A search for optical bursts from RRAT J1819-1458: II. Simultaneous   ULTRACAM-Lovell Telescope observations
  The Rotating RAdio Transient (RRAT) J1819-1458 exhibits ~3 ms bursts in the radio every ~3 min, implying that it is visible for only ~1 per day. Assuming that the optical light behaves in a similar manner, long exposures of the field would be relatively insensitive due to the accumulation of sky photons. A much better way of detecting optical emission from J1819-1458 would then be to observe with a high-speed optical camera simultaneously with radio observations, and co-add only those optical frames coincident with the dispersion-corrected radio bursts. We present the results of such a search, using simultaneous ULTRACAM and Lovell Telescope observations. We find no evidence for optical bursts in J1819-1458 at magnitudes brighter than i'=19.3 (5-sigma limit). This is nearly 3 magnitudes fainter than the previous burst limit, which had no simultaneous radio observations. 
V. S. Dhillon, E. F. Keane, T. R. Marsh, B. W. Stappers, C. M.   Copperwheat, R. D. G. Hickman, C. A. Jordan, P. Kerry, M. K...
astro-ph.SR astro-ph.HE