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J/ApJ/416/276  Eq. of State in Magnetic Neutron Stars    (Rognvaldsson+ 1993)

Thomas-Fermi calculations of atoms and matter in magnetic neutron stars: effects of higher Landau bands Rognvaldsson O.E., Fushiki I., Gudmundsson E.H., Pethick C.J., Yngvason J. <Astrophys. J., 416, 276 (1993)> =1993ApJ...416..276R
ADC_Keywords: Models, evolutionary; Atomic physics; Stars, variable Keywords: Thomas-Fermi approximation; Landau levels; Neutron Stars Description: This catalog is based on the calculated equation of state in cold dense matter. Each table in the catalog lists bulk properties of Fe-56 in a magnetic field ranging from one million to 1000 million Tesla. Introduction: We calculate the equation of state for cold dense matter in high magnetic fields in the Thomas-Fermi approximation, taking all Landau levels into account. Total energies and chemical potentials for atoms and matter are also calculated, and we present detailed profiles of the electron density as a function of the distance from the atomic nucleus for various values of the magnetic field strength and total matter density. The profiles show a Landau shell structure, which for iron atoms at low pressure is particularly pronounced for magnetic fields of order 1011 G. In compressed matter this structure is reflected in a high compressibility when the density is such that electrons at the boundary of a unit shell start to occupy a new Landau band. This leads to an oscillatory behavior of the density gradient as a function of depth in the surface layers of magnetic neutron stars. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file b10_0.dat 68 40 1 million (106) Tesla b10_5.dat 68 46 3 million (106.5) Tesla b11_0.dat 68 41 10 million (107) Tesla b11_5.dat 68 42 30 million (107.5) Tesla b12_0.dat 68 30 100 million (108) Tesla b12_5.dat 68 27 300 million (108.5) Tesla b13_0.dat 68 20 1000 million (109) Tesla
Byte-by-byte Description of file: *.dat
Bytes Format Units Label Explanations
1- 8 E8.2 kg/m3 density density of matter 10- 20 E11.5 m radius radius of cell 22- 32 E11.5 Pa pressure pressure 34- 45 E12.5 keV eatom total energy of atom (in 1.602E-16J) 47- 58 E12.5 keV chempot chemical potential (in 1.602E-16J) 59- 68 F10.7 m zg12 depth.(surface gravity)/(10^12 m/s^2)
References: Astrophysical Journal, 416, 276, 1993.
(End) N. Paul Kuin 09-Jul-1996
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