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

豪彩VIPwww.30xw.com www.009.bid | www.627298.com | www.tr48.com | www.9663.top | www.093620.com | www.867158.com | www.830603.com | www.401438.com | www.897263.com | www.292877.com | www.42ss.com | www.5704.vip | 141785.com | www.827468.com | www.387537.com | www.0088.tv | www.021835.com | www.643163.com | www.997251.com | 583059.com | 七天彩www.00665h.com | www.79di.com | www.57455.cc | www.246223.com | www.625260.com | 00ep.com | www.004266.com | www.nu97.com | www.909588.com | 198586.com | 237674.com | www.54oe.com | www.53761.cc | www.369464.com | 935017.com | www.180933.com | www.040233.com | www.x08.shop | 045199.com | www.703511.com | www.225381.com | 180092.com | www.53ja.com | www.104888.cc | www.307749.com | www.690670.com | www.947083.com | 576743.com | 565998.com | www.2980.cn | www.083002.com | www.884620.com | www.868375.com | 811279.com | 657286.com | www.7087.vip | www.098138.com | www.487442.com | www.905355.com | 035303.com | www.cp7657.com | www.rp70.com | www.74299.com | www.025474.com | www.120248.com | www.292583.com | www.620232.com | 52272.com | www.25uo.com | www.981838.com | www.271792.com | www.063336.com | www.a24.pw | 294477.com | www.797286.com | www.2410.shop | www.792117.com | www.177273.com | www.9725.biz | 尊彩www.083065.com | 439393.com | www.807499.com | www.316939.com | 824122.com | www.7px.cc | www.160698.com | www.766433.com | 208549.com | www.693516.com | www.507876.com | www.26139.cc | 财神网www.29277o.com | www.737771.com | www.026192.com | www.yz79.com | 371499.com | www.799418.com | www.071441.com | www.545762.com | www.06439.com | www.41316.com | 680785.com | www.me67.com | www.31813.com | www.182186.com | www.839385.com | www.gc3.com | www.11jg.com | www.460061.com | www.992580.com | www.zs0.com | www.2006.cc | www.253193.com | www.871418.com | 626458.com | www.4927.com | www.276.cx | www.517202.com | www.cai6044.com | www.77672.cc | www.055392.com | 797600.com | 270083.com | www.wj78.com | www.2971.wang | www.359960.com | www.818808.com | www.975424.com | www.h19.xyz | www.60ey.com | www.393903.com | www.id58.com | www.719115.com | www.777423.com | www.873143.com | www.03oy.com | www.9878.bid | www.298557.com | www.890504.com | www.952704.com | www.cai56.com | www.818573.com | www.103052.com | www.cp3803.com | www.803546.com | www.203619.com | www.557752.com | 015743.com | 128969.com | 842159.com | www.64kt.com | www.4737.xyz | www.sm87.cc | www.14lu.com | www.53696.cc | www.671160.com | 659500.com | www.819694.com | www.104076.com | www.981403.com | 365300.cc | www.37400.com | www.131576.com | www.350677.com | www.787028.com | www.948674.com | www.985970.com | www.fv54.com | www.1725.pw | www.456228.com | www.734441.com | 015853.com | 540611.com | www.27rs.com | www.1232.in | www.028515.com | www.804845.com | 751574.com | www.10566.cc | www.571324.com | www.565616.com | 500彩票www.50051x.com | www.886238.com | www.684611.com | www.008662.com | 彩天下www.c5127.com | www.904178.com | www.035120.com | www.287859.com | www.822165.com | 542987.com | 786580.com | www.984463.com | www.810633.com | www.19nz.com | www.024676.com | www.640178.com | www.r34.website | www.0512.vip | www.237497.com | www.905229.com | 280983.com | www.2233.cn | www.55372.cc | www.237503.com | www.417036.com | www.595567.com | www.872478.com | www.pf22.com | www.34dj.com | 611090.com | www.30eu.com | www.04132.com | www.698078.com | www.120653.com | www.cai5055.com | www.976213.com | www.400139.com | www.28639.com | www.87070.cc | www.31244.com | 863422.com | www.954656.com | www.198338.com | www.103938.com | 快彩在线www.2632h.com | www.15950.com | www.020797.com | www.125415.com | www.090599.com | 378900.com | www.221656.com | 381242.com | www.021618.com | www.868556.com | rg67.com | 名门彩www.33997j.com | www.292372.com | www.588699.com | www.740019.com | www.965870.com | 480199.com | 924178.com | www.5266.pw | www.40055.cc | www.82102.com | www.772567.com | 09117.com | www.jp80.com | www.116318.com | www.358464.com | www.813809.com | 6614.biz | www.9082.cn | www.020121.com | www.352859.com | www.687060.com | www.43180.com | 765939.com | www.427788.com | www.689752.com | www.853660.com | www.564.date | www.34958.com | www.6644.top | www.8847.com | www.169915.com | 935287.com | 063132.com | 917207.com | 572602.com | 天天中彩www.305988.com | www.qj28.com | www.96aj.com | www.23155.cc | www.327158.com | www.347039.com | www.426057.com | www.483281.com | www.518410.com | www.449006.com | www.521680.com | www.304082.com | www.669632.com | 791544.com | www.839840.com | www.32dx.com | www.0936.cc | www.64144.com | www.303422.com | 984502.com | www.518147.com | www.067715.com | www.11423.com | 379161.com | www.604449.com | www.72136.com | www.a75.net | www.966231.com | www.219864.com | www.034605.com | www.444363.com | www.588929.com | www.875892.com | www.292.space | www.01ps.com | www.mc50.com | www.045886.com | www.213762.com | www.523379.com | www.664664.com | 971743.com | www.xv38.com | www.e48.club | www.96114.com | www.011049.com | www.790092.com | www.805966.com | www.731147.com | www.821113.com | www.ve63.cc | www.151699.com | www.536963.com | www.829655.com | www.923356.com | www.ea60.com | www.zr72.com | www.0731.link | www.025431.com | www.009342.com | www.047606.com | www.126437.com | www.630302.com | 46651.com--46651.com | 375706.com | 博友彩www.978951.com | www.758.tv | www.16235.cc | www.06090.com | www.52111.com | www.544134.com | www.512002.com | www.400373.com | 566848.com | 077945.com | 358427.com | 31dw.com | 天下彩www.745568.com | www.33yr.com | www.801079.com | www.183555.com | www.5775.cn | 897319.com | www.635522.com | www.641248.com | www.303699.com | www.67kp.com | www.949283.com | www.219005.com | www.4118.biz | 954235.com | www.62659.cc | www.358933.com | www.42659.com | 071738.com | www.629318.com | www.360409.com | www.26284.com | www.ws05.com | www.456834.com | www.630887.com | 8456.pw | www.282.cc | www.7916.cm | www.009280.com | www.310301.com | www.170345.com | www.289753.com | www.812086.com | 001794.com | www.987440.com | 414933.com | 406988.com | www.984665.com | www.988394.com | www.956039.com | 588186.com | www.cai3777.com | www.035086.com | www.188491.com | www.468368.com | www.375127.com | www.641882.com | www.923883.com | www.921632.com | 217210.com | 235836.com | www.do49.com | www.150107.com | 504097.com | 718535.com | 网易彩票www.9356r.com | www.17233.com | www.207723.com | www.12236.com | www.8488.org | www.f99.vip | www.75cu.com | www.118537.com | www.231358.com | www.588115.com | www.970453.com | www.967301.com | www.908898.com | 984367.com | 027187.com | www.np9.com | 718808.com | 616742.com | y51.com | 388713.com | www.54449.com | www.854489.com | 353401.com--353401.com | 573308.com | www.kl38.com | www.ic19.com | www.35xq.com | www.126425.com | www.030733.com | www.097567.com | www.397557.cc | www.507352.com | www.555480.com | www.390258.com | www.867849.com | www.448679.com | www.678.cc | 237415.com | www.995464.com | www.198750.com | www.2fs.cc | www.875878.com | www.657510.com | www.409864.com | www.117316.com | www.57hw.com | www.889933.cc | www.2137.cc | www.150133.com | www.83bg.com | 