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2018-03-09 Abstract
Title: The magnetic field strength and energetics of OMC 1
Speaker: Dr. Kate Pattle (NTHU)
Time: 15:30pm 9th Mar. 2018 (Friday)
Venue: R521, IoA, 2nd General Building 綜二館R521
We are entering a new era of astronomical polarimetry, in which new and stringent observational constraints are being placed on the role of magnetic fields in star formation. In this talk, I will present James Clerk Maxwell Telescope (JCMT) POL-2 polarimetric observations of the OMC 1 region of the Orion A filament, taken as part of the BISTRO (B-Fields in Star-Forming Region Observations) survey. I will discuss modifications to the Chandrasekhar-Fermi method which allow estimation of plane-of-sky magnetic field strengths in the presence of a magnetic field showing large-scale, ordered variation, and will derive an estimate of the magnetic field strength in OMC 1. I will discuss the energetic importance and evolutionary history of the magnetic field in the OMC 1 region, with particular emphasis on the interaction between the magnetic field and the explosive BN/KL outflow.