Showing papers by "Indian Institute of Technology Ropar published in 2008"
24 Apr 2008
TL;DR: In this paper, the authors explored the nucleosynthesis and heating from neutron processes deeper in the NS Crust around 1011gcm−3 and showed that a single beta-stable species was evolved in an accreted parcel of matter in earlier calculations.
Abstract: Recently, Electron Captures (henceforth EC) into excited states of neutron‐rich nuclei were shown by the LANL‐Michigan State‐Mainz collaboration to result in Neutron Star (henceforth NS) Crust heating which was 4–5 times that of previous calculations. That result also highlighted the importance of a spread in X‐ray burst abundances over several mass chains which could contribute to substantial heating through large shell and sub‐shell gaps showing up in the excitation energy spectrum of the EC daughter. Such effects did not dominate when a single beta‐stable species was evolved in an accreted parcel of matter in earlier calculations. We are now exploring the nucleosynthesis and heating from neutron processes deeper in the NS Crust around 1011 gcm−3. Electron captures into excited states of neutron‐rich nuclei above neutron separation energies requires a Hauser‐Feshbach code to calculate the branchings between 1‐, 2‐, 3‐,…neutron emission rates in the stellar environment. Since the evolving composition has...
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