Results 71 to 80 of about 1,788,580 (200)

Probing the solar interior

open access: yes, 1995
The internal layers of the Sun are clearly shielded by the solar material beneath the visible surface. An accurate description of the Sun's interior is necessarily based on the equations governing solar structure along with the physical inputs describing
Chitre, S. M.
core  

Magnetic Fields in the Solar Convection Zone

open access: yesLiving Reviews in Solar Physics, 2009
Active regions on the solar surface are generally thought to originate from a strong toroidal magnetic field generated by a deep seated solar dynamo mechanism operating at the base of the solar convection zone.
Yuhong Fan
doaj  

Inversion for Inferring Solar Meridional Circulation: The Case with Constraints on Angular Momentum Transport inside the Sun

open access: yesThe Astrophysical Journal
We have carried out inversions of travel times as measured by Gizon et al. to infer the internal profile of the solar meridional circulation (MC). A linear inverse problem has been solved by the regularized least-squares method with a constraint that the
Yoshiki Hatta   +2 more
doaj   +1 more source

Exploring the Substructure of the Near-surface Shear Layer of the Sun

open access: yesThe Astrophysical Journal
The gradient of rotation in the near-surface shear layer (NSSL) of the Sun provides valuable insights into the dynamics associated with the solar activity cycle and the dynamo. Results obtained with global oscillation mode splittings lack resolution near
M. Cristina Rabello Soares   +2 more
doaj   +1 more source

On the Origin of Solar Hemispheric Helicity Rules: Rise of 3D Magnetic Flux Concentrations through a Background Magnetic Field

open access: yesThe Astrophysical Journal
Sunspots and active regions observed on the solar surface are widely believed to be manifestations of compact predominantly toroidal magnetic field structures (“flux tubes”) that emerge by magnetic buoyancy from the deeper interior of the Sun.
Bhishek Manek, Nicholas Brummell
doaj   +1 more source

Seismic Study of the Solar Interior: Inferences from SOI/MDI Observations During Solar Activity

open access: yes, 2005
Work on the structure, asphericity and dynamics of the solar interior from p-mode frequencies and frequency splittings was carried out primarily in collaboration with Dr. Eff-Darwich (University of La Laguna, Tenerife).
Korzennik, Sylvain G.   +1 more
core  

Solar flux emergence : a three-dimensional numerical study [PDF]

open access: yes, 2008
Flux is continually emerging on the Sun, making its way from the solar interior up into the atmosphere. Emergence occurs on small-scales in the quiet Sun where magnetic fragments emerge, interact and cancel and on large-scales in active regions where ...
Murray, Michelle J.
core   +1 more source

Jupiter’s Interior with an Inverted Helium Gradient

open access: yesThe Planetary Science Journal
Jupiter’s gravity field observed by NASA’s Juno spacecraft indicates that the density in the 10–100 GPa region is lower than one would expect from a H/He adiabat with 0.5–5× solar water abundance, as has been observationally inferred in Jupiter’s ...
N. Nettelmann, J. J. Fortney
doaj   +1 more source

Concentrating or Non-Concentrating Solar Collectors for Solar Aided Power Generation?

open access: yes, 2015
A hypothesis has been put forward that using non-concentrating solar collectors in a Solar Aided Power Generation (SAPG) plant might be a more efficient and economical option than using concentrating solar collectors.
Yuan, S.   +5 more
core   +1 more source

Orbital dynamics of high area-to-mass ratio spacecraft under the influence of J2 and solar radiation pressure [PDF]

open access: yes, 2011
This paper investigates the effect of planetary oblateness and solar radiation pressure on the orbit of high area-to-mass spacecraft. A planar Hamiltonian model shows the existence of equilibrium orbits with the orbit apogee pointing towards or away from
Colombo, Camilla   +2 more
core   +1 more source

Home - About - Disclaimer - Privacy