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Comment by Tloewald | Hacker News Reader

350h is a lifespan, and you're quoting a speculative paper. I haven't read the story extract, but I assume the plan would be to bleed matter into the micro black hole to maintain it. (Arthur C Clarke posited the same concept 40 odd years ago in his Imperial Earth novels.)

I assume your point is that a GeV is a minuscule amount of energy, which isn't going to push 130kT around at any speed.

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  you're quoting a speculative paper.

Hawking radiation has never been directly observed, but it is generally presumed to exist.

  I haven't read the story extract, but I assume the plan 
  would be to bleed matter into the micro black hole to 
  maintain it.

Read the story. In context, the character is talking about how small a natural, primordial black hole can be. There is an obvious lower bound, due to Hawking radiation.

  I assume your point is that a GeV is a minuscule amount of 
  energy, which isn't going to push 130kT around at any speed.

Read the paper. That's the pseudotemperature of the event horizon. It's so hot that it's glowing largely in ultraenergetic gamma rays. The total power radiated by a .32 attometre black hole is 5,519 petawatts.

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