Experiences with Airborne and Ground-Based Polarimetry

Details Experiences with Airborne and Ground-Based Polarimetry Experiences with Airborne and Ground-Based Polarimetry

2003-05-15

arxiv.org/abs/astro-ph/0305281v2

Astronomy and Astrophysics

Astrophysics

12 pages, 6 figures, To be published in the proceedings of ``The Cosmic Microwave Background and its Polarization'', New Astro

Scientific paper

Polarimetry in the far-infrared and submillimeter has been valuable in tracing magnetic fields in bright Galactic Clouds. We discuss the techniques we have developed and trends we have found in polarization vs column density, and vs wavelength. The polarization spectrum has proven to be more interesting than had been anticipated. It is potentially valuable in explaining grain alignment and in characterizing dust species. One can expect the infrared cirrus to be a much simpler environment than the molecular clouds that have heretofore been explored at multiple wavelengths. Although cirrus observations must deal with low signals and wide extent, it is becoming possible to measure accurately the spectral energy distribution from mid-infrared to microwave frequencies and it should soon become feasible to determine the polarization spectrum over the same range.

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