ESO: Black Hole Expelling a Powerful Jet (M87)

Find out the latest thinking about our universe.
User avatar
bystander
Apathetic Retiree
Posts: 21582
Joined: Mon Aug 28, 2006 2:06 pm
Location: Oklahoma

ESO: Black Hole Expelling a Powerful Jet (M87)

Post by bystander » Wed Apr 26, 2023 9:59 pm

Astronomers Image for the First Time a Black
Hole’s Shadow Together with a Powerful Jet

ALMA (ESO/NAOJ/NRAO) | 2023 Apr 26

First Direct Image of a Black
Hole Expelling a Powerful Jet

ESO Science Release | 2023 Apr 26
For the first time, astronomers have observed, in the same image, the shadow of the black hole at the centre of the galaxy Messier 87 (M87) and the powerful jet expelled from it. The observations were done in 2018 with telescopes from the Global Millimetre VLBI Array (GMVA), the Atacama Large Millimeter/submillimeter Array (ALMA), ... and the Greenland Telescope (GLT). Thanks to this new image, astronomers can better understand how black holes can launch such energetic jets.

Most galaxies harbour a supermassive black hole at their centre. While black holes are known for engulfing matter in their immediate vicinity, they can also launch powerful jets of matter that extend beyond the galaxies that they live in. Understanding how black holes create such enormous jets has been a long standing problem in astronomy. ...

The new image published today shows precisely this for the first time: how the base of a jet connects with the matter swirling around a supermassive black hole. The target is the galaxy M87, located 55 million light-years away in our cosmic neighbourhood, and home to a black hole 6.5 billion times more massive than the Sun. Previous observations had managed to separately image the region close to the black hole and the jet, but this is the first time both features have been observed together. ...

The image was obtained with the GMVA, ALMA and the GLT, forming a network of radio-telescopes around the globe working together as a virtual Earth-sized telescope. Such a large network can discern very small details in the region around M87’s black hole.

A ring-like accretion structure in M87 connecting its black hole and jet ~ Ru-Sen Lu et al
viewtopic.php?t=39338
viewtopic.php?t=41587
viewtopic.php?t=41817
Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk.
— Garrison Keillor