So assume there are an unknown number of near-omnipotent/omniscient beings who have been confirmed to live inside of an area of space called the Active Galactic Nucleus (AGN). To provide a little more color:
- The AGN can belong to any galaxy, it need not be the Milky Way's galactic core.
- The beings inside the AGN require the intense gravity from accretion & extreme radiation to survive.
- The beings inside of the AGN send pulses of information at extreme intervals (usually pulses are >5M years apart.)
- These pulses contain what we would call "prophecies," in that each decoded pulse contains a prediction which happens with 100% observed accuracy.
So question time:
How would a spacefaring race with arbitrarily advanced technology attempt to make contact with these creatures? What sort of things would they try? What would be the largest limitation in their attempts to communicate?