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DISCOVERY OF TWO RADIO TRANSIENTS AT A HIGH GALACTIC LATITUDE IN A 1.4 GHz DRIFT-SCAN SURVEY

机译:在1.4 GHz漂移扫描调查中在高银河纬度上发现两个无线电瞬变

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We report two new radio transients at high Galactic latitude, WJN J0951+3300 (α = 09h51m22s ± 10s, δ = 33°00' ± 0°.4, b = 50°542) and WJN J1039+3300 (α = 10h39m26s ± 10s, δ = 33°00' ± 0°.4, b = 60°585), 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.
机译:我们报告了两个在高银河纬度上的新的无线电瞬变:WJN J0951 + 3300(α= 09h51m22s±10s,δ= 33°00'±0°.4,b = 50°542)和WJN J1039 + 3300(α= 10h39m26s± 10s,δ= 33°00'±0°.4,b = 60°585),通过早稻田那须脉冲星天文台在1.4 GHz处的干涉漂移扫描观察发现。 WJN J0951 + 3300于2006年1月12日在UT于16:49:32检测到,通量密度约为1760.5±265.9 mJy,WJN J1039 + 3300于2006年1月18日在UT于17:13:32检测到了通量密度约为2242.5±228.7 mJy。他们俩都持续了很短的时间(≤2天)。在先前的研究中,WJN无线电瞬变的分布是各向同性的。在重新评估了log N-log S关系并添加了本文中报告的两个新对象之后,我们发现该斜率与–1.5的斜率和先前的结果一致。此外,尽管WJN无线电瞬变有多个对应物,但我们发现WJN J0951 + 3300的位置误差内的类星体对应物之一可能是大声类星体。我们已经讨论了WJN J0951 + 3300是否可能属于这种类星体。

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