History of Bamberga

Bamberga is a lore entry triumph (unlocked by reading/collecting the lore entry) from the book The Dreaming City, added with Forsaken (2018).

Lore

Per Ishtar Collective, it is a classified report on the "Aphelion Incidents" near the Reef. Event 2PAL-A: Paladin Nolg saw a glowing creature on his ship before radiation spikes; the ship was decommissioned. Event 2PAL-B: the station Amestris sent six distress calls, mentioning "the stalking core"; rescuers found radioactive contamination and no survivors. The document appears incomplete.

How the entry is unlocked in-game (the specific objective) is unconfirmed by the sources I opened.