That would depend on how large the asteroid is, and in how many pieces it would be 'disintegrated'? The collision ejecta don't do this because they are hot from

That would depend on how large the asteroid is, and in how many pieces it would be 'disintegrated'? The collision ejecta don't do this because they are hot from the collision alone, it's their re-entry heat which produces the pulse. Now some massive swarm of space pebbles should do the same, given it's large enough? Ahw, so many shooting stars! And then you feel the heat.