A triple-star channel with two common envelope evolution phases produces merging black hole binaries with positive average χ_eff and a tail of negative values.
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3 Pith papers cite this work. Polarity classification is still indexing.
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astro-ph.HE 3years
2026 3representative citing papers
Higher-resolution MUSE data shows the optical torus in SNR E0102 as a multiphase cavity whose line ratios require coexisting shock and ionization conditions rather than any single-component model.