巨大射电源QSO J0443的射电连续谱观测
Radio-continuum Observations of a Giant Radio Source QSO J0443.8-6141
摘要：
我们发现了一个巨大的双瓣（瓣核瓣）射电连续结构与类星体J0443.8-6141在z=0.72。这颗类星体最初是在对ROSAT全天巡天来源的无线电和光学频率样本进行跟踪时发现的。类星体J0443.8 - 6141的线性尺寸约为0.77 Mpc，被归类为巨射电源（GRS），根据其物理性质，我们将其归类为FR II射电星系。需要高分辨率的观测来可靠地识别GRS;下一代南天射电和光学巡天对增加这些天体的样本至关重要。
英文摘要：
We report the discovery of a giant double-lobed (lobe-core-lobe) radio-continuum structure associated with QSO J0443.8-6141 at z=0.72. This QSO was originally identified during the follow-up of a sample of ROSAT All Sky Survey sources at radio and optical frequencies. With a linear size of ~0.77 Mpc, QSO J0443.8-6141 is classified as a giant radio source (GRS); based on its physical properties, we classify QSO J0443.8-6141 as a FR II radio galaxy. High-resolution observations are required to reliably identify GRSs; the next generation of southern-sky radio and optical surveys will be crucial to increasing our sample of these objects.
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