現(xiàn)代宇宙學(xué)中的數(shù)值模擬技術(shù)和應(yīng)用
發(fā)布時(shí)間：2019-04-30 21:11
【摘要】：宇宙尺度上物理過程的多樣性和高度非線性使數(shù)值模擬成為現(xiàn)代宇宙學(xué)必不可少的研究手段,它不僅可以細(xì)致追蹤宇宙結(jié)構(gòu)的形成和演化歷史,同時(shí)也為觀測和理論模型的檢驗(yàn)建立了一個(gè)橋梁.本文將總結(jié)計(jì)算宇宙學(xué)領(lǐng)域技術(shù)方法的最新發(fā)展,包括無碰撞粒子N體數(shù)值模擬技術(shù),引入重子物理的計(jì)算流體方法.在此基礎(chǔ)上,我們將針對現(xiàn)代宇宙學(xué)的核心科學(xué)問題,簡要綜述數(shù)值模擬技術(shù)在面向下一代巡天觀測,尤其是暗物質(zhì)和暗能量探測方面的實(shí)際應(yīng)用.此外,我們選擇性地討論了數(shù)值模擬在第一代恒星和反饋?zhàn)饔�、宇宙中的氣體吸積和恒星形成,以及高紅移星系盤的形成研究中所發(fā)揮的作用.因應(yīng)下一代大規(guī)模巡天的開展和超級計(jì)算技術(shù)的快速進(jìn)步,我們也展望了在未來十年計(jì)算宇宙學(xué)和相關(guān)科學(xué)可能取得的進(jìn)展及發(fā)展趨勢.
[Abstract]:The diversity and high nonlinearity of physical processes on the cosmic scale make numerical simulation an indispensable research tool in modern cosmology. It can not only trace the history of the formation and evolution of the cosmic structure in detail. At the same time, it also establishes a bridge for observation and theoretical model test. This paper summarizes the latest development of computational cosmology techniques, including non-collision particle N-volume numerical simulation, and introduces the computational fluid method of baryon physics. On this basis, we will briefly review the practical application of numerical simulation technology to the next generation of sky survey observations, especially the detection of dark matter and dark energy, aiming at the core scientific problems of modern cosmology. In addition, we selectively discuss the role of numerical simulation in the study of the first generation of stars and feedback, gas accretion and star formation in the universe, and the formation of Gao Hong's plate. In response to the development of the next generation of large-scale sky surveys and the rapid progress of supercomputing technology, we also look forward to the possible progress and development trend of computational cosmology and related sciences in the next decade.
【作者單位】： 中國科學(xué)院紫金山天文臺;南京大學(xué)天文與空間科學(xué)學(xué)院;教育部現(xiàn)代天文與天體物理重點(diǎn)實(shí)驗(yàn)室;
【基金】：國家自然科學(xué)基金(批準(zhǔn)號:11273060,91230115)
【分類號】：P159
[Abstract]:The diversity and high nonlinearity of physical processes on the cosmic scale make numerical simulation an indispensable research tool in modern cosmology. It can not only trace the history of the formation and evolution of the cosmic structure in detail. At the same time, it also establishes a bridge for observation and theoretical model test. This paper summarizes the latest development of computational cosmology techniques, including non-collision particle N-volume numerical simulation, and introduces the computational fluid method of baryon physics. On this basis, we will briefly review the practical application of numerical simulation technology to the next generation of sky survey observations, especially the detection of dark matter and dark energy, aiming at the core scientific problems of modern cosmology. In addition, we selectively discuss the role of numerical simulation in the study of the first generation of stars and feedback, gas accretion and star formation in the universe, and the formation of Gao Hong's plate. In response to the development of the next generation of large-scale sky surveys and the rapid progress of supercomputing technology, we also look forward to the possible progress and development trend of computational cosmology and related sciences in the next decade.
【作者單位】： 中國科學(xué)院紫金山天文臺;南京大學(xué)天文與空間科學(xué)學(xué)院;教育部現(xiàn)代天文與天體物理重點(diǎn)實(shí)驗(yàn)室;
【基金】：國家自然科學(xué)基金(批準(zhǔn)號:11273060,91230115)
【分類號】：P159
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6 許i，
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