Results 11 to 20 of about 12,118 (294)
Tidal forces in dirty black hole spacetimes
European Physical Journal C: Particles and Fields, 2022 Black holes can be inserted in very rich astrophysical environments, such as accretion disks. Although isolated black holes are simple objects in general relativity, their accretion disks may significantly enrich the field configurations of their ...
Haroldo C. D. Lima Junior +3 more
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Do isotropic tidal forces imply isotropic cosmic expansion?
European Physical Journal C: Particles and Fields, 2023 We investigate the dynamics of the spatially flat universes submitted to isotropic tidal forces and adiabatic expansion under Einstein’s equations. Surprisingly, the tendency to a high Hubble anisotropy at late times starts to appear as far as we assume ...
Fabio Scalco Dias +2 more
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Tidal forces around Schwarzschild black hole in cloud of strings and quintessence
European Physical Journal C: Particles and Fields, 2022 We study the tidal forces and their effect in Schwarzschild black hole surrounded with clouds of strings and quintessence. Two horizons are present for this black hole and the event horizon shrinks on increasing the values of both, the string cloud and ...
Rashmi Uniyal
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Annals of Geophysics, 2008 Continuous gravity observations performed in the last few years, both at Mt. Etna and Stromboli, have prompted the need to improve the tidal analysis in order to acquire the best corrected data for the detection of volcano related signals. On Mt.
B. Ducarme +3 more
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Tidal forces in Kerr-AdS and Grey galaxies
Classical and Quantum GravityAbstract In a recent paper (Kim et al 2023 arXiv:2305.08922 [hep-th]), it has been proposed that the endpoint of the Kerr-AdS superradiant instability is a Grey Galaxy. The conjectured solutions are supposed to be made up of a black hole with critical angular velocity in the centre of AdS, surrounded by a large flat disk of thermal bulk ...
Anand Balivada +2 more
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BMC Emergency Medicine, 2021 Background For adequate ventilation during bag-valve-mask ventilation, rescuers should ensure a proper mask seal using the one-handed or two-handed technique.
Dongchoon Uhm, Ajung Kim
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Friction factor evaluation in tidal rivers and estuaries
MethodsX, 2022 The Saint-Venant equations are usually used for simulation of unsteady flow in various hydraulic environments including tidal estuaries and adjacent river sections called tidal rivers.
Evgeniya Panchenko, Andrei Alabyan
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Tidal forced expirations [PDF]
European Respiratory Journal, 2000 The progress of infant lung function testing has been retarded by both the lack of user-friendly, widely available and affordable equipment and the lack of standardized methodology. The European Respiratory Society/American Thoracic Society Task Force on Standards for Infant Respiratory Function Testing was formed in an attempt to address these ...
Sly, Peter D. +5 more
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Analysis of Tidal Accelerations in the Solar System and in Extrasolar Planetary Systems
Applied Sciences, 2021 Volcanism powered by tidal forces inside celestial bodies can provide enough energy to keep important solvents for living systems in the liquid phase. A prerequisite to calculate such tidal interactions and consequences is depending on simulations for ...
Klaus Paschek +3 more
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The Planetary Theory of Solar Activity Variability: A Review
Frontiers in Astronomy and Space Sciences, 2022 Commenting the 11-year sunspot cycle, Wolf (1859, MNRAS 19, 85–86) conjectured that “the variations of spot-frequency depend on the influences of Venus, Earth, Jupiter, and Saturn.” The high synchronization of our planetary system is already nicely ...
Nicola Scafetta, Antonio Bianchini
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