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Titlebook: Observational Cosmology; Proceedings of the 1 Adelaide Hewitt,Geoffrey Burbidge,Li Zhi Fang Conference proceedings 1987 International Astro

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发表于 2025-3-21 19:04:37 | 显示全部楼层 |阅读模式
书目名称Observational Cosmology
副标题Proceedings of the 1
编辑Adelaide Hewitt,Geoffrey Burbidge,Li Zhi Fang
视频video
丛书名称International Astronomical Union Symposia
图书封面Titlebook: Observational Cosmology; Proceedings of the 1 Adelaide Hewitt,Geoffrey Burbidge,Li Zhi Fang Conference proceedings 1987 International Astro
描述The Symposium was held at the Great Wall Sheraton Hotel in Beijing, China in the period August 25-30, 1986. The decision to concentrate on the observational aspects of modern cosmology was taken in part because this conference has come in a period when there have been several international meetings on one aspect of modern cosmology, namely the early universe and its possible relationship to particle physics. While that approach is extremely exciting, it has the disadvantage that its connection with much of observational cosmology is very indirect. Thus there has been little opportunity to discuss critically the wealth of new data that are now becoming available which bear on the structure and evolution of the Universe but not always on its early history. This Symposium was planned to cover all aspects of observational cosmology, with only comparatively minor excursions into theory. Nearly 200 participants attended from 21 countries. A total of 26 invited papers and 73 contributed papers were given. This meant that everyone worked hard and long from 9 A.M. to about 5:30 P.M. for five of the six days of the conference. In addition to oral contributions, space was made available for p
出版日期Conference proceedings 1987
关键词Cosmology; Gravity; Universe; astronomy; quasar
版次1
doihttps://doi.org/10.1007/978-94-009-3853-3
isbn_softcover978-90-277-2476-2
isbn_ebook978-94-009-3853-3Series ISSN 1743-9213 Series E-ISSN 2352-2186
issn_series 1743-9213
copyrightInternational Astronomical Union 1987
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Primordial Nucleosynthesis of 7Lit exception between the atmospheric Li/H ratio and Te, and (2) at Te and (2) at T ≤ 5600 K the average lithium abundance is
  • = 1.2 ± 0.3 x .. The latter value constitutes a lower limit on the ^Li fraction produced in primordial nucleosynthesis and thereby significantly constrains the cosmic ratio of baryons to photons.
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    Observational Cosmology 1920–1985: An Introduction to the Conferenceed as they have been discussed in the archive literature. The problem of observational bias is emphasized, as is the difficult recent search for secular evolutionary effects. Current problems which have prospects for solutions in the next decades are set out in the final section.
    发表于 2025-3-22 12:24:35 | 显示全部楼层
    发表于 2025-3-22 14:37:49 | 显示全部楼层
    1743-9213 he observational aspects of modern cosmology was taken in part because this conference has come in a period when there have been several international meetings on one aspect of modern cosmology, namely the early universe and its possible relationship to particle physics. While that approach is extre
    发表于 2025-3-22 21:03:31 | 显示全部楼层
    The Status of the Hubble Diagram In 1986volution effects, which dominate over the cosmological model differences. Most radio galaxies apparently have had active star formation, with a continually declining rate, but a few are quite faint and red; they may have had a relatively passive evolution.
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    The Cosmic Microwave Backgroundcale angular distribution are described, as well as searches for small angular scale fluctuations on arcsecond to degree scales. A few of the consequences of these measurements and upper limits for cosmology, astrophysics, and theories of galaxy formation are touched on here.
    发表于 2025-3-23 09:01:50 | 显示全部楼层
    High Sensitivity Observations of the Microwave Background Radiationevolves into the present-day Universe (z = 0). Such measurements provide stringent tests of the cosmological theories of universal evolution and have implications for allowed values of the density and composition of matter in the Universe.
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