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CONFIRMATION OF THE ELECTRON CYCLOTRON MASER INSTABILITY AS THE DOMINANT SOURCE OF RADIO EMISSION FROM VERY LOW MASS STARS AND BROWN DWARFS
We report on radio observations of the M8.5 dwarf LSR J1835+3259 and the L3.5 dwarf 2MASS J00361617+1821104, which provide the strongest evidence to date that the electron cyclotron maser instabilityExpand
PERIODIC BURSTS OF COHERENT RADIO EMISSION FROM AN ULTRACOOL DWARF
We report the detection of periodic (p = 1.96 hr) bursts of extremely bright, 100% circularly polarized, coherent radio emission from the M9 dwarf TVLM 513-46546. Simultaneous photometric monitoringExpand
Rotational Modulation of the Radio Emission from the M9 Dwarf TVLM 513–46546: Broadband Coherent Emission at the Substellar Boundary?
The Very Large Array was used to observe the ultracool rapidly rotating M9 dwarf TVLM 513-46546 simultaneously at 4.88 and 8.44 GHz. The radio emission was determined to be persistent, variable, andExpand
A mini-survey of ultracool dwarfs at 4.9 GHz
Context. A selection of ultracool dwarfs are known to be radio active, with both gyrosynchrotron emission and the electron cyclotron maser instability being given as likely emission mechanisms. Expand
Phase connecting multi-epoch radio data for the ultracool dwarf TVLM 513-46546
Context. Radio data obtained for the ultracool dwarf TVLM 513-46546 has indicated a rotation period of ≈1.96 h via regular radio pulses, but how stable is this period. This has major implicationsExpand
Magnetospherically driven optical and radio aurorae at the end of the stellar main sequence
TLDR
Radio and optical spectroscopic observations of an object at the end of the stellar main sequence, located right at the boundary between stars and brown dwarfs, are reported, from which radio and optical auroral emissions both powered by magnetospheric currents are detected. Expand
Volume-limited radio survey of ultracool dwarfs
Aims. We aim to increase the sample of ultracool dwarfs studied in the radio domain to allow a more statistically significant und erstanding of the physical conditions associated with theseExpand
Rotational Modulation of M/L Dwarfs due to Magnetic Spots
We find periodic I-band variability in two ultracool dwarfs, TVLM 513-46546 and 2MASS J00361617+1821104, on either side of the M/L dwarf boundary. Both of these targets are short-period radioExpand
Electron-beam-induced Radio Emission from Ultracool Dwarfs
We present the numerical simulations for an electron-beam-driven and loss-cone-driven electron-cyclotron maser (ECM) with different plasma parameters and different magnetic field strengths for aExpand
GALEX high time-resolution ultraviolet observations of dMe flare events
Aims. We present near ultraviolet (NUV: 1750–2800 A) and far ultraviolet (FUV: 1350–1750 A) light-curves for flares on 4 nearby dMe-type stars (GJ 3685A, CR Dra, AF Psc and SDSS J084425.9+513830.5)Expand
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