Počet záznamů: 1

Dark energy and the anthropic principle

  1. 1.
    0360620 - MU-W 2012 RIV NL eng J - Článek v odborném periodiku
    Křížek, Michal
    Dark energy and the anthropic principle.
    New Astronomy. Roč. 17, č. 1 (2012), s. 1-7 ISSN 1384-1076
    Grant CEP: GA AV ČR(CZ) IAA100190803
    Výzkumný záměr: CEZ:AV0Z10190503
    Klíčová slova: Hubble constant * dark energy * Mars * gravitational aberration
    Kód oboru RIV: BA - Obecná matematika
    Impakt faktor: 1.850, rok: 2012
    http://www.sciencedirect.com/science/article/pii/S1384107611000558

    The Hubble constant is split into two terms H = H1 + H2 , where H1 is a decreasing function due to the Big Bang and the subsequent gravitational interaction that slows the expansion of the Universe and H2 is an increasing function that corresponds to dark energy which accelerates this expansion. For T = 13.7 Gyr we prove that H2(T) > 5 m/(yr AU). This is a quite large number and thus the impact of dark energy, which is spread almost everywhere uniformly, should be observable not only on large scales, but also in our Solar system. In particular, we show that Earth, Mars and other planets were closer to the Sun 4.5 Gyr ago. The recession speed ≈5.3 m/yr of the Earth from the Sun seems to be just right for an almost constant influx of solar energy from the origin of life on Earth up to the present over which time the Sun’s luminosity has increased approximately linearly. This presents further support for the Anthropic Principle.
    Trvalý link: http://hdl.handle.net/11104/0198129
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