GRB1 - Inner Engine: Symmetries and Spectra of Short GRBs |
Speaker_ |
Page, Don |
Talk _ |
No Astrophysical Dyadospheres |
Abstract _ |
Ruffini and his collaborators have proposed a model for gamma ray bursts that invokes a `dyadosphere,' a macroscopic region of spacetime with rapid Schwinger pair production, where the electric field exceeds the critical electric field value m^2/e (with electron mass m and charge -e). Here it is shown how pair production itself would prevent the astrophysical formation of dyadospheres. Pair production is a self-regulating process that would discharge a growing electric field (say from a hypothetical collapsing charged stellar core) before it reached 6% of the minimum dyadosphere value, keeping the pair production rate more than 26 orders of magnitude below the dyadosphere value, and the efficiency well below 0.1%. |