no code implementations • 5 Oct 2020 • Guglielmo Costa, Alessandro Bressan, Michela Mapelli, Paola Marigo, Giuliano Iorio, Mario Spera
Adopting the uncertainties given by the STARLIB database, for models computed with the $^{12}$C($\alpha$, $\gamma$)$^{16}$O rate $-1\, \sigma$, we find that the PI mass gap ranges between $\approx{}80$ M$_\odot$ and $\approx{}150$ M$_\odot$.
Solar and Stellar Astrophysics
no code implementations • 8 Sep 2020 • Filippo Santoliquido, Michela Mapelli, Nicola Giacobbo, Yann Bouffanais, M. Celeste Artale
Among binary evolution processes, uncertainties on common envelope ejection have a major impact: the local merger rate density of BNSs varies from $\sim{}10^3$ to $\sim{}20$ Gpc$^{-3}$ yr$^{-1}$ if we change the common envelope efficiency parameter from $\alpha_{\rm CE}=7$ to 0. 5, while the local merger rates of BBHs and BHNSs vary by a factor of $\sim{}2-3$.
High Energy Astrophysical Phenomena Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies Solar and Stellar Astrophysics
1 code implementation • 25 Feb 2020 • M. Celeste Artale, Yann Bouffanais, Michela Mapelli, Nicola Giacobbo, Nadeen B. Sabha, Filippo Santoliquido, Mario Pasquato, Mario Spera
To this end, we combine population synthesis simulations together with galaxy catalogues from the hydrodynamical cosmological simulation EAGLE to derive the properties of the host galaxies of binary neutron star (BNS), black hole-neutron star (BHNS) and binary black hole (BBH) mergers.
Astrophysics of Galaxies High Energy Astrophysical Phenomena
