The expansion of the radio remnant of the supernova of 1006 AD
The expansion of the radio remnant of the supernova of 1006 AD
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DOI：
10.1086/116748
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发表时间：
1993-10
期刊：
影响因子：
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通讯作者：
D. Moffett;W. Goss;S. Reynolds
中科院分区：
文献类型：
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作者：
D. Moffett;W. Goss;S. Reynolds
我们将SN 1006 AD的残留物与1370年和1665 MHz的国家射电天文学阵列相连在此期间的八年中发生。 r∞t0.48±0.13，与塞多夫膨胀一致，或者与向前/反向电击对移动到恒定密度的材料中。
We have reobserved the remnant of SN 1006 AD with the Very Large Array of the National Radio Astronomy Observatory at 1370 and 1665 Mhz. We compare the resulting images with those reconstructed from observations made in 1983-1984 by Reynolds & Gilmore and find that expansion has occurred in the eight intervening years. The mean expansion in this period is 3.5±1 arcsec, implying an expansion rate of 0.049% yr −1 or R∞t 0.48±0.13 , consistent with Sedov expansion, or with a forward/reverse shock pair moving into constant-density material. There is some evidence that the expansion rate is not uniform around the shell, being slightly smaller in the southwest quadrant