in the sense of regimes? What does it mean? in the sense of conditions?

Why did author want to use the word regime here?

Context:

Conversely, in the 1970s, Hawking also showed that black holes can slowly shrink, spewing out 'Hawking radiation'. In that case, the event horizon would, in theory, become smaller than the apparent horizon. Hawking’s new suggestion is that the apparent horizon is the real boundary. “The absence of event horizons means that there are no black holes — in the sense of regimes from which light can't escape to infinity,” Hawking writes.

More:
http://www.nature.com/news/stephen-hawking-there-are-no-black-holes-1.14583