3 papers
astro-ph.HE2026
Phase-Resolved Ultra-High-Energy Emission Defines an Energetic Boundary for Compact-Object Engines and Dense-Matter Structure
Marlon M. S. Mendes, Cesar H. Lenzi
We show that phase-resolved ultra-high-energy emission from LS I +61 303 defines a critical energetic boundary linking the compact-object engine, circumstellar interaction depth, a…
astro-ph.HE2026
Reconciling GW170817 and GW190814 with a Nonmonotonic Sound-Speed Equation of State
Marlon M. S. Mendes, Odilon Lourenço da Silva Filho, César H. Lenzi
We show that the GW170817-GW190814 tension can be reconciled within General Relativity by a structured causal EoS basin found with a Constrained Evolutionary TOV Discovery pipeline…
astro-ph.HE2026
Certified Uncertainty for Surrogate Models of Neutron Star Equations of State via Mondrian Conformal Prediction
Marlon M. S. Mendes, Roberta Duarte Pereira, Mariana Dutra da Rosa Louren +1
We present a multitask surrogate for neutron-star equations of state (EoSs) that delivers \emph{distribution-free}, certified uncertainty via split conformal prediction (CP) and it…