XXL Survey second series papers are published in a special issue of the Astronomy & Astrophysics



Results from the largest XMM-Newton observational program, The Ultimate XMM Extragalactic Survey, are published in another special issue of the Astronomy & Astrophysics. This is the second series of papers of the survey and includes the largest data release of the XXL. An open access issue of the A&A can be accessed here (Vol. 620).