基于γ暴等觀測限制宇宙學(xué)參數(shù)與暗能量模型
發(fā)布時間:2018-08-12 10:31
【摘要】:利用Union2 557個Ia型超新星數(shù)據(jù)限制宇宙學(xué)參數(shù)qo、jo和so,在紅移z≤1.4范圍內(nèi)校準(zhǔn)5個γ暴(gamma-ray burst,GRB)光度關(guān)系.假設(shè)γ暴光度關(guān)系不隨紅移演化,得到66個高紅移γ暴的距離模數(shù).最后綜合利用宇宙微波背景(Cosmic Microwave Background,CMB)輻射觀測數(shù)據(jù)、重子聲波震蕩(Baryon AcousticOscillations,BAO)觀測數(shù)據(jù)與116個具有紅移的γ暴數(shù)據(jù)限制幾個常見的暗能量模型.根據(jù)貝葉斯判據(jù)(Bayesian Information Criterion,BIC),發(fā)現(xiàn)ACDM模型是最好的模型;根據(jù)Akaike判據(jù)(Akaike Information Criterion,AIC),發(fā)現(xiàn)JBP模型是最好的模型.
[Abstract]:Using the data of Union2 557 Ia supernovae to limit the cosmological parameters qojo and so. the photometric relationships of five gamma-ray burster-GRBs are calibrated in the range of redshift z 鈮,
本文編號:2178780
[Abstract]:Using the data of Union2 557 Ia supernovae to limit the cosmological parameters qojo and so. the photometric relationships of five gamma-ray burster-GRBs are calibrated in the range of redshift z 鈮,
本文編號:2178780
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