Broken Angels (novel)
Morgan, Richard K. Broken Angels. London: Gollancz, 2003. Available in hardback, paperback, and an audiobook read by Todd McClaren. Sequel to Altered Carbon; followed by Woken Furies, q.v. in this section of the Wiki.
Efficiently and adequately summarized in the Wikipedia entry. See for theme of future war and weapons both futuristic and not (a featured "dirty" atomic bomb), and for a huge alien artifact in space, for which cf. and contrast especially Rendezvous with Rama and Rama II and consider for the theme of what Leonard Heldreth calls "In Search of the Ultimate Weapon: The Fighting Machine in Science Fiction Novels and Films."
The story deals briefly with what sounds like a variety of nanotechnology producing an AI swarm; for rather direct comparison and contrast, see Bruce Sterling's "Swarm" and the Stanislaw Lem's artificial insects.
In the background of the Altered Carbon stories, but explicit here, are absconded "Martians" (who may or may not have originated on Mars); cf. and contrast Frederik Pohl's Heechee stories in his Gateway series.
Note: The (initial?) trilogy would be "NC-17" in US film classification: adult literature in terms of explicit sex.
RDE, finishing, 14Aug19