Simple fits for the neutrino luminosities from protoneutron star cooling
Fuente:
arXiv
Guardado en:
| Autores principales: | , , , |
|---|---|
| Formato: | Preprint |
| Publicado: |
2024
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866914949768413184 |
|---|---|
| author | Lucente, Giuseppe Heinlein, Malte Janka, H. -Thomas Mirizzi, Alessandro |
| author_facet | Lucente, Giuseppe Heinlein, Malte Janka, H. -Thomas Mirizzi, Alessandro |
| contents | We propose a simple fit function, $L_{ν_i}(t) = C\, t^{-α}\, e^{-(t/τ)^{n}}$, to parametrize the luminosities of neutrinos and antineutrinos of all flavors during the protoneutron star (PNS) cooling phase at post-bounce times $t \gtrsim 1$ s. This fit is based on results from a set of neutrino-hydrodynamics simulations of core-collapse supernovae in spherical symmetry. The simulations were performed with an energy-dependent transport for six neutrino species and took into account the effects of convection and muons in the dense and hot PNS interior. We provide values of the fit parameters $C$, $α$, $τ$, and $n$ for different neutron star masses and equations of state as well as correlations between these fit parameters. Our functional description is useful for analytic supernova modeling, for characterizing the neutrino light curves in large underground neutrino detectors, and as a tool to extract information from measured signals on the mass and equation of state of the PNS and on secondary signal components on top of the PNS's neutrino emission. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_00769 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Simple fits for the neutrino luminosities from protoneutron star cooling Lucente, Giuseppe Heinlein, Malte Janka, H. -Thomas Mirizzi, Alessandro High Energy Astrophysical Phenomena High Energy Physics - Phenomenology We propose a simple fit function, $L_{ν_i}(t) = C\, t^{-α}\, e^{-(t/τ)^{n}}$, to parametrize the luminosities of neutrinos and antineutrinos of all flavors during the protoneutron star (PNS) cooling phase at post-bounce times $t \gtrsim 1$ s. This fit is based on results from a set of neutrino-hydrodynamics simulations of core-collapse supernovae in spherical symmetry. The simulations were performed with an energy-dependent transport for six neutrino species and took into account the effects of convection and muons in the dense and hot PNS interior. We provide values of the fit parameters $C$, $α$, $τ$, and $n$ for different neutron star masses and equations of state as well as correlations between these fit parameters. Our functional description is useful for analytic supernova modeling, for characterizing the neutrino light curves in large underground neutrino detectors, and as a tool to extract information from measured signals on the mass and equation of state of the PNS and on secondary signal components on top of the PNS's neutrino emission. |
| title | Simple fits for the neutrino luminosities from protoneutron star cooling |
| topic | High Energy Astrophysical Phenomena High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2405.00769 |