Robuta

https://www.aanda.org/articles/aa/full_html/2022/02/aa40827-21/aa40827-21.html
Astronomy & Astrophysics (A&A) is an international journal which publishes papers on all aspects of astronomy and astrophysics
supermassive black holefirst directdynamicaldetectiondual
https://www.aanda.org/articles/aa/full_html/2018/04/aa31716-17/aa31716-17.html
Astronomy & Astrophysics (A&A) is an international journal which publishes papers on all aspects of astronomy and astrophysics
energy distributionrelativisticelectronskiloparsecscale