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Neutron stars origins and masses
Author(s) -
Horvath Jorge Ernesto,
Rocha Lívia S.,
Bernardo Antonio,
Valientim Rodolfo,
Avellar Marcio Guilherme Bronzato
Publication year - 2021
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.202113922
Subject(s) - neutron star , physics , supernova , astrophysics , high mass , r process , stars , compact star , mass distribution , sample (material) , event (particle physics) , astronomy , nuclear physics , galaxy , nucleosynthesis , thermodynamics
We present in this talk an overview of the neutron star origin events and masses. Using the existing sample of ∼80 measured neutron star masses, we show that the distribution requires more than one mass‐scale and that its highest value inferred from the sample is compatible with 2.5 M ⊙ , suggesting that very heavy neutron stars may be present in Nature. The case of some “spider” systems and the enigmatic high‐mass object in the GW190408 event, as well as the highest measured values from other binaries may support a high M max . Finally, we review the connection of supernovae compact remnants with the observed masses and discuss some important features still unclear from simulations related to the former problem of the mass origins.