نتایج جستجو برای: age of universe
تعداد نتایج: 21200700 فیلتر نتایج به سال:
A comprehensive analysis of two recent collections of distant Type Ia supernovae is presented. The method used is both simple and rigorous. Correcting the absolute magnitudes for the measured decline rates yields in nearly all cases a dispersion consistent with measurement uncertainties, showing from these data that Type Ia supernovae are remarkably reliable standardized candles. With 26 supern...
I point out that an upper limit of approximately 20 Gyr (for a Hubble constant of 72 km/s/Mpc) or alternatively on the H 0-independent quantity H 0 t 0 < 1.47, exists on the age of the Universe, essentially independent of the unknown equation of state of the dominant dark energy component in the Universe. Unless astrophysical constraints on the age of the Universe can convincingly reduce the up...
The particular outlook of some scholars about human is raised from principles of a particular cosmography that considers human as the unique creature of the universe with “personality” based upon wisdom and reason. This view has also relegated the other creatures to the level of “thing and tool” for human life. Meanwhile, the Islamic philosophy inspired by the Quran, not only considers that all...
The similar verses of the Quran are one of the important topics in the history of Qur'anic interpretation and are considered by scholars and commentators. From similar verses and problems,is 172 Arif. The first interpretations about the verse come to narratives Which is famous for the traditions of the universe. These traditions were later called into question by the Mu'tazilites and ratio...
I point out that an effective upper limit of approximately 20 Gyr (for a Hubble constant of 72 km/s/Mpc) or alternatively on the H 0-independent quantity H 0 t 0 < 1.47, exists on the age of the Universe, essentially independent of the unknown equation of state of the dominant dark energy component in the Universe. Unless astrophysical constraints on the age of the Universe can convincingly red...
Recent observational indications of an accelerating universe enhance the interest in studying models with a cosmological constant. We investigate cosmological expansion (FRW metric) with Λ > 0 for a general linear equation of state p = wρ, w > −1, so that the interplay between cosmological vacuum and quintessence is allowed, as well. Four closed-form solutions (flat universe with any w, and w =...
Recent observational indications of an accelerating universe enhance the interest in studying models with a cosmological constant. We investigate cosmological expansion (FRW metric) with Λ > 0 for a general linear equation of state p = wρ, w > −1, so that the interplay between cosmological vacuum and quintessence is allowed, as well. Four closed-form solutions (flat universe with any w, and w =...
the purpose of this article is to investigate the differences between men and women’s painting regardless of being limited to presuppositions about masculine and feminine art. therefore, first the appearance of differences between men and women art during the eighteenth and nineteenth century is considered. having done that, various types of women’s painting, feminine painting and feminism pain...
The cosmic microwave background (CMB) is one of only a few physically observable remnants of the early Universe. Studies of the spectrum, polarization and spatial distribution of the CMB can potentially lead to a detailed understanding of the processes that took place in the early Universe. Many of the outstanding cosmological questions regarding the age, contents, future, and large scale dynam...
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