Michael Gemar on Nostr: If it’s not too much trouble, can you explain “a stationary chunk of matter ...

If it’s not too much trouble, can you explain “a stationary chunk of matter doesn’t emit Hawking radiation” in context of black holes? Does “stationary” mean “non-rotating” (so non-rotating black holes don’t emit Hawking radiation) or does this phrase exclude black holes, or have I completely misunderstood?