Poster Abstracts

Name/Affiliation:  Melodie Kao (Caltech)

Title:  Auroral Radio Emission from Late L and T Dwarfs: A New Constraint on Dynamo Theory in the Substellar Regime

We have observed 6 late L and T dwarfs with the newly upgraded Jansky VLA to investigate the presence of quiescent or pulsed radio emission, associated with large-scale auroral currents. We present measurements of surface magnetic fields in the mid-L to late-T spectral range, providing the first firm constraints on dynamo theory in the mass gap occupied by low mass brown dwarfs.