Other
Scientific paper
Oct 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000head....5.1105c&link_type=abstract
American Astronomical Society, HEAD Meeting #5, #11.05; Bulletin of the American Astronomical Society, Vol. 32, p.1197
Other
Scientific paper
The energy density of extragalactic CRs would reach nearly 1% of the local CRs if its spectrum is extrapolated back to GeV with the same spectral index Γ = -2.6. This implies an energy in CRs per galaxy within the galaxy walls, ~ 3 x 1059 ergs. The lack of an observed GZK cut-off implies a loss timescale of < 108 yr. This loss must be an energy independent loss to the galaxy voids. In a Hubble time the accelerated CR energy is then > 5 x 1061 ergs per galaxy. Only the 108 Msun black hole of each galaxy (2 x 1062 ergs) is a potential and feasible energy source. We describe a sequence of physical processes that leads to the formation of massive black holes and how large scale magnetic fields can be produced by an α - Ω dynamo using star-disk collisions within the accretion disk. As this dynamo saturates, magnetic fields are expelled away from the disk as a force-free helix. These stressed magnetic fluxes eventually populate the IGM and are confined in the galaxy walls by the infall pressure. Part of this magnetic energy will dissipate via reconnection process, from which UHECRs are produced. Another part of it, along with the CRs, escape into the galaxy voids, becoming the dark energy of the universe. (Supported by DOE.)
Colgate Sterling A.
Li Handong
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