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Properties of the Object HESS J1731-347 as a Twin Compact Star

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arxiv 2504.00240 v2 pith:OLWTPECL submitted 2025-03-31 astro-ph.HE astro-ph.SRhep-phnucl-th

Properties of the Object HESS J1731-347 as a Twin Compact Star

classification astro-ph.HE astro-ph.SRhep-phnucl-th
keywords compactpropertiesstartwinhessj1731-347objectagreement
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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By consideration of the Compact object HESS J1731-347 as a hybrid twin compact star, i.e., a more compact star than its hadronic twin of the same mass, its stellar properties are derived. Besides showing that the properties of compact stars in this work are in good agreement with state-of-the-art constraints both from measurements carried out in laboratory experiments as well as by multi-messenger astronomy observations, the realization of an early strong hadron-quark first order phase transition as implied by the twins is discussed.

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    astro-ph.HE 2026-07 reject novelty 4.0

    The paper claims a radius precision of ~0.2 km is enough to extract most Bayesian information for identifying twin neutron stars, but its own distinguishability and entropy analyses suggest notable gains remain down t...