Tracing Cosmic Dawn
نویسندگان
چکیده
منابع مشابه
Subaru studies of the cosmic dawn
An overview on the current status of the census of the early Universe population is given. Observational surveys of high redshift objects provide direct opportunities to study the early epoch of the Universe. The target population included are Lyman Alpha Emitters (LAE), Lyman Break Galaxies (LBG), gravitationally lensed galaxies, quasars and gamma-ray bursts (GRB). The basic properties of thes...
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The origin and composition of the cosmological dark matter remain a mystery. However, upcoming 21-cm measurements during cosmic dawn, the period of the first stellar formation, can provide new clues on the nature of dark matter. During this era, the baryon-dark matter fluid is the slowest it will ever be, making it ideal to search for dark matter elastically scattering with baryons through mass...
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The most successful cosmological models to date envision structure formation as a hierarchical process in which gravity is constantly drawing lumps of matter together to form increasingly larger structures. Clusters of galaxies currently sit atop this hierarchy as the largest objects that have had time to collapse under the influence of their own gravity. Thus, their appearance on the cosmic sc...
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Abundance measurements with bright background light sources, such as quasars and GRBs, probe the large-scale distribution and physical state of evolving, coupled gasstar dark matter structures in the Universe. Not all baryons inferred from BBN and the CMB are accounted for in the local Universe; a significant fraction resides in warm-hot tenuous gas filaments tracing the large-scale distributio...
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We summarize here the first results of a new spectroscopic survey of galaxies in the Coma cluster with −20.5 < MB < −14. Differences between the last epoch of star formation (SF) activity in S0 and elliptical galaxies are discussed. Furthermore, we show that about half of all galaxies without present-day SF display signs of activity at z < 1− 2. Systematic trends of most recent SF epoch with ga...
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ژورنال
عنوان ژورنال: Proceedings of the International Astronomical Union
سال: 2017
ISSN: 1743-9213,1743-9221
DOI: 10.1017/s1743921318000194