90億光年外 J021659-044920 星系 巨大400萬光年噴流結構

[peter]

http://www.sciencedaily.com/releases/2015/11/151106113742.htm

Giant Metrewave Radio Telescope (GMRT)



400萬光年大  

http://astronomynow.com/2015/11/07/gmrt-discovers-giant-radio-galaxy-9-billion-light-years-away/


This is an optical image of J021659-044920 with radio lobes (in yellow-red) supimposed. The supermassive black hole in the red galaxy at the centre (zoomed-in inset) has led to the formation of the giant radio lobes. Image credit: Prathamesh Tamhane/Yogesh Wadadekar.

[peter]

3c 273 類星體 經測量長度有20萬光年

https://zh.wikipedia.org/wiki/3C_273



微類星體
https://zh.wikipedia.org/wiki/%E5%BE%AE%E9%A1%9E%E6%98%9F%E9%AB%94
微類星體是類星體的小型表親。其命名看得出來是源自類星體，而兩者間有些共同點：強烈且時變的無線電波放射，常表現成無線電波噴流(radio jet)，