A search for optical bursts from the rotating radio transient j1819−1458 with ultracam - ii. simultaneous ultracam-lovell telescope observations
Dhillon, V. S. Keane, E. F. Marsh, T. R. Stappers, B. W. Copperwheat, C. M. Hickman, R. D. G. Jordan, C. A. Kerry, P. Kramer, M. Littlefair, S. P.
Dhillon, V. S.
Keane, E. F.
Marsh, T. R.
Stappers, B. W.
Copperwheat, C. M.
Hickman, R. D. G.
Jordan, C. A.
Kerry, P.
Kramer, M.
Littlefair, S. P.
Publication Date
2011-05-18
Type
Article
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Citation
Dhillon, V. S. Keane, E. F.; Marsh, T. R.; Stappers, B. W.; Copperwheat, C. M.; Hickman, R. D. G.; Jordan, C. A.; Kerry, P.; Kramer, M.; Littlefair, S. P.; Lyne, A. G.; Mignani, R. P.; Shearer, A. (2011). A search for optical bursts from the rotating radio transient j1819−1458 with ultracam - ii. simultaneous ultracam-lovell telescope observations. Monthly Notices of the Royal Astronomical Society 414 (4), 3627-3632
Abstract
The rotating radio transient (RRAT) J1819-1458 exhibits similar to 3ms bursts in the radio every similar to 3 min, implying that it is visible for only similar to 1 s 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 mag fainter than the previous burst limit, which had no simultaneous radio observations.
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Oxford University Press (OUP)
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Attribution-NonCommercial-NoDerivs 3.0 Ireland