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Are Uranus &Neptune Responsible for Solar Grand Minima and Solar Cycle Modulation? 被引量:5
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作者 Geoff J. Sharp 《International Journal of Astronomy and Astrophysics》 2013年第3期260-273,共14页
Detailed solar Angular Momentum (AM) graphs produced from the Jet Propulsion Laboratory (JPL) DE405 ephemeris display cyclic perturbations that show a very strong correlation with prior solar activity slowdowns. These... Detailed solar Angular Momentum (AM) graphs produced from the Jet Propulsion Laboratory (JPL) DE405 ephemeris display cyclic perturbations that show a very strong correlation with prior solar activity slowdowns. These same AM perturbations also occur simultaneously with known solar path changes about the Solar System Barycentre (SSB). The AM perturbations can be measured and quantified allowing analysis of past solar cycle modulations along with the 11,500 year solar proxy records (14C & 10Be). The detailed AM information also displays a recurring wave of modulation that aligns very closely with the observed sunspot record since 1650. The AM perturbation and modulation is a direct product of the outer gas giants (Uranus & Neptune). This information gives the opportunity to predict future grand minima along with normal solar cycle strength with some confidence. A proposed mechanical link between solar activity and planetary influence via a discrepancy found in solar/planet AM along with current AM perturbations indicate solar cycle 24 & 25 will be heavily reduced in sunspot activity resembling a similar pattern to solar cycles 5 & 6 during the Dalton Minimum (1790-1830). 展开更多
关键词 SOLAR GRAND Minimum SOLAR MODULATION Angular Momentum uranus NEPTUNE SSB Barycentre
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Generation of VLF Mode Instability by Generalized Distribution Function in the Presence of Parallel AC Electric Field in Uranus 被引量:1
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作者 R.S.PANDEY M.SINGH +2 位作者 Pramod KUMAR K.M.SINGH S.KUMAR 《Plasma Science and Technology》 SCIE EI CAS CSCD 2010年第4期421-425,共5页
VLF (very low frequency) mode instability with parallel AC electric field was studied for generalized loss-cone distribution with an index j, which is reducible to bi-Maxwellian, loss- cone and delta function for j ... VLF (very low frequency) mode instability with parallel AC electric field was studied for generalized loss-cone distribution with an index j, which is reducible to bi-Maxwellian, loss- cone and delta function for j = 0, 1 and co. The particle trajectories and dispersion relation are obtained through a kinetic approach and method of characteristic solutions. The calculations are compared with the observations of low frequency waves of Voyager 2. The growth rate of plasma parameters suited to magnetosphere of Uranus is obtained. It is inferred that the magnitude as well as frequency of AC (alternating current) field increases the growth rate and widen the band width significantly. In addition to temperature anisotropy, particles in plasma having generalized loss-cone distribution provide an additional source of energy. 展开更多
关键词 generation of VLF mode instability in uranus
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Beyond Venus and Mars:The Creative Queer Spaces of Daniel Nolasco’s Uranus,Neptune,and Pluto
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作者 Diego Santos Vieira de Jesus 《Psychology Research》 2020年第11期459-463,共5页
The aim is to examine the creative queer spaces of Daniel Nolasco’s short films Uranus,Neptune,and Pluto.The main argument indicates that the trilogy unveils geographic landscapes that are not common to current imagi... The aim is to examine the creative queer spaces of Daniel Nolasco’s short films Uranus,Neptune,and Pluto.The main argument indicates that the trilogy unveils geographic landscapes that are not common to current imagination of a typical Brazilian heteronormative space,built by the contrast between the beaches and forests and the density of the city.In the three films,Nolasco explores the deviations from any heteronormative norm in creative queer spaces where alternative experiences and sensibilities of the male homoerotic body are possible. 展开更多
关键词 queer movies queer spaces Daniel Nolasco uranus NEPTUNE PLUTO Brazilian cinema
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