منابع مشابه
Was There a Big Bang ?
CIENCE IS a congeries of great quests, and cosmology is the grandest of the great quests. Taking as its province the universe as a whole, cosmology addresses the old, the ineradicable questions about space and time, nature and destiny. It is not a subject for the tame or the timid. For the first half of the 20th century, cosmology remained a discipline apart, as a clutch of talented but otherwo...
متن کاملThe Hot Big Bang and Beyond ∗
The hot big-bang cosmology provides a reliable accounting of the Universe from about 10 sec after the bang until the present, as well as a robust framework for speculating back to times as early as 10 sec. Cosmology faces a number of important challenges; foremost among them are determining the quantity and composition of matter in the Universe and developing a detailed and coherent picture of ...
متن کاملOn initial conditions for the Hot Big Bang
We analyse the process of reheating the Universe in the electroweak theory where the Higgs field plays a role of the inflaton. We estimate the maximal temperature of the Universe and fix the initial conditions for radiation-dominated phase of the Universe expansion in the framework of the Standard Model (SM) and of the νMSM — the minimal extension of the SM by three right-handed singlet fermion...
متن کاملMass Boom versus Big Bang: Einstein Was Right
When considering possible time variations of fundamental physical constants one has to keep firm well established principles. Following this approach we keep firm the Action Principle, General Relativity (the Equivalence Principle), and Mach’s Principle. Also we introduce a new principle under the name of “TOTAL INTERACTION” and reconsider Weinberg’s relation with a new approach. Consistent wit...
متن کاملGalaxy Formation : Was there a Big Bang Shell ?
The tight correlation of galactic velocity distribution to both luminosity and black hole mass, the relation of halo parameters to luminous mass distribution can not be due to collapse dynamics. A baryonic big bang shell can solve galaxy formation problems by forming the supermassive black holes necessary to capture the initial blast wave in a coordinated pattern.
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1983
ISSN: 0074-1809
DOI: 10.1017/s0074180900038766