宇宙速度場兩點相關(guān)的暗暈?zāi)Ｐ兔枋?/H1>
發(fā)布時間：2018-07-28 19:40
【摘要】：利用當前宇宙大尺度結(jié)構(gòu)和星系形成領(lǐng)域流行的暗暈?zāi)Ｐ?對宇宙速度場兩點相關(guān)函數(shù)進行精確的描述。暗暈?zāi)Ｐ湍芙o出宇宙速度場無論是在線性還是非線性尺度上的估計,而且,模型中考慮了暗暈之間的相對運動,從而解決了在大尺度上模型的預(yù)言結(jié)果和數(shù)值模擬樣本統(tǒng)計結(jié)果之間不自洽的矛盾。結(jié)合暗暈占據(jù)數(shù)模型,還可以把模型推廣到描述星系本動速度兩點相關(guān)函數(shù)上,這無疑給通過星系本動速度來對宇宙大尺度結(jié)構(gòu)和星系形成及演化進行限制方面的研究提供了一個強大的工具,并指出了可能的努力方向。
[Abstract]:Using the popular dark halo model in the field of cosmic large-scale structure and galaxy formation, the two-point correlation function of cosmic velocity field is described accurately. The dark halo model can estimate the cosmic velocity field on both linear and nonlinear scales, and the relative motion between dark halos is considered in the model. Thus, the contradiction between the prediction results of the model and the statistical results of numerical simulation samples is solved on a large scale. Combined with the dark halo occupation number model, the model can also be extended to the two-point correlation function for describing the local velocity of galaxies. This provides a powerful tool for the study of the limitation of the large-scale structure of the universe and the formation and evolution of galaxies through the intrinsic velocity of galaxies, and points out the possible direction of efforts.
【作者單位】： 中國科學(xué)院上海天文臺星系與宇宙學(xué)重點實驗室;中國科學(xué)院研究生院;
【基金】：中國科學(xué)院研究生科技創(chuàng)新與社會實踐資助專項 上海天文臺青年人才基金
【分類號】：P159.5
，
本文編號：2151380
本文鏈接：http://sikaile.net/kejilunwen/tianwen/2151380.html
[Abstract]:Using the popular dark halo model in the field of cosmic large-scale structure and galaxy formation, the two-point correlation function of cosmic velocity field is described accurately. The dark halo model can estimate the cosmic velocity field on both linear and nonlinear scales, and the relative motion between dark halos is considered in the model. Thus, the contradiction between the prediction results of the model and the statistical results of numerical simulation samples is solved on a large scale. Combined with the dark halo occupation number model, the model can also be extended to the two-point correlation function for describing the local velocity of galaxies. This provides a powerful tool for the study of the limitation of the large-scale structure of the universe and the formation and evolution of galaxies through the intrinsic velocity of galaxies, and points out the possible direction of efforts.
【作者單位】： 中國科學(xué)院上海天文臺星系與宇宙學(xué)重點實驗室;中國科學(xué)院研究生院;
【基金】：中國科學(xué)院研究生科技創(chuàng)新與社會實踐資助專項 上海天文臺青年人才基金
【分類號】：P159.5
，
本文編號：2151380
本文鏈接：http://sikaile.net/kejilunwen/tianwen/2151380.html
