Interstellar Circular Polarization

Ultraviolet Interstellar Linear Polarization

Astro-2 has revealed a broad weak spectral feature in the ultraviolet interstellar linear polarization for two lines of sight, connrming the original detection toward HD 197770 and adding HD 147933-4. These are the only two polarization features found in some 30 lines of sight now observed. Both features are centered close to 2175 A, the position of the ubiquitous ultraviolet extinction bump. T...

Irregular Magnetic Fields in Interstellar Clouds and Variations in the Observed Circular Polarization of Spectral Lines

The strengths of magnetic fields in interstellar gas clouds are obtained through observations of the circular polarization of spectral line radiation. Irregularities in this magnetic field may be present due to turbulence, waves or perhaps other causes, and may play an essential role in the structure and evolution of the gas clouds. To infer information about these irregularities from the obser...

Magnetically induced circular polarization.

A New Circular Polarization Metamaterial Ferrite Phase Shifter

In this paper, a new X band Metamaterial (MTM) based ferrite phase shifter is presented. The phase shifter is excited by circular polarized wave base on combination of TE10 and TE01 modes in a square waveguide. In order to synthesize negative refractive index metamaterial (NIM), negative permeability of ferrite slabs in extraordinary mode is mixed with the negative permitivity of printed period...

Ultraviolet Interstellar Linear Polarization. Iii. Features

Astro-2 has revealed a broad, weak spectral feature in the ultraviolet interstellar linear polarization for two lines of sight, conÐrming the original detection toward HD 197770 and adding HD 147933È4. These are the only two polarization features found in some 30 lines of sight now observed. Both features are centered close to 2175 the position of the ubiquitous ultraviolet extinction bump. Two...