A search for young Galactic supernova remnants

A search for young Galactic supernova remnants
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寻找年轻的银河超新星遗迹

DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
A. Green
A. Green
中科院分区：
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文献类型：
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作者：
Z. Misanovic;L. Cram;A. Green

文献摘要

被引文献

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莫隆格洛银河平面巡天（MGPS）中选出了八个小直径射电源的样本，作为年轻银河超新星遗迹的候选者。这些源已在 IRAS 和中程空间实验红外数据库中被识别，并使用澳大利亚望远镜紧凑阵列 (ATCA) 在 H107α 无线电重组线 (RRL) 中成像。其中七个源显示出高比例的红外与无线电连续通量密度和/或可检测的 RRL，并且几乎可以肯定是 H II 区域。根据其相对较弱的红外发射、陡峭的无线电频谱和可能的 X 射线发射，一个源（G282.8−1.2）被确定为可能的新年轻银河系超新星遗迹。所采用的区分热和非热银河射电源的方法似乎很有前途，并且可以有效地应用于 MGPS 中列出的 100 多个小直径源。
A sample of eight small-diameter radio sources has been selected from the Molonglo Galactic Plane Survey (MGPS) as candidates for young Galactic supernova remnants. The sources have been identified in the IRAS and Midcourse Space Experiment infrared data bases and imaged in the H107α radio recombination line (RRL) using the Australia Telescope Compact Array (ATCA). Seven of the sources display high ratios of infrared-to-radio-continuum flux density and/or detectable RRLs and are almost certainly H II regions. One source (G282.8−1.2) is identified as a possible new young Galactic supernova remnant, based on its relatively weak infrared emission, steep radio spectrum, and possible X-ray emission. The adopted method for distinguishing thermal and non-thermal Galactic radio sources seems promising and could be fruitfully applied to more than 100 small-diameter sources listed in the MGPS.