Non-LTE Ionization Modeling for Helium and Strontium in Neutron Star Merger Ejecta

Name: Non-LTE Ionization Modeling for Helium and Strontium in Neutron Star Merger Ejecta
Uploaded: 2026-10-02T03:50:52.043867+00:00
Duration: 947 s
Description: Researchers developed non-LTE models for Helium and Strontium ionization in AT2017gfo ejecta to explain a 1 µm spectral feature. The study found that about 1% of He or 1–10% of Sr mass fraction is present at high velocities. This supports BNS mergers as r-process sources under low electron fraction and entropy conditions.

Researchers developed non-LTE models for Helium and Strontium ionization in AT2017gfo ejecta to explain a 1 µm spectral feature. The study found that about 1% of He or 1–10% of Sr mass fraction is present at high velocities. This supports BNS mergers as r-process sources under low electron fraction and entropy conditions.

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