We analyze Fe I 630 nm observations of the quiet Sun at disk center taken with the spectropolarimeter of the Solar Optical Telescope aboard the Hinode satellite. A significant fraction of the scanned area, including granules, turns out to be covered by magnetic fields. We derive field strength and inclination probability density functions from a Milne-Eddington inversion of the observed Stokes ...

natural convection heat transfer has many applications in different fields of industry; such as cooling industries, electronic transformer devices and ventilation equipment; due to simple process, economic advantage, low noise and renewed retrieval. recently, heat transfer of nanofluids have been considered because of higher thermal conductivity coefficient compared with those of ordinary fluid...

The gravitational wave emission by a distorted rotating fluid star is computed. The distortion is supposed to be symmetric around some axis inclined with respect to the rotation axis. In the general case, the gravitational radiation is emitted at two frequencies: Ω and 2Ω, where Ω is the rotation frequency. The obtained formulæ are applied to the specific case of a neutron star distorted by its...

Proton N M R investigations of the smectic-C phases of three 4,4'-bis-/?-alkyloxy-azoxybenzenes (C7 , C 8 , C9) with temperature independent tilt angles are presented. The behaviour of well-aligned samples (strong magnetic field ^ 1.5 T, slow cooling rate) under rotation in the field can be described by the models of Luz and Meiboom, and Wise, Smith, and Doane, (LM/WSD) , resp. However, on pola...

in this paper, the hartree-fock method has been formulated to investigate some of the ground state properties of quasi-one-dimensional interacting electron gas in the presence of the magnetic field. the bare coulomb interaction between electrons has been assumed. for this system, we have also computed some of its thermodynamic and magnetic properties such as the energy, pressure, incompressibil...

Abstract The principal objective of the present paper is to know reaction thermal radiation and effects magnetic fields on a viscous dissipative free convection fluid flow past an inclined infinite plate in presence induced field. Galerkin finite element technique applied solve nonlinear coupled partial differential equations other physical parameters velocity, field, along with temperature pro...

The first systematic observations of sunspot umbrae using the lines of the Ti I multiplet at 2.2 μm are presented. Their diagnostic capabilities are investigated, developed and used to investigate the magnetic and velocity structure of a sunspot. These lines are most sensitive to cool plasma. In addition, they are extremely Zeeman sensitive. We find that a sunspot is composed of two distinct co...