Radio Emission from Binary Ultracool Dwarf Systems
arXiv:2206.01754 · doi:10.3847/1538-4357/ac660b
Abstract
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.
References in corpus (25)
- The NumPy array: a structure for efficient numerical computation
- Confirmation of the Electron Cyclotron Maser Instability as the Dominant Source of Radio Emission from Very Low Mass Stars and Brown Dwarfs
- Radio Observations of a Large Sample of Late-M, L, and T Dwarfs: The Distribution of Magentic Field Strengths
- Periodic Bursts of Coherent Radio Emission from an Ultracool Dwarf
- Discovery of a young planetary mass companion to the nearby M dwarf VHS J125601.92-125723.9
- Rotational Modulation of the Radio Emission from the M9 Dwarf TVLM 513-46546: Broadband Coherent Emission at the Substellar Boundary?
- Bayesian Ages for Early-Type Stars from Isochrones Including Rotation, and a Possible Old Age for the Hyades
- Strong dipole magnetic fields in fast rotating fully convective stars
- BOSS Ultracool Dwarfs I: Colors and Magnetic Activity of M and L dwarfs
- The Arecibo Detection of the Coolest Radio-flaring Brown Dwarf
- Simultaneous Multi-Wavelength Observations of Magnetic Activity in Ultracool Dwarfs. II. Mixed Trends in VB10 and LSR1835+32 and the Possible Role of Rotation
- A Panchromatic View of Brown Dwarf Aurorae
- Simultaneous Multi-Wavelength Observations of Magnetic Activity in Ultracool Dwarfs. I. The Complex Behavior of the M8.5 Dwarf TVLM513-46546
- Simultaneous Multiwavelength Observations of Magnetic Activity in Ultracool Dwarfs. IV. The Active, Young Binary NLTT 33370 AB (=2MASS J13142039+1320011)
- Discovery of Radio Emission from the Tight M8 Binary: LP 349-25
- Quasi-Quiescent Radio Emission from the First Radio-Emitting T Dwarf
- The Second Arecibo Search for 5 GHz Radio Flares from Ultracool Dwarfs
- Steady and Transient Radio Emission from Ultracool Dwarfs
- Auroral Radio Emission from Ultracool Dwarfs: a Jovian Model
- Ultracool Dwarfs Survey. VI. White light superflares observed on an L5 dwarf and flare rates of L dwarfs
- Rotation periods and photometric variability of rapidly rotating ultra-cool dwarfs
- Detection of a giant white-light flare on an L2.5 dwarf with the Next Generation Transit Survey
- Calibrating Ultracool Dwarfs: Optical Template Spectra, Bolometric Corrections, and Values
- WISEP J060738.65+242953.4: A Nearby. Pole-On L8 Brown Dwarf with Radio Emission
- Multi-Epoch VLBI of L Dwarf Binary 2MASS J0746+2000AB: Precise Mass Measurements and Confirmation of Radio Emission from Both Components