【 在 akn (akn) 的大作中提到: 】
: 1.為何利用無線電觀測星系的時候,都是利用QSO來作流量和圖像的修正?
1. The emission from QSOs is very strong at all radio wavelengths.
2. They are ideal point sources in most cases.
3. You can find QSOs in almost all directions, they are not confined
to galactic plane or zodiacal plane.
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※ 來源:‧南十字 crux.chem.nsysu.edu.tw‧[FROM: galileo.IfA.Hawaii.E]