These black holes would be smaller than the supermassive black hole that is thought to lurk at the very heart of the galaxy if this scenario is right, one consequence would be that pulsars should live longer the farther away they are from the dark matter–dense galactic center. At the far reaches of the Milky Way, for example, pulsars might live to ripe old ages; near the core, however, pulsars would be created and then quickly destroyed before they could age. “Nothing astrophysical predicts a very strong relation between the age of a pulsar and its distance from the center of a galaxy,” Linden says. “You would really see a stunning effect if this scenario held.” It is also possible, although perhaps not probable, that astronomers could observe a pulsar collapse into a black hole, verifying the theory. But once the black hole is created, it would be near impossible to detect: As dark matter and black holes are each unobservable, black holes made of dark matter would be doubly invisible
Posted on: Tue, 11 Nov 2014 23:18:16 +0000
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