Locating an unknown source of radiation in a heterogeneous environment (2019)

Original title "Bayesian Parameter Estimation for the Localization of a Radioactive Source in a Heterogeneous Urban Environment" compressed to fit within title limits.

Author was inspired to write their PhD dissertation on radiation source search due to the Goiânia incident. Thank you to them for sharing this with us.

Goiânia Accident - https://news.ycombinator.com/item?id=49202635 - August 2026

But can it find the Tesseract?

Related to this, is it normal that radioactivity detector are not everywhere?