The binary systems associated with short and long gamma-ray bursts and their detectability
Résumé
Short and long-duration gamma-ray bursts (GRBs) have been recently sub-classified into seven families according to the binary nature of their progenitors. For short GRBs, mergers of neutron star binaries (NS–NS) or neutron star-black hole binaries (NS-BH) are proposed. For long GRBs, the induced gravitational collapse (IGC) paradigm proposes a tight binary system composed of a carbon–oxygen core (COcore) and a NS companion. The explosion of the COcore as supernova (SN) triggers a hypercritical accretion process onto the NS companion which might reach the critical mass for the gravitational collapse to a BH. Thus, this process can lead either to a NS-BH or to NS–NS depending on whether or not the accretion is sufficient to induce the collapse of the NS into a BH. We shall discuss for the above compact object binaries: (1) the role of the NS structure and the equation-of-state on their final fate; (2) their occurrence rates as inferred from the X and gamma-ray observations; (3) the expected number of detections of their gravitational wave (GW) emission by the Advanced LIGO interferometer.
Mots clés
04.30.Tv
04.40.Dg
97.60.Bw
97.60.Jd
97.60.Lf
98.62.Mw
Gamma-ray bursts
neutron stars
black holes
gamma ray: burst
gravitation: collapse
neutron star: binary
gravitation: induced
matter: accretion
gravitational radiation detector
gravitational radiation
gravitational radiation: emission
localization
equation of state
interferometer
black hole
supernova
LIGO
Origine : Fichiers produits par l'(les) auteur(s)
Loading...