Joint Astrophysics/Space Physics Seminar

April 18, 2017 - 11:30am
309 VAN

“Probing the W4 Superbubble with Faraday Rotation” by Ms. Allison Costa, Department of Physics & Astronomy, The University of Iowa

Abstract: Stellar bubbles, which are formed by the winds of massive stars, are plasmas, and their structure is influenced by the presence of magnetic fields. To understand the magnetic fields within these plasma shells, we observed 32 extra galactic sources with lines of sight that pass through or near to the superbubble associated with W4/IC 1805 with the Very Large Array at 6 cm. I will discuss Faraday rotation measure measurements for these sources and our efforts to understand the magnetic field in the dynamic environment of a superbubble.