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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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At least 73 records · Page 4

Intrinsic reddening of Eta Carinae.

Invalidity of Pagel method for intrinsic and interstellar reddening for peculiar objects, discussing excitation mechanism for forbidden lines of ionized Fe for Eta Carinae

Lambert, D. L.↗

Intrinsic transport theorem.

Intrinsic transport theorem for electrodynamics of continuous media, using Cartan method of exterior differential forms

Kiehn, R. M.↗

Turbulent diffusion with memories and intrinsic shear

The first part of the present theory is devoted to the derivation of a Fokker-Planck equation. The eddies smaller than the hydrodynamic scale of the diffusion cloud form a diffusivity, while the inhomogeneous, bigger eddies give rise to a nonuniform migratory drift. This introduces an eddy-induced shear which reflects on the large-scale diffusion. The eddy-induced shear does not require the presence of a permanent wind shear and is intrinsic to the diffusion. Secondly, a transport theory of diffusivity is developed by the method of repeated-cascade and is based upon a relaxation of a chain of memories with decreasing information. The full range of diffusion consists of inertia, composite, and shear subranges, for which variance and eddy diffusivities are predicted. The coefficients are evaluated. Comparison with experiments in the upper atmosphere and oceans is made.

Tchen, C. M.↗

The intrinsic linear polarization of 53 Camelopardalis and alpha 2 Canum Venaticorum

The intrinsic phase-dependent linear polarization of two magnetic Ap stars is studied. The polarization characteristics in a broad blue filter band and in the ultraviolet are outlined, and the mechanisms of polarization are examined. The blue band polarization of 53 Cam (corrected by removing the stellar component) is found to be compatible with an oblique rotator whose angular parameters are in essential agreement with those deduced by Landstreet (1970) and by Huchra (1972).

Kemp, J. C.↗

X-ray spectra of Hercules X-1. 2: Intrinsic beam

The X-ray spectrum of Hercules X-1 was observed in the energy range 2-24 keV with sufficient temporal resolution to allow detailed study of spectral correlations with the 1.24 sec pulse phase. A region of spectral hardening which extends over approximately the 1/10 pulse phase may be associated with the underlying beam. The pulse shape stability and its asymmetry relative to this intrinsic beam are discussed.

Pravdo, S. H.↗