親子觀星會

First Image of Black Hole Shadow and Jet Together 
https://skyandtelescope.org/astronomy-news/black-holes/first-image-of-black-hole-shadow-and-jet-together/

Ru-Sen Lu (Shanghai Astronomical Observatory) and an international team used a global network of radio dishes to peer deep into M87’s heart, following the galaxy’s 5,000-light-year-long plasma jet back to its source. The network is different than the one used by the Event Horizon Telescope project, albeit with some overlap (both in sites and in people).

The EHT observes at 1.3 mm, which enables astronomers to bypass the plasma haze hiding the black hole and detect the glow of material just outside it. The leviathan’s own gravity bends this glow into a ring around where it sits, invisible. But the array did not have enough telescopes to resolve both the ring and the jet at this wavelength.

(https://skyandtelescope.org/wp-content/uploads/M87_3.5mm_image_3x2-1536x1024.jpg)