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.
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