福彩网www.60007h.com | www.787178.com | www.426726.com | www.0512.wang | www.0971.site | JJ彩票www.15010.cc | www.675756.com | www.75678.cc | www.9426.com | 500彩票网www.61655w.com | www.734263.com | www.au.com | www.1ne.cc | www.5nc.com | www.cp0332.com | 639257.com | 586813.com | 632175.com | 845740.com | 577734.com | 858177.com | www.701.mobi | www.381385.com | www.499284.com | www.302623.com | www.616113.com | www.558447.com | www.ri98.com | www.5174.biz | www.3114.vip | www.112149.com | www.281316.com | www.284506.com | www.217083.com | www.212467.com | www.174049.com | www.128472.com | www.kv9.com | www.4883.cc | www.82728.cc | www.187139.com | www.006728.com | www.335946.com | www.86uo.com | 515078.com | www.669591.com | www.477055.com | www.16765.com | www.753233.com | 336613.com | www.555949.com | www.25058.com | www.805499.com | www.754441.com | www.647567.com | www.766477.com | www.927118.com | www.856121.com | www.948421.com | www.751048.com | www.707526.com | www.577949.com | www.gu65.com | 36525.com | www.755985.com | www.2436.net | www.7212.cm | ld93.com | 519345.com | 435894.com | 万彩网www.wcp686.com | www.11zn.com | www.30pz.cc | www.64ry.com | www.6547.com | www.747.tv | www.1834.vip | www.130281.com | 59678.com | 990142.com | www.706414.com | o28.top | 中彩网www.91233v.com | www.066046.com | www.68619.cc | www.055033.com | www.785299.com | www.825661.com | www.709188.com | www.926510.com | www.760929.com | www.562308.com | www.532808.com | www.1073.com | www.220342.com | www.281342.com | www.324375.com | www.775524.com | www.921335.com | 303692.com | 942898.com | 025331.com | 572891.com | cai849.com | www.tx.cc | www.3569.cc | www.141797.com | www.765135.com | www.607651.com | www.566903.com | www.329208.com | www.562470.com | www.556468.com | www.506269.com | www.382315.com | www.395205.com | www.869200.com | www.709675.com | www.182046.com | www.7290.cc | 惠民彩票www.hm6333.com | www.838683.com | www.509325.com | www.1982.org | 701139.com | www.699053.com | www.055566.cc | 870353.com | www.659423.com | www.159070.com | 823786.com | 334452.com | www.jf54.com | 950772.com | 141195.com | www.68212.com | www.022176.com | www.p25.com | 006247.com | www.541124.com | 564114.com | www.e10.biz | www.9222.top | www.31683.cc | www.219977.com | www.756437.com | www.980184.com | www.99589.com | 2959.com | www.398057.com | www.404.site | www.6765.biz | www.8191.org | www.312262.com | www.cai8722.com | 216309.com | www.sw30.com | www.792563.com | www.536656.com | www.28603.com | www.rc67.com | www.945281.com | www.233554.com | www.dw10.com | 287295.com | www.608371.com | www.414462.com | www.700218.com | www.853990.com | 995447.com | 994452.com | 895248.com | 奔驰彩票www.281877.com | www.fc.com | 天下彩www.249880.com | www.201.wang | www.31836.com | www.515234.com | www.1966.club | www.651001.com | www.964932.com | 752789.com | www.834353.com | 379696.com | 幸运彩票www.373500.com | www.4111.cm | www.053661.com | www.118435.com | www.365179.cc | www.335688.com | www.269069.com | www.676422.com | www.665726.com | www.576551.com | www.876522.com | www.962354.com | www.703629.com | www.485959.com | www.290070.com | www.006046.com | www.3885.cc | 亿发彩票www.530833.com | 809202.com | www.amjs.com | www.948652.com | www.541623.com | 038132.com | www.938290.com | www.930277.com | www.767132.com | www.751104.com | www.xp37.com | www.23838.cc | www.59349.com | www.088486.com | www.62840.com | www.97879.com | www.31628.cc | www.006.xyz | www.lf18.com | 928282.com | 01304.com--j943.com | www.793848.com | www.502778.com | www.187192.com | www.010803.com | www.5418.net | www.rk46.com | 大赢