Results 31 to 40 of about 1,722,078 (332)
The Astronomical Journal, 2023 We present a study of the potential for convolutional neural networks (CNNs) to enable separation of astrophysical transients from image artifacts, a task known as “real–bogus” classification, without requiring a template-subtracted (or difference) image,
Tatiana Acero-Cuellar +5 more
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Physics Letters B, 2003 Velocity-dependent interactions in a fundamental-string dominated universe lead quite naturally, with reasonable assumptions on initial conditions, to an accelerating expanding universe without assuming the existence of a cosmological constant. This result also holds generically for a universe dominated by moving extremal black holes, owing to a ...
Ramzi R. Khuri, Ramzi R. Khuri
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Holographic Dark Information Energy: Predicted Dark Energy Measurement
Entropy, 2013 Several models have been proposed to explain the dark energy that is causing universe expansion to accelerate. Here the acceleration predicted by the Holographic Dark Information Energy (HDIE) model is compared to the acceleration that would be produced ...
Michael Paul Gough
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Accelerated Universe from Modified Chaplygin Gas and Tachyonic Fluid
Universe, 2022 A cosmological model with an exotic fluid is investigated. We show that the equation of state of this “modified Chaplygin” gas can describe the current accelerated expansion of the universe.
Hachemi Benaoum
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Thermodynamics of dark energy [PDF]
Fortschritte der Physik, 2008 AbstractThermodynamic properties of dark energy are discussed assuming that dark energy is described in terms of a selfinteracting complex scalar. We first show that, under certain assumptions, selfinteracting complex scalar field theories are equivalent to purely kinetic k‐essence models.
Bilić, Nevenko, Bilić, Neven
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International Journal of Modern Physics D, 2006 Recent large-scale peculiar velocity surveys suggest that large matter volumes could be moving with appreciable velocity with respect to the CMB rest frame. If confirmed, such results could conflict with the Cosmological Principle according to which the matter and CMB rest frames should converge on very large scales.
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The Dark Energy Survey: more than dark energy – an overview [PDF]
Monthly Notices of the Royal Astronomical Society, 2016 32 pages, 15 figures; a revised Figure 1 and minor changes, to match the published MNRAS ...
Vinu Vikram +156 more
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Dark Energy from Cosmological Energy Conservation
Advances in Astronomy, 2023 The value of the gravitational wave energy density is unknown. Current progress in gravitational wave detection suggests that the energy density of the stochastic gravitational wave background (SGWB) will be estimated in the next decades. A derivation of
Manuel Uruena Palomo
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Dark energy: Staring into darkness [PDF]
Nature, 2016 The path to understanding dark energy begins with a single question: has it always been the same throughout the history of the Universe?
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Testing dark energy after pre-recombination early dark energy
Physics Letters B, 2022 In the studies on pre-recombination early dark energy (EDE), the evolution of Universe after recombination is usually regarded as ΛCDM-like, which corresponds that the equation of state of dark energy responsible for current accelerated expansion is w=−1.
Hao Wang, Yun-Song Piao
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