基本信息
浏览量:1014
职业迁徙
个人简介
Bahcall's work focuses on addressing questions such as: What is the large-scale structure of our Universe? How did structure form and evolve? How much dark matter exists in the Universe and where is it located? What is the nature of the mysterious dark energy? What is the fate of our Universe and its expansion? Bahcall uses different methods and a variety of tracers to answer these questions, including galaxies, clusters of galaxies, superclusters, and quasars. She combines observational data from large-scale surveys (such as the Sloan Digital Sky Survey and others) and other observations to determine the large-scale structure of the universe and its properties and compare it with those expected from cosmological simulations. Bahcall and collaborators’ determination of properties such as the cluster correlation function, the cluster mass function and its evolution with redshift, the mass-to-light function from galaxies to superclusters and from small to large cosmic scales, the geometrical shape of clusters and of large-scale structure have provided powerful constraints on cosmology including one of the first determinations of the mass-density of the Universe and the amplitude of mass fluctuations. Their results revealed a sub-critical Universe – containing only ~25% of the mass needed to halt the cosmic expansion; this result has now been nicely confirmed by recent observations and is part of the current standard LCDM cosmology.
研究兴趣
论文共 415 篇作者统计合作学者相似作者
按年份排序按引用量排序主题筛选期刊级别筛选合作者筛选合作机构筛选
时间
引用量
主题
期刊级别
合作者
合作机构
Physical Review Lettersno. 6 (2022)
Astronomy & Astrophysics (2019)
加载更多
作者统计
合作学者
合作机构
D-Core
- 合作者
- 学生
- 导师
数据免责声明
页面数据均来自互联网公开来源、合作出版商和通过AI技术自动分析结果,我们不对页面数据的有效性、准确性、正确性、可靠性、完整性和及时性做出任何承诺和保证。若有疑问,可以通过电子邮件方式联系我们:report@aminer.cn