Prospects for Studying Interstellar Magnetic Fields with a Far-Infrared Polarimeter for CALISTO/SAFIR

Details Prospects for Studying Interstellar Magnetic Fields with a Far-Infrared Polarimeter for CALISTO/SAFIR Prospects for Studying Interstellar Magnetic Fields with a Far-Infrared Polarimeter for CALISTO/SAFIR

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...21113605d&link_type=abstract

American Astronomical Society, AAS Meeting #211, #136.05; Bulletin of the American Astronomical Society, Vol. 39, p.978

Astronomy and Astrophysics

Astronomy

1

Scientific paper

Polarimetry at mid-infrared through millimeter wavelengths using airborne and ground-based telescopes has revealed magnetic structures in dense molecular clouds in the interstellar medium, primarily in regions of star formation. Furthermore, spectropolarimetry has offered clues about the composition of the dust grains and the mechanism by which they are aligned with respect to the local magnetic field. The sensitivity of the observations to date has been limited by the emission from the atmosphere and warm telescopes. A factor of 1000 in sensitivity can be gained by using instead a cold space telescope. With 5 arcminute resolution, Planck will make the first submillimeter polarization survey of the full Galaxy early in the next decade. We discuss the science case for and basic design of a far-infrared polarimeter on the CALISTO/SAFIR space telescope, which offers resolution in the few arcsecond range and wavelength selection of cold and warm dust components. Key science themes include the formation and evolution of molecular clouds in nearby spiral galaxies, the magnetic structure of the Galactic center, and interstellar turbulence.

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