Heavy ion collisions in the 1A GeV regime: how well do we join up to astrophysics?

TL;DR

This paper discusses the challenges and methods of using heavy ion collision data at 1A GeV energies to infer the physics of compact stars, emphasizing the importance of comprehensive simulations of experimental observables.

Contribution

It introduces a systematic approach to connect heavy ion collision observations with astrophysical insights through detailed simulations.

Findings

Successful simulation of multiple observables is crucial.

Finite size and structural effects significantly influence collision outcomes.

Systematic analysis helps bridge experimental data and astrophysical models.

Abstract

The derivation of information useful for understanding the physics inside compact stars from HIC observations is a difficult task. Complications due to finite size, different chemistry, non-adiabatic compression, incomplete stopping and structural effects must be overcome. This can only be convincingly achieved by a successful simulation of many experimental observables varying incident energy, system size and isospin content. Using now available systematic FOPI data in the SIS energy range we try to trace the path to take.