galaxy mergers and AGN activity

[notFritzArgelander]

https://phys.org/news/2020-05-mergers-g ... -core.html

[helicon]

The research team used a machine-learning algorithm to recognize mergers. It provided a sample that is about an order of magnitude larger than those in previous studies, making the correlation much more reliable. "We have built a network to train the system to recognize mergers in a lot of pictures," says first author Fangyou Gao. "This enables us to use a large sample of two telescope surveys with tens of thousands of galaxies. AGNs are relatively easy to recognize based on their spectrum. But mergers must be classified from images, which is typically a human's job. With machine learning, we can now have computers do this for us.

"

Very interesting notFritz. Thanks.

[Graeme1858]

Good article.

That picture of the galaxy with the huge jets reminds me of a similar picture we were shown when studying this stuff in a galaxy evolution lecture. I was blown away at the time by the size and the power and the violence of such a thing!

I still am!

Regards

Graeme