GBT21B-237

A Multiband Mini-survey for Exo-auroral Radio Emission from Ultracool Dwarfs

Abstract

Ultracool dwarfs (UCDs) span stellar and planetary regimes in terms of their magnetic properties. Recent surveys of these objects have detected new sources of highly circularly polarized, high brightness temperature radio emissions that have altered our perception of their properties. These radio emissions have demonstrated that magnetic activity is not uncommon among UCDs, that they are powerful radio-emitters, and that they maintain kG-strength magnetic fields. Our proposed survey will search for lower frequency emission from a selection of the coolest UCDs with the aim of measuring the magnetic field strengths of the targets with masses and temperatures similar to those found among exoplanets. These results will guide future efforts and expectations of exoplanet magnetism.

Investigators

Name	Institution
Matthew Route *	Purdue University
Ryan Lynch	Green Bank Observatory
Alex Wolszczan	Pennsylvania State University

* indicates the PI