Linear polarization and total flux density of silicon monoxide masers and active extragalactic objects at millimeter wavelengths

Details Linear polarization and total flux density of silicon monoxide masers and active extragalactic objects at millimeter wavelengths Linear polarization and total flux density of silicon monoxide masers and active extragalactic objects at millimeter wavelengths

Sep 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984phdt.........4b&link_type=abstract

Ph.D. Thesis Massachusetts Univ., Amherst.

Astronomy and Astrophysics

Astronomy

15

Flux Density, Polarization (Waves), Radio Sources (Astronomy), Relativistic Effects, Electron Distribution, Emission Spectra, Maxwell Equation, Particle Size Distribution, Vibration

Scientific paper

In order to investigate the linear polarization properties of millimeter-wave radio sources, a polarimeter was constructed for use on the Five College Radio Astronomy Observatory 14m telescope. Linear polarization and total flux density observations of SiO masers (at 43 and 86 GHz) and active extragalactic objects (at 87 GHz) were conducted, resulting in the first multitransitional study of SiO maser polarization, and the first rapid time sampling (days to weeks) of extragalactic source polarization at millimeter wavelengths. A model is developed to explain the observed polarization and total intensity profiles of the Orion masers. The profiles can be simply accounted for by maser emission from a rotating and expanding disk, with an azimuthally dependent field orientation.

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