Zobrazeno 1 - 10 of 18 pro vyhledávání: '"D. N. Schramm"'
1
The Evolution of the Universe
Autor: D. N. Schramm, R. G. Kron, P. J. E. Peebles, Edwin L. Turner
Publikováno v: Scientific American. 271:52-57
Some 15 billion years ago the universe emerged from a hot, dense sea of matter and energy. As the cosmos expanded and cooled, it spawned galaxies, stars, planets and life.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4385b8d7485a697b859563a6d3eb4a11
https://doi.org/10.1038/scientificamerican1094-52
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3
DARK MATTER: An Introduction
Autor: D. N. Schramm
Publikováno v: Generation of Cosmological Large-Scale Structure ISBN: 9789401065139
This lecture series is to provide an overview of the basic dark matter arguments and the role of the relevant cosmological parameters. In particular, the current situation on the age of the universe and the Hubble constant are reviewed since they pro
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::31fb49d0d522ef0e39a65c131a62f1fb
https://doi.org/10.1007/978-94-009-0053-0_6
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4
The age of the universe
Autor: D. N. Schramm
An overview of the current controversy on the age of the universe is presented. It is shown that the age of the oldest star, globular clusters, yields an age estimate of approximately 14 {+-} 2 {+-} 2 Gyr (where the first {+-} is statistical and the
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::751d262cc2f1611a2793861ced4c7f9c
https://doi.org/10.2172/469620
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5
THE NEED FOR NEW NEUTRINO PHYSICS OR A COOLER SUN IN THE SOLAR NEUTRINO PROBLEM
Autor: X. Shi, D. N. Schramm
t is shown that the current solar neutrino situation, now that we have the SAGE and GALLEX result along with the results from the Kamioksnde and the Homestake experiments, is unfortunately still quite ambiguous. The differences between observations a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::358383946431144a61e5a625b4b1ae27
https://doi.org/10.1142/9789812831538_0077
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6
The Evolution of the Universe
Autor: D. N. Schramm, R. G. Kron, P. J. E. Peebles, Edwin L. Turner
Some 15 billion years ago the universe emerged from a hot, dense sea of matter and energy. As the cosmos expanded and cooled, it spawned galaxies, stars, planets and life.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4a13bd0854d85a6391fe0ea233663639
https://doi.org/10.1142/9789812831538_0002
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8
Actinide Lines in the Spectra of Peculiar Stars: the Search for Evidence of Recent r-Process Events
Autor: J. B. Blake, D. N. Schramm
Publikováno v: International Astronomical Union Colloquium. 32:183-188
SummaryA discussion is presented on how to ascertain whether certain peculiar star phenomena can be understood as resulting from an enhanced abundance of recently synthesized (< 109years ago) r-process material. The actinides Th and U are shown to be
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::75da54a995b19df8f3d487c0d44d275f
https://doi.org/10.1017/s0252921100080532
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10
Weak Interaction and the Large Scale Structure of the Universe
Autor: D. N. Schramm
Publikováno v: Weak and Electromagnetic Interactions in Nuclei ISBN: 9783642716911
The combined problems of large scale structure, the need for non-baryonic dark matter if Ω = 1, and the need to make galaxies early in the history of the universe seem to be placing severe constraints on cosmological models. In addition, it is shown
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d247b78c9ce521912da952ffb24f417b
https://doi.org/10.1007/978-3-642-71689-8_195
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