Sunday, 21 February 2016
New Worlds And A New Cosmos?
A rotating black hole has both an event horizon and an ergosphere. When two black holes meet, the energies released cause some gas clouds to exceed ergospheric escape velocity. Receding, the clouds hold together either because of magnetic bottle effects or because each has become the atmosphere surrounding a new planet-sized mass, as if the union of black holes had begotten worlds.
Meanwhile, during the microseconds of fusion, the ergospheres, the event horizons and spacetime are contorted:
"'For an instant, the gates stood open between entire universes.'
"'The hints alone should reveal a new cosmos to your minds...'" (p. 143)
Why "between" universes?
Is each singularity regarded as matching the singularity of a white hole in another universe?
(But the singularities were not uncovered during the collison.)
A new cosmos or a new understanding of this cosmos?
Either way, new worlds whether material or conceptual.
When Time Patrolman Manse Everard relates sagas and Eddic and skaldic poems to the Emperor Frederick in 1245alpha AD, the latter exults:
"'You open another whole universe!'" (The Shield Of Time, p. 396)
The Eddic universe is conceptual but certainly "other." I remember the imaginative impact the first time I read Encyclopedia articles about Norse mythology and about Buddhism. In the first, gods who will die; in the second, not a strange god but a compassionate man. This takes us away from black holes but it is all one in Poul Anderson's imagination.