A LOFAR mini-survey for low-frequency radio emission from the nearest brown dwarfs

2016/08/12 by Ben Burningham, M. J. Hardcastle, M. Hardcastle +13
Physics and Astronomy · #Astronomy #Astrophysics #Astrophysics and Star Formation Studies #Brown dwarf #Flux (metallurgy) #Gamma-ray bursts and supernovae #LOFAR #Low frequency #Physics #Radio astronomy #Radio telescope #Rotation (mathematics) #Stars #Stellar, planetary, and galactic studies #astro-ph.EP #astro-ph.SR

paper · pdf · doi:10.1093/mnras/stw2065

9 pages. MNRAS accepted

arxiv created 2016/08/12 · openalex publication_date 2016/08/19 · arxiv updated 2016/08/31 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We have conducted a mini-survey for low-frequency radio emission from some of the closest brown dwarfs to the Sun with rapid rotation rates: SIMP J013656.5+093347, WISEPC J150649.97+702736.0 and WISEPA J174124.26+255319.5. We have placed robust 3σ upper limits on the flux density in the 111–169 MHz frequency range for these targets: WISE 1506: <0.72 mJy; WISE 1741: <0.87 mJy; SIMP 0136: <0.66 mJy. At 8 h of integration per target to achieve these limits, we find that systematic and detailed study of this class of object at LOFAR frequencies will require a substantial dedication of resources.

Citations

• Origin of the main auroral oval in Jupiter's coupled magnetosphere–ionosphere system
• Methane and ammonia in the near-infrared spectra of late-T dwarfs
• Auroral radio emissions at the outer planets: Observations and theories
• Radio Observations of a Large Sample of Late M, L, and T Dwarfs: The Distribution of Magnetic Field Strengths
• The properties of the T8.5p dwarf Ross 458C
• Rotational Modulation of the Radio Emission from the M9 Dwarf TVLM 513−46546: Broadband Coherent Emission at the Substellar Boundary?
• LOFAR FACET CALIBRATION

Cited by

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