Results 81 to 90 of about 1,370,806 (214)
, 2011 In this article we review the discovery of the accelerating universe using type Ia supernovae. We then outline ways in which dark energy - component that causes the acceleration - is phenomenologically described.
Huterer, Dragan
core +1 more source
Leibnizova kontingencia nie je náhoda ani nahodilost
Filosofický časopis, 2023 Conceptual exactitude is one of the appanages of philosophical thinking and metaphysical thinking specifically. A slight semantic nuance may, in the case of a particular philosophical concept, lead to inaccuracy of thought.
Škára, Martin
doaj +1 more source
THEORIA. An International Journal for Theory, History and Foundations of Science, 2014 In (Béziau 2001), Béziau provides a means by which Gentzen s sequent calculus can be combined with the general semantic theory of bivaluations. In do- ing so, according to Béziau, it is possible to construe the abstract "core" of logics in general, where logical syntax and semantics are "two sides of the same coin". The central suggestion there is that,
openaire +7 more sources
Proceedings of the Physical Society, 1932 I THINK everyone will agree with Miss Clark that if the distribution of nebular velocities is considered to be mainly a distance effect, it indicates an expanding system, whereas if it is mainly a time effect it indicates a system which is about to enter on a stage of contraction; and her letter is of service in pointing out the two alternatives ...
openaire +5 more sources
Curvature tension: Evidence for a closed universe [PDF]
, 2019 The curvature parameter tension between Planck 2018, cosmic microwave background lensing, and baryon acoustic oscillation data is measured using the suspiciousness statistic to be 2.5 to 3$\sigma$.
Will Handley
semanticscholar +1 more source
Discovery of a supernova explosion at half the age of the Universe [PDF]
Nature, 1997 The ultimate fate of the Universe, infinite expansion or a big crunch, can be determined by using the redshifts and distances of very distant supernovae to monitor changes in the expansion rate.
S. Perlmutter +22 more
semanticscholar +1 more source
Deflationary Universe Scenario
, 1993 We show that it is possible to realize an inflationary scenario even without conversion of the false vacuum energy to radiation. Such cosmological models have a deflationary stage in which $Ha^2$ is decreasing and radiation produced by particle creation ...
Albrecht +16 more
core +2 more sources
Science and Ideology: The Case of Cosmology in the Soviet Union, 1947–1963
Acta Baltica Historiae et Philosophiae Scientiarum, 2013 Ideological considerations have always influenced science, butrarely as directly and massively as in the Soviet Union during the early Cold War period, when cosmology was among the sciences that became politicized.
Kragh, Helge
doaj +1 more source
Observations of the Icy Universe [PDF]
, 2015 Freeze-out of the gas-phase elements onto cold grains in dense interstellar and circumstellar media builds up ice mantles consisting of molecules that are mostly formed in situ (H2O, NH3, CO2, CO, CH3OH, and more).
A. Boogert, P. Gerakines, D. Whittet
semanticscholar +1 more source
Early-Universe Simulations of the Cosmological Axion. [PDF]
Physical Review Letters, 2019 Ultracompact dark matter (DM) minihalos at masses at and below 10^{-12} M_{⊙} arise in axion DM models where the Peccei-Quinn (PQ) symmetry is broken after inflation.
M. Buschmann, J. Foster, B. Safdi
semanticscholar +1 more source