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

Ben Burningham, M. Hardcastle, J. D. Nichols, S. L. Casewell, S. P. Littlefair, Craig R. Stark, M. R. Burleigh, S. Metchev, M. E. Tannock, R. J. van Weeren, W. L. Williams, G. A. Wynn

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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 150649.97+702736.0, and WISEPA J174124.26+255319.5.We have placed robust 3s 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 hours 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.
Original languageEnglish
Pages (from-to)2202–2209
Number of pages8
JournalMonthly Notices of the Royal Astronomical Society
Volume463
Issue number2
Early online date19 Aug 2016
DOIs
Publication statusPublished - 1 Dec 2016

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Burningham, B., Hardcastle, M., Nichols, J. D., Casewell, S. L., Littlefair, S. P., Stark, C. R., Burleigh, M. R., Metchev, S., Tannock, M. E., van Weeren, R. J., Williams, W. L., & Wynn, G. A. (2016). A LOFAR mini-survey for low-frequency radio emission from the nearest brown dwarfs. Monthly Notices of the Royal Astronomical Society, 463(2), 2202–2209. https://doi.org/10.1093/mnras/stw2065