Nickel-rich outflows produced by the accretion-induced collapse of white dwarfs: light curves and spectra
| Autor: | D. Kasen, R. C. Thomas, Siva Darbha, Peter Nugent, Brian D. Metzger, Eliot Quataert |
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| Rok vydání: | 2010 |
| Předmět: |
Physics
Astrophysics::High Energy Astrophysical Phenomena White dwarf Astronomy and Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics Kilonova Accretion (astrophysics) Spectral line Luminosity Neutron star Space and Planetary Science Radiative transfer Astrophysics::Solar and Stellar Astrophysics Astrophysics::Earth and Planetary Astrophysics Ejecta Astrophysics::Galaxy Astrophysics |
| Zdroj: | Monthly Notices of the Royal Astronomical Society. 409:846-854 |
| ISSN: | 0035-8711 |
| DOI: | 10.1111/j.1365-2966.2010.17353.x |
| Popis: | The accretion-induced collapse (AIC) of a white dwarf to form a neutron star can leave behind a rotationally supported disk with mass of up to ~ 0.1 M_sun. The disk is initially composed of free nucleons but as it accretes and spreads to larger radii, the free nucleons recombine to form helium, releasing sufficient energy to unbind the remaining disk. Most of the ejected mass fuses to form Ni56 and other iron group elements. We present spherically symmetric radiative transfer calculations of the transient powered by the radioactive heating of this ejecta. For an ejecta mass of 1e-2 M_sun (3e-3 M_sun), the lightcurve peaks after |
| Databáze: | OpenAIRE |
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