Statistical Investigation of B-fields in Cores and Filaments using JCMT/SCUPOL Legacy Survey Archival Data

Authors: Porel P*

DOI: 10.23880/oaja-16000144

Volume 2, Issue 2

Abstract

SCUPOL, the polarimeter for SCUBA on the James Clerk Maxwell Telescope was used for polarization observations of 104 regions at 850 μm wavelength and 15” resolution in the mapping mode by Matthews BC, et al. [1]. They presented the polarization values and magnetic field morphologies in these regions. In this work, we took the opportunity to use this big legacy survey data to investigate further the collective statistical properties of the measured polarization in different starforming regions containing cores and filaments. We did not reproduce the polarization maps but used the polarization value catalogs to investigate the statistics of distributions. In some of these regions, the data from Combined Array for Research in Millimeter-wave Astronomy (CARMA) polarization observation at 1.3 mm wavelength and 2.”5 resolution was also available from the TADPOL survey. We used that data and compared it with JCMT/SCUPOL values. We also study how the direction of outflows appears to relate the mean B-field direction from large scale (JCMT observation at 15”) to small scale (CARMA observation 2.5”) for the nine core regions common in both.

Keywords: ISM; Dust; Polarization; Magnetic Fields

View PDF