夜躁 | 中文字幕手机在线播放| 日韩高清在线免费观看| 亚洲日本一区二区三区在线| 男人肌肌捅女人肌肌视频| 噜噜影院在线视频在线观看|