Surveying Magnetic Activity in L and T Brown Dwarfs

Details Surveying Magnetic Activity in L and T Brown Dwarfs Surveying Magnetic Activity in L and T Brown Dwarfs

Sep 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007cxo..prop.2328a&link_type=abstract

Chandra Proposal ID #09200200

Physics

Chandra Proposal Id #09200200

Scientific paper

We propose to continue our investigation of magnetic activity in L and T brown dwarfs in the X-rays with Chandra and in the radio with the VLA and ATCA. We propose to observe three brown dwarfs in the largely unexplored late-L and T regimes with Chandra. Our targets are close, old (~1 Gyr) brown dwarfs, whose Halpha emission should not be contaminated by any accretion mechanism as in young brown dwarfs. With this Chandra proposal, we aim to detect X-rays in brown dwarfs during quiescence or flares. Simultaneous radio observations with the VLA and ATCA are requested as well. This investigation will help us to obtain a census of magnetic activity in L and T brown dwarfs and to better understand the efficiency to generate magnetic fields at the bottom of the main sequence.

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