A search for optical bursts from the rotating radio transient J1819-1458 with ULTRACAM - II. Simultaneous ULTRACAM-Lovell Telescope observations A search for optical bursts from RRAT J1819
A search for optical bursts from the rotating radio transient J1819-1458 with ULTRACAM - II. Simultaneous ULTRACAM-Lovell Telescope observations A search for optical bursts from RRAT J1819
复制标题
使用 ULTRACAM - II 从旋转射电瞬变 J1819-1458 中搜索光突发。
DOI：
10.1111/j.1365-2966.2011.18663.x
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发表时间：
2011
影响因子：
4.8
通讯作者：
Dhillon V
中科院分区：
文献类型：
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作者：
Dhillon V
旋转射电瞬变(RRAT)J1819-1458在射电中每3分钟出现一次~3ms的爆发，这意味着它每天只有~1次可见。假设光学光的行为类似，由于天空光子的积累，长时间曝光的场将相对不敏感。探测J1819-1458的光发射的一个更好的方法是在射电观测的同时使用高速光学相机进行观测，并只添加那些与色散校正的射电爆发重合的光学帧。我们给出了利用ULTRACAM和Lovell望远镜同时观测的搜索结果。我们在J1819-1458中没有发现亮度高于I‘=19.3(5西格玛极限)的光爆发的证据。这比之前没有同步射电观测的爆发极限弱了近3等。
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.