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Are Neutron-Rich Elements Produced in the Collapse of Strange Dwarfs ?

G. F. Marranghello·J. A. de Freitas Pacheco
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Abstract

The structure of strange dwarfs and that of hybrid stars with same baryonic number is compared. There is a critical mass (M~0.24M_sun) in the strange dwarf branch, below which configurations with the same baryonic number in the hybrid star branch are more stable. If a transition occurs between both branches, the collapse releases an energy of about of 3x10^{50} erg, mostly under the form of neutrinos resulting from the conversion of hadronic matter onto strange quark matter. Only a fraction (~4%) is required to expel the outer neutron-rich layers. These events may contribute significantly to the chemical yield of nuclides with A>80 in the Galaxy, if their frequency is of about one per 1500 years.

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G. F. Marranghello, J. A. de Freitas Pacheco. 2005-10-31. Are Neutron-Rich Elements Produced in the Collapse of Strange Dwarfs ?. https://doi.org/10.1142/s0218271806007584

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