English
聯系我們
網站地圖
郵箱
舊版回顧



宇宙重元素來源之謎解開

文章來源:科技日報 張夢然   發布時間:2019-05-10  【字號:     】  

  盡管元素周期表已經誕生150年,人們仍然不了解很多宇宙重元素是如何被創造出來的,包括黃金、白金以及便攜式電子產品中的稀土元素。據美國太空網9日報道的一項最新研究稱,絕大部分宇宙中的金、鈾和其他重元素,都是由迅速旋轉的坍縮恒星產生的。

  宇宙中三種最輕的元素——氫、氦和鋰,都誕生于宇宙的最早時刻,即大爆炸后僅一分鐘左右,而元素周期表上的鐵元素大部分都是在恒星的核心形成的。但是,周期表中比鐵更重的元素(如金和鈾)的形成方式一直是個謎。

  先前的研究提出了一個關鍵線索:“r-過程”,或稱為快中子捕獲過程,是在核心發生塌縮的超新星中創造富含中子且比鐵重的元素的過程。

  2017年,借助激光干涉引力波天文臺(LIGO)和“處女座”(Virgo)引力波探測器探測到的“漣漪”,天文學家發現了中子星之間的碰撞。引力波的發現使研究人員認為,大多數“r-過程”元素都是在中子星合并的物質繭中形成的。

  由此,以加拿大圓周理論物理研究所科學家為首的團隊,開發了一種計算機模擬的吸積盤(由彌散物質組成的、圍繞中心體轉動的結構,常見于繞恒星運動的盤狀結構),并預測了可能會形成的塌縮。他們發現,在這些吸積盤中,很多物質都圍繞著新生的黑洞進行了圓形化。

  研究人員表示,這些物質令人難以置信地熱且密,在最內部區域,產生了“形成重元素如金和鉑金所需的初始條件”。研究認為,坍縮物應該產生了至少80%的重元素含量,而近20%來自中子星合并。

  團隊希望未來能進一步研究元素是如何在其他類型的吸積盤中產生的,例如強磁化恒星產生的超新星,進而厘清宇宙中的化學進化和星系“組裝”問題。




(責任編輯:侯茜)

附件:

