论文标题
AARTFAAC 60 MHz瞬变调查
The AARTFAAC 60 MHz transients survey
论文作者
论文摘要
我们报告了AARTFAAC宽场无线电调查的实验设置和整体结果，该调查包括在Zenith的50 $^\ Circ $内观察天空，带宽为3.2 $ \，$ MHz，以1 $ \，$ s的节奏为545 $ \，$ h。这产生了近400万张快照，每秒两个，平均为4800平方度，灵敏度约为60 $ \，$ jy。我们发现了两个暂时性事件人群，一个源自PSR $ \，$ b0950 $+$ 08，一次来自强烈的电离层镜头事件，以及一个用于外层次瞬态的强大候选者，峰值通量密度为$ 80 \ pm30 $$ \，$ jy，$ jy，$ jy，$ jy，$ jy和一项分散度量。 $ 73 \ pm3 \，\ Mathrm {〜pc〜cm^{ - 3}} $，我们还将强大的上限设置为每天1.1全套的上限，以使任何其他快速，明亮的瞬变率的其他人群的速度。最后，我们通过将我们的检测和限制与其他低频无线电瞬态调查进行比较来限制一些先前检测到的瞬态源类型。
We report the experimental setup and overall results of the AARTFAAC wide-field radio survey, which consists of observing the sky within 50$^\circ$ of Zenith, with a bandwidth of 3.2$\,$MHz, at a cadence of 1$\,$s, for 545$\,$h. This yielded nearly 4 million snapshots, two per second, of on average 4800 square degrees and a sensitivity of around 60$\,$Jy. We find two populations of transient events, one originating from PSR$\,$B0950$+$08 and one from strong ionospheric lensing events, as well as a single strong candidate for an extragalactic transient, with a peak flux density of $80\pm30$$\,$Jy and a dispersion measure of $73\pm3\,\mathrm{~pc~cm^{-3}}$, We also set a strong upper limit of 1.1 all-sky per day to the rate of any other populations of fast, bright transients. Lastly, we constrain some previously detected types of transient sources by comparing our detections and limits with other low-frequency radio transient surveys.
