General Relativistic Effects in the Neutrino-driven Wind and [CLC][ITAL]r[/ITAL][/CLC]-Process Nucleosynthesis
Author(s) -
Christian Y. Cardall,
George M. Fuller
Publication year - 1997
Publication title -
the astrophysical journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.376
H-Index - 489
eISSN - 1538-4357
pISSN - 0004-637X
DOI - 10.1086/310838
Subject(s) - physics , supernova , neutrino , nucleosynthesis , ejecta , r process , nuclear physics , neutron star , baryon , astrophysics , neutron , radius , stellar nucleosynthesis , particle physics , computer security , computer science
We discuss general relativistic effects in the steady-state neutrino-driven``wind'' which may arise from nascent neutron stars. In particular, wegeneralize previous analytic estimates of the entropy per baryon $S$, the massoutflow rate $\dot M$, and the dynamical expansion time scale $\tau_{dyn}$. Weshow that $S$ increases and $\tau_{dyn}$ decreases with increasing values ofthe mass-to-radius ratio describing the supernova core. Both of these trendsindicate that a more compact core will lead to a higher number of neutrons periron peak seed nucleus. Such an enhancement in the neutron-to-seed ratio may berequired for successful r-process nucleosynthesis in neutrino-heated supernovaejecta.Comment: 10 pages including 3 figures, latex and aastex macros. Submitted to ApJ Letter
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