專題推薦

相關新聞


© 1996 - 中國科學院 版權所有 京ICP備05002857號  京公網安備110402500047號  聯系我們

地址:北京市三里河路52號 郵編:100864

彩天下www.c1359.com www.713693.com | www.gl68.com | www.pg0.cc | www.5154.me | www.38261.cc | www.760637.com | www.7861.xyz | www.036.biz | www.96831.com | www.361672.com | 220668.com | www.129568.com | www.532589.com | www.110761.com | www.607111.cc | www.445597.com | www.567579.com | www.722726.com | 764510.com | 吉利彩票www.80075n.com | 万历彩票www.77114p.com | 871882.com | www.169393.com | www.444939.com | www.317031.com | www.389922.com | 99福彩www.761996.com | www.s95.cn | www.169.cm | www.106994.com | www.281195.com | www.cp8220.com | www.03be.com | www.8530.wang | www.95885.cc | www.301626.com | www.783029.com | www.869358.com | 3234.biz | www.cp3366.com | 500彩票网www.393830.com | www.1080.site | www.933785.com | 652613.com | www.244224.com | www.293982.com | www.234324.com | www.381311.com | www.763832.com | www.960492.com | 9098.biz | 511705.com | 495003.com | www.5313.me | www.cp852.cc | sg74.com | www.zx23.com | www.4881.cn | www.92829.cc | www.120289.com | www.376257.com | www.805879.com | 5856.cm | 579758.com | www.34br.com | www.53426.com | www.704849.com | www.835571.com | 932005.com | 918彩票网www.918ar.com | www.12521.cc | www.388440.com | www.835927.com | www.982028.com | www.925987.com | 809430.com | www.24940.com | www.047510.com | www.22661.cc | www.9365.net | www.065560.com | 338264.com | www.557151.com | 279665.com | www.81wh.com | www.0919.vip | www.mo1.com | www.26js.cc | www.90892.com | www.208273.com | www.362105.com | www.576423.com | www.835576.com | www.5ti.cc | www.49lb.com | www.xp14.com | 中国福利彩票www.33588y.com | 819431.com | 950176.com | www.5899.xyz | www.41181.com | www.42609.com | www.622410.com | www.906702.com | 488350.com | www.45hp.com | www.ua89.com | www.1296.top | www.164031.com | www.286283.com | www.447903.com | www.590800.com | www.622171.com | 019538.com | 众乐彩票www.237944.com | www.56ut.com | www.67064.cc | www.955930.com | 296539.com | 716963.com | 520289.com | 彩票坊www.02022.com | www.86ys.com | www.39556.cc | www.272695.com | www.127444.com | www.537392.com | www.503325.com | www.741688.com | www.696378.com | www.930189.com | 506625.com | www.cp2825.com | 797265.com | www.58iv.com | www.74zo.com | www.94ct.com | www.04rz.com | www.876340.com | 49kk.cc | 237072.com | 579435.com | 343233.com | 大赢家彩票平台www.791397.com | 博亿彩票www.669by.com | 611434.com | www.6455.vip | www.22068.cc | www.7573.wang | www.65443.com | www.220898.com | www.189217.com | www.zy9.cc | www.2176.in | www.076303.com | www.129967.com | www.868148.com | 661559.com | 057885.com | 411506.com | www.dk99.cc | www.99362.cc | www.361511.com | www.673046.com | www.789767.com | www.999853.com | 284234.com | 143196.com | www.063815.com | www.362333.com | www.441135.com | 6362.biz | www.7aw.com | www.028111.com | 577016.com | www.567552.com | www.2632.cm | www.954169.com | www.050664.com | 254283.com | www.400826.com | www.99245.cc | www.71184.com | www.39952.com | www.0820.cc | www.060685.com | www.125311.com | www.402638.com | 770238.com | www.924.tv | www.135279.com | www.833811.com | www.at99.com | www.7zt.com | 029602.com | 126彩票网www.126509.com | www.zx98.com | www.9558.live | www.123066.com | www.372072.com | www.781348.com | www.739604.com | 947405.com | 494623.com | 952953.com | www.677676.com | www.tb26.com | www.54ve.com | www.7183.win | www.025085.com | www.117261.com | www.190501.com | www.694810.com | www.782918.com | 天天中彩www.840202.com | www.pw04.com | www.111637.com | www.097187.com | www.587373.com | www.618491.com | www.cb48.com | www.79ux.com | www.223630.com | www.659228.com | 590726.com | 105916.com | www.zw99.com | www.ma34.com | www.12152.com | www.8153.cm | www.00486.com | www.5265.xyz | www.128028.com | www.135487.com | www.508826.com | www.3814.cm | 78736.com | 727347.com | www.220221.com | 500万彩票www.w796.com | www.615954.com | www.33621.com | 026748.com | www.252576.com | www.190863.com | 70979.cc | 827631.com | 876137.com | 易旺彩票www.ywzuqiu.com | www.fq66.cc | www.6270.vip | www.86554.com | www.282586.com | www.546123.com | www.362054.com | www.434318.com | www.588376.com | www.274466.com | www.035025.com | www.027610.com | www.3555.vip | www.28mv.com | www.st75.com | 044043.com | 026745.com | www.984037.com | www.6864.me | www.56274.cc | www.352302.com | www.958399.com | 230196.com | www.987483.com | 804589.com | www.370812.com | www.710218.com | www.849555.com | www.yv76.com | www.41hq.com | www.96eq.com | www.27382.cc | www.799959.com | www.940061.com | www.772404.com | www.636231.com | www.333380.cc | www.79yo.com | www.805988.com | www.9163.cc | www.1523.wang | www.73800.cc | www.0006.cc | www.9684.cc | www.647.biz | www.130960.com | www.22897.cc | www.532455.com | www.995090.com | www.885333.com | www.16801.com | www.31587.cc | www.43361.com | www.973992.com | 676508.com | 028632.com | www.92el.com | www.5597.pw | www.4859.biz | www.173150.com | www.781036.com | www.686615.com | 158444.com | www.975180.com | www.768632.com | www.699695.com | 172250.com | www.970297.com | www.773893.com | www.865458.com | www.lu35.com | www.tk97.com | 大赢家彩票平台www.107658.com | 894505.com | www.68590.com | www.693014.com | www.666977.com | www.769418.com | www.622360.com | www.863152.com | 909868.com | www.144787.com | 开心彩票www.572539.com | www.28fh.com | www.82ec.com | www.99832.cc | www.390191.com | www.505175.com | 469702.com | 211105.com | www.cai3116.com | www.mg0.cc | 大赢家彩票网www.178213.com | www.71ds.cc | www.52dy.cc | www.062343.com | www.214425.com | www.983942.com | 410162.com | 915325.com | www.202344.com | www.352036.com | www.199039.com | www.057821.com | www.901066.com | www.874180.com | JJ彩票www.42042.cc | 超级彩票www.566011.com | www.po93.com | www.2jf.com | www.3216.net | www.57432.com | www.188649.com | www.245479.com | www.36379.cc | www.34949.com | www.551411.com | 831048.com | 022538.com | www.9336.online | www.50931.com | www.434228.com | www.891370.com | www.846023.com | 689067.com | www.c95.shop | www.504050.com | 576389.com | www.919449.com | www.654365.com | www.9360.pw | www.214319.com | www.548274.com | 964665.com | 860275.com | 899049.com | k3k3彩票www.602965.com | www.ms55.com | www.tt54.com | 幸运彩票www.773618.com | www.an24.com | JJ彩票www.42042.cc | www.td81.com | 326393.com | 509572.com | www.983496.com | www.60.cn | www.1029.wang | 960464.com | www.pq32.com | www.6584.biz | www.58pu.com | www.267308.com | www.70389.com | 500彩票www.540477.com | www.05ky.com | www.19wr.com | www.24774.com | www.086631.com | www.32fz.com | www.181221.com | www.667084.com | www.619306.com | www.922703.com | www.06iz.com | www.93bp.com | www.255091.com | www.655765.com | 985774.com | 43am.com | 841868.com | www.8206.vip | 987430.com | 378076.com | 904068.com | 128670.com | 01276.com | 969349.com | www.789707.com | www.595485.com | www.568935.com | www.bx23.com | 309928.com | 76589.com | 209148.com | 362772.com | www.zg23.com | 快彩www.81678w.com | www.cp8538.com | 8816彩票www.8816aa.com | www.00hb.com | www.257774.com | www.782172.com | www.902392.com | www.945978.com | www.974353.com | www.790004.com | www.699307.com | www.820677.com | 160153.com | 639523.com | 996059.com | m.360619.com | 637690.com | 053518.com | 939944.com | 043268.com | 500万彩票www.01500w.com | 576144.com | 博友彩www.707250.com | www.566000.com | 307792.com | www.ev63.com | www.5097.cn | www.56bb.com | www.09ig.com | www.g53.com | www.15ng.com | www.cai4449.com | www.660044.cc | 610447.com | 650896.com | 68彩票www.68689c.com | 易彩集团www.25688c.com | www.cp535.com | www.63da.com | www.9771.wang | www.095600.com | www.568479.com | www.890817.com | www.654670.com | www.951754.com | www.872636.com | 688149.com | www.995334.com | www.959054.com | 001977.com | 039971.com--1435.com | www.147788.com | www.550042.com | www.ev86.com | www.029164.com | www.63262.cc | www.16990.cc | www.852225.com | www.143135.com | www.275982.com | www.217539.com | www.774638.com | www.770504.com | www.550817.com | www.205066.com | www.282661.com | www.265100.com | 352557.com | www.2622.date | www.087231.com | www.203829.com | www.624178.com | 093936.com | www.pg66.com | www.78755.com | www.78852.com | www.336564.com | www.320540.com | www.726891.com | www.627685.com | www.578328.com | www.380311.com | 639610.com | 324826.com | 964180.com | www.45086.com | www.372527.com | 022140.com | 984178.com | 084360.com | 930135.com | 006923.com | www.69714.com | www.369943.com | www.4685.biz | www.372326.com | www.00390.cc | www.29051.com | www.116118.com | www.al88.com | www.42eb.com | www.3914.biz | www.067578.com | www.86297.com | www.30wg.com | www.nx49.com | www.gd24.com | www.97py.com | www.49555.cc | www.207128.com | www.239399.com | www.357936.com | www.650143.com | www.771465.com | www.758077.com | www.882353.com | www.782575.com | 415057.com | 542669.com | 752692.com | 298234.com | 274626.com | www.904266.com | www.059016.com | www.395433.com | www.192653.com | 中彩网www.61233j.com | www.bc33.com | 277536.com | www.iq42.com | www.tk97.com | 905922.com | www.055084.com | www.519276.com | www.154559.com | www.0659.vip | www.6969.online | www.91dz.cc | www.045020.com | www.878162.com | www.987814.com | 915112.com | www.cai0411.com | www.mh.cc | www.iq87.com | www.14eg.com | www.bg53.com | 978240.com | www.ci07.com | www.nq40.com | www.lm65.com | www.29329.com | www.275731.com | www.237335.com | www.266775.com | www.294813.com | www.308306.com | www.193990.com | www.151617.com | www.345100.cc | www.276772.com | www.163471.com | www.105698.com | www.733965.com | www.507527.com | www.882512.com | www.480011.com | www.109955.com | www.893102.com | 842918.com | www.786989.com | www.397406.com | www.702635.com | www.357964.com | www.8040.vip | www.pt81.cc | 快彩www.81678s.com | 621036.com | 中华彩票www.914910.com | www.3657.cm | 多乐彩票www.344242.com | 608045.com | www.408802.com | www.800937.com | www.853322.com | 683000.com | www.982795.com | 882847.com | 032113.com | www.777074.com | www.892014.com | 763638.com | 617366.com | 613379.com | www.973847.com | www.916242.com | www.892517.com | www.821639.com | 495432.com | 326716.com | www.788956.com | www.35958.com | www.6459.vip | www.vr67.com | www.5840.org | www.21yy.com | www.032763.com | www.040973.com | www.808668.cc | www.660872.com | www.873554.com | www.706335.com | www.022978.com | www.0198.biz | www.i68.in | 647934.com | 418016.com | www.100556.com | www.070568.com | www.60164.com | www.654116.com | www.549234.com | www.jv98.com | www.gc31.com | www.1728.xyz | www.3236.win | www.5689.pw | www.in96.com | 六福彩票www.66ffh.com | 093915.com | www.822682.com | www.zd69.com | www.ac58.com | www.79tp.com | www.701989.com | www.549342.com | 614366.com | www.831927.com | www.484504.com | bh46.cc | www.vg79.com | www.ho65.com |