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题名: TESTING COSMOLOGICAL MODELS WITH TYPE Ic SUPER LUMINOUS SUPERNOVAE
作者: Wei, Jun-Jie1, 2; Wu XueFeng(吴雪峰)1, 5, 6; Melia, Fulvio1, 3, 4
刊名: ASTRONOMICAL JOURNAL
出版日期: 2015-05-01
卷号: 149, 期号:5, 页码:165
关键词: cosmic background radiation ; cosmological parameters ; cosmology: observations ; cosmology: theory ; distance scale ; supernovae: general
学科分类: 天文和天体物理
DOI: 10.1088/0004-6256/149/5/165
文章类型: Article
英文摘要: The use of type Ic super luminous supernovae (SLSNe Ic) to examine the cosmological expansion introduces a new standard ruler with which to test theoretical models. The sample suitable for this kind of work now includes 11 SLSNe Ic, which have thus far been used solely in tests involving the. cold dark matter (Lambda CDM) model. In this paper, we broaden the base of support for this new, important cosmic probe by using these observations to carry out a one-on-one comparison between the R-h = ct and Lambda CDM cosmologies. We individually optimize the parameters in each cosmological model by minimizing the chi(2) statistic. We also carry out Monte Carlo simulations based on these current SLSNe Ic measurements to estimate how large the sample would have to be in order to rule out either model at a similar to 99.7% confidence level. The currently available sample indicates a likelihood of similar to 70-80% that the R-h = ct universe is the correct cosmology versus similar to 20-30% for the standard model. These results are suggestive, though not yet compelling, given the current limited number of SLSNe Ic. We find that if the real cLosmology is Lambda CDM, a sample of similar to 240 SLSNe Ic would be sufficient to rule out R-h = ct at this level of confidence, while similar to 480 SLSNe Ic would be required to rule out Lambda CDM if the real universe is instead R-h = ct. This difference in required sample size reflects the greater number of free parameters available to fit the data with Lambda CDM. If such SLSNe Ic are commonly detected in the future, they could be a powerful tool for constraining the dark-energy equation of state in Lambda CDM, and differentiating between this model and the R-h = ct universe.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Astronomy & Astrophysics
研究领域[WOS]: Astronomy & Astrophysics
关键词[WOS]: KULLBACKS SYMMETRIC DIVERGENCE ; HUBBLE-SPACE-TELESCOPE ; GAMMA-RAY BURSTS ; SUPERLUMINOUS SUPERNOVAE ; CT UNIVERSE ; R-H ; IA SUPERNOVAE ; ULTRALUMINOUS SUPERNOVAE ; LEGACY SURVEY ; DARK-ENERGY
收录类别: SCI
所属项目名称: PMO_LIB-IR
语种: 英语
WOS记录号: WOS:000354065200016
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/14886
Appears in Collections:南极天文中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Univ Arizona, Dept Phys, Program Appl Math, Tucson, AZ 85721 USA
4.Univ Arizona, Dept Astron, Tucson, AZ 85721 USA
5.Chinese Ctr Antarctic Astron, Nanjing 210008, Jiangsu, Peoples R China
6.Nanjing Univ, Purple Mt Observ, Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210008, Jiangsu, Peoples R China
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