Thirty Years of Radio Observations of Type Ia SN 1972E and SN 1895B: Constraints on Circumstellar Shells
Thirty Years of Radio Observations of Type Ia SN 1972E and SN 1895B: Constraints on Circumstellar Shells
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DOI：
10.3847/1538-4357/ab6b2a
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发表时间：
2020-01
期刊：
影响因子：
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通讯作者：
Yvette Cendes;M. Drout;L. Chomiuk;S. Sarbadhicary
中科院分区：
文献类型：
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作者：
Yvette Cendes;M. Drout;L. Chomiuk;S. Sarbadhicary
我们在爆炸后9年到121年之间对附近（dL = 3.15 Mpc） Ia型超新星SN 1972E和SN 1895B进行了35年的存档观测。没有检测到射电发射，限制了它们的射电亮度为Lν，8.5GHz（104年），比最后一次共同包络演化和经历周期性新星的单一简并系统延迟-前提是系统已经处于新星期约104年，这样一个大（>1018厘米）的空腔已经被疏散。未来对其他中期Ia超新星的多时期观测将提供这些爆炸周围大尺度CSM的全面视图。
We have imaged 35 yr of archival Very Large Array observations of the nearby (dL = 3.15 Mpc) Type Ia supernovae SN 1972E and SN 1895B between 9 and 121 yr post-explosion. No radio emission is detected, constraining their radio luminosities to be Lν,8.5GHz 104 yr) delay from the last episode of common envelope evolution and single degenerate systems undergoing recurrent nova—provided that the system has been in the nova phase for ≳104 yr, such that a large (>1018 cm) cavity has been evacuated. Future multi-epoch observations of additional intermediate-aged SNe Ia will provide a comprehensive view of the large-scale CSM around these explosions.