G332.5-5.6, a new Galactic supernova remnant

被引：12
|
作者：
Reynoso, E. M.
Green, A. J.
机构：
[1] IAFE, RA-1428 Buenos Aires, DF, Argentina
[2] Univ Buenos Aires, Dept Fis, Fac Ciencias Exactas & Nat, RA-1053 Buenos Aires, DF, Argentina
[3] Univ Sydney, Sch Phys, Sydney, NSW 2006, Australia
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2007年 / 375卷 / 01期
关键词：
polarization; ISM : individual : G332.5-5.6; supernova remnants; radio continuum : general;
D O I：
10.1111/j.1365-2966.2006.11264.x
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present radio observations of the source G332.5-5.6, a candidate supernova remnant (SNR). Observations have been performed with the Australia Telescope Compact Array (ATCA) at two frequencies, 1.4 and 2.4 GHz. Our results confirm that G332.5-5.6 is an SNR, with a spectral index alpha = -0.7 +/- 0.2 for the whole source and an average fractional polarization of similar to 35 per cent at 2.4 GHz. The central component is coincident with extended X-ray emission, and the distance to the SNR is estimated to be similar to 3.4 kpc. Based on its radio and X-ray morphology, this SNR should be classified as a composite, and we suggest that it belongs to a trident-shaped subclass like G291.0-0.1.
引用
收藏
页码：92 / 98
页数：7
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