DISCOVERY OF TWO RADIO TRANSIENTS AT A HIGH GALACTIC LATITUDE IN A 1.4 GHz DRIFT-SCAN SURVEY
DISCOVERY OF TWO RADIO TRANSIENTS AT A HIGH GALACTIC LATITUDE IN A 1.4 GHz DRIFT-SCAN SURVEY
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在 1.4 GHz 漂移扫描调查中发现高银河系的两次无线电瞬变
DOI：
10.1088/0004-637x/704/1/652
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
S. Nakagawa
中科院分区：
文献类型：
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作者：
K. Niinuma;T. Daishido;N. Matsumura;K. Takefuji;M. Kuniyoshi;K. Asuma;S. Kida;T. Tanaka;T. Aoki;S. Ishikawa;K. Hirano;H. Uehara;S. Nakagawa
我们报告了在银河系高纬度WJN J 0951 +3300上的两个新的射电瞬变现象（α = 09 h 51 m 22 s ± 10 s，δ = 33°00′ ± 0°.4，B = 50°54.′2）和WJNJ1039 +3300（α = 10 h 39 m 26 s ± 10 s，δ = 33°00′ ± 0°.4，B = 60°58.′5），这是由早稻田那须脉冲星天文台在1.4 GHz的干涉漂移扫描观测中探测到的。WJN J 0951 +3300在2006年1月12日16：49：32 UT被探测到，通量密度约为1760.5 ± 265.9 mJy，WJN J1039+3300在2006年1月18日17：13：32 UT被探测到，通量密度约为2242.5 ± 228.7 mJy。这两次都持续了很短的时间（12天）。WJN无线电瞬变的分布是各向同性的可能性在以前的研究中提出。在加入本文报道的两个新天体后，重新评估log N-log S关系，我们发现斜率与-1.5的斜率和以前的结果一致。此外，虽然有几个对应的WJN无线电瞬变，我们发现，在WJN J 0951 +3300的位置误差的类星体对应之一可能是一个无线电响亮的类星体。我们已经讨论过WJN J 0951 +3300是否可能是这个类星体的起源。
We report two new radio transients at high Galactic latitude, WJN J0951+3300 (α = 09h51m22s ± 10s, δ = 33°00′ ± 0°.4, b = 50°54.′2) and WJN J1039+3300 (α = 10h39m26s ± 10s, δ = 33°00′ ± 0°.4, b = 60°58.′5), which were detected by interferometric drift-scan observations at 1.4 GHz at the Waseda Nasu Pulsar Observatory. WJN J0951+3300 was detected at 16:49:32 UT on 2006 January 12 with the flux density of approximately 1760.5 ± 265.9 mJy, and WJN J1039+3300 was detected at 17:13:32 UT on 2006 January 18 with the flux density of approximately 2242.5 ± 228.7 mJy. Both of them lasted for a short duration (⩽2 days). The possibility that the distribution of the WJN radio transients is isotropic was suggested in a previous study. Having re-evaluated the log N–log S relation with the addition of the two new objects reported in this paper, we find that the slope is consistent with a slope of −1.5 and the previous result. Additionally, although there are several counterparts to WJN radio transients, we found that one of the quasar counterparts within the positional error of WJN J0951+3300 could be a radio-loud quasar. We have discussed whether or not WJN J0951+3300 could be of this quasar origin.
那须天文台的自动射电爆发搜索系统
DOI：
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发表时间：
2006
期刊：
Publications of the Astronomical Society of the Pacific Vol.118, N844
影响因子：
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作者：
M.Kuniyoshi;T.Daishido;K.Asuma;Matsumura;Takefuji;K.Niinuma
通讯作者：
K.Niinuma