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Radio Emission from Binary Ultracool Dwarf Systems

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arxiv 2206.01754 v1 pith:5BUCAPYU submitted 2022-06-03 astro-ph.SR astro-ph.EPastro-ph.HE

classification astro-ph.SRastro-ph.EPastro-ph.HE
keywords systemsbinarydwarfultracoolemissionradionon-auroralaurorae
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Well-characterized binary systems will provide valuable opportunities to study the conditions that are necessary for the onset of both auroral and non-auroral magnetospheric radio emission in the ultracool dwarf regime. We present new detections of non-auroral "quiescent" radio emission at 4-8 GHz of the three ultracool dwarf binary systems GJ 564 BC, LP 415-20, and 2MASS J21402931+1625183. We also tentatively detect a highly circularly polarized pulse at 4-6 GHz that may indicate aurorae from GJ 564 BC. Finally, we show that the brightest binary ultracool dwarf systems may be more luminous than predictions from single-object systems.

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Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Volcanic Satellites and Ion Escape in the Magnetospheres of Ultra-Cool and Brown Dwarf Stars

    astro-ph.EP 2026-07 conditional novelty 6.0 of 10

    Plasma feeding the radio magnetosphere of LSR J1835+3259 could be sourced by a weak stellar ionospheric outflow or, more plausibly, by a tidally heated Io-like volcanic satellite orbiting within ~10 stellar radii.

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