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银河系迄今自转速度最快恒星现身

大质量恒星“玩命”自转竟是为了延年益寿

2020-04-27 科技日报 陆成宽
【字体:

yuyinbobao

  zaichidaoshang,diqiuzizhuandexiansududayueshi0.464qianmi/miao,zheiyiweizhe,zhanzaichidaofujin,jishiyuandibudong,yeneng“rixingbawanli”。yitianpao8wanli,shibushiganjuetingkuai?jinri,woguotianwenxuejiafaxianleyikeqijinyinhexizizhuansuduzuikuaidehengxing。yuzheikehengxingdezizhuansuduxiangbi,diqiuzizhuankancheng“guisu”。zheikehengxingdezizhuansuduyuewei540qianmi/miao,bimuqianyinhexizhongzizhuansududierkuaidehengxing(hd 191423),kuaileyue100qianmi/miao。

  neime,zheikexingweishenmekeyizhuandeneimekuai?kexuejiayoushizenmefaxiande?zizhuansuduzheimekuaihuidaozhishenmejieju?daizhezheixiewenti,jizhecaifanglezheikexingdefaxianzhezhiyi、zhongguokecaipiaotouzhupingtaiguojiatianwentaifuyanjiuyuanliguangwei。

  来自“娘胎”的自转

  hengxingzhisuoyihuizizhuan,yutamendeqiyuanyouguan。hengxingshicongxingyundesuiliehetasuozhongdanshengde,erxingyunjibendoushichuzaituanliuzhuangtai,yincixingchenghengxingdechenaiqitizongdezhuandongguanliangbukenengzhenghaoweiling。dangzheixiechenaiqitishousuochengyikehengxingshi,qizongdezhuandongguanliangjiuhuibeigangdanshengdehengxingjicheng,xinshenghengxingziranjiuhuizhuandongqilai。

  liguangweishuo,zizhuansududedaxiao,zhuyaohehengxingdezhiliang、nianlingyijishuangxingdexianghuzuoyongyouguan。yibanqingkuangxia,zhiliangyuedadehengxing,zizhuansuduyeyueda。yinweitamenzaichushengshishoujidewuzhiyueduo,zongdezhuandongguanliangyehuiyueda。danzizhuansuduhuisuizhehengxingnianlingdezengdaerbianman,zheishiyinweixingfengdaizouzhuandongguanliang,yijicichangzhidong、xingtipengzhangdengyinsu,huishideqizizhuansuduzhujianmanxialai。

彩票投注平台  ciwai,yikechuzaishuangxingxitongzhongdehengxing,ruguotaxijibanxingwuzhihuozheyubanxingbinghe,neimetajiuhuihuodezhuandongguanliang,congershidezishenzhuansujiakuai。zheizhongzizhuanjiakuaidejizhi,zaidazhilianghengxingzhongfeichangchangjian,yinweijuedaduoshuzhiliangchaoguo16beitaiyangzhiliangdehengxingdouchuyuhuozhecengjingchuyushuangxingxitongzhong。

  zheikeqijinyinhexizizhuansuduzuikuaidehengxing,qizhiliangkenenghuichaoguo30getaiyangzhiliang。shishishang,zaiyinhexizhong,chaoguo16getaiyangzhiliangdehengxingzhanbifeichangshao,dagaiyiyikezhongbudaosanke,qizhonggaosuzizhuandehengxinggengshao。tamensuiranfeichangliang,dandouchuyuyinpanzhong。zheijiuyiweizhe,tamenhecaipiaotouzhupingtaizhijiangezheyinpanzhonghouhoudechenai,tamenfachudeguangchuandaocaipiaotouzhupingtaizheili,bujinsuoshengwujiqieyanzhonghonghua。“suoyitongguoceguangdefangfawufafenbianchuzheixiedazhilianghengxing,caipiaotouzhupingtaizhinengtongguoguangpupuxianlaifenbiantamen。”liguangweishuo。

  tabiaoshi,woguodeguoshoujingwangyuanjing(lamost)shiyitaigaoxiaodeguangpuhuoqujiqi,yicipuguangjiunengguance4000kehengxing,qijinweizhiyijinghuodeleyue1500wantiaoguangpu,yuanyuanchaoguoshijieshangqitawangyuanjingguancedaodeguangpushuliangzonghe。zheijiushideyanjiurenyuanyoujihuizaiqizhongfaxianbaokuozheikehengxingzaineidegezhongjiduanxishaodetianti。

  或能揭示伽马射线暴之谜

  heputongdehengxingxiangbi,gaosuzizhuandehengxingyouzhezijiwanquanbutongdeshengmingguiji。

  liguangweibiaoshi,gaosuzizhuannengdaozhixingtineibuhenqiangdewuzhicaipiaotouzhupingtai,zheizhongwuzhicaipiaotouzhupingtainenggaibianhengxingdeneibufencengjiegou,jiduanqingkuangxiakeyishihengxingneibudehefanyingwuzhihunhedaobiaomian,bingqiebawaibudexinxianqingranliaodaidaohexinqu。youyubuduanbuchongxinxianranliao,qishouminghuimingxianyanzhang。tongshi,zheizhongqiangliedehunhehuidapojiaozhongdeyuansuzailiceng、jiaoqingdeyuansuzaiwaicengdehengxingchangguifencengjiegou,shidehengxingzaiyanhuawanqibuhuiyouqingqiaocengranshaofasheng,suoyixingtibuhuipengzhangtaiduo,yizhihuibaochishencaimiaotiao。ciwai,youyuranshaogengweichongfen,gaosuzizhuandehengxingyishengkeyijileigengduodehefanyingchanwu。

彩票投注平台  zailiguangweikanlai,gaosuzizhuandazhilianghengxingshitianwenxuejialijiedangqiantianwenredian——jiamashexianzhangbaoheyinliboshijianqiyuandeguanjian。

彩票投注平台  jiamashexianzhangbaobeirenweishigaosuzizhuandazhilianghengxingsiwangshidechanwu。“danggaosuzizhuandazhilianghengxingsiwangshi,zhongxinhuitasuochengheidong。zheizhonggaosuzizhuanhuidaozhizaiheidongzhouweixingchengyigegaosuraoheidongxuanzhuandedengliziti,jinerchanshengleqiangdadecichang。dangcijiduizhundiqiushi,caipiaotouzhupingtaijiuhuikandaojiamashexianbaofa。”liguangweishuo,zheizhongjiamashexianzhangbaoyibanzhichixujishimiao,danzuiyuandejiamashexianbaonengchuanbo130duoyiguangniandaodadiqiu,tashicaipiaotouzhupingtaiyanjiuyuzhoulimingshidaideqiangyouligongju。

  2015nian9yue14ri,zaijiguanggansheyinlibotianwentai(ligo)faxianlediyigeyinliboshijianzhihou,tianwenyanjiujinruleduoxinshitianwenxueshidai。suihouzai2017nian10yue,nuobeierwulixuejiangbanfajilezaiyinlibotancefangmianzuochujiechugongxiande3weikexuejia。daomuqianweizhi,daduoshutancedaodeyinliboshijianshiyoujishigetaiyangzhiliangdeshuangheidongbinghexingchengde。zheileishuangheidongyibanrenweishiyoulianggegaosuraozhuanqiegaosuzizhuandedazhilianghengxingxingchengde。

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