Non-LTE modeling of supernova-fallback disks
| dc.creator | Werner, K. | |
| dc.creator | Nagel, T. | |
| dc.creator | Rauch, T. | |
| dc.date | 2006-08-24 | |
| dc.date.accessioned | 2026-07-07T10:39:51Z | |
| dc.date.available | 2026-07-07T10:39:51Z | |
| dc.description | We present a first detailed spectrum synthesis calculation of a supernova-fallback disk composed of iron. We assume a geometrically thin disk with a radial structure described by the classical alpha-disk model. The disk is represented by concentric rings radiating as plane-parallel slabs. The vertical structure and emission spectrum of each ring is computed in a fully self-consistent manner by solving the structure equations simultaneously with the radiation transfer equations under non-LTE conditions. We describe the properties of a specific disk model and discuss various effects on the emergent UV/optical spectrum. We find that strong iron-line blanketing causes broad absorption features over the whole spectral range. Limb darkening changes the spectral distribution up to a factor of four depending on the inclination angle. Consequently, such differences also occur between a blackbody spectrum and our model. The overall spectral shape is independent of the exact chemical composition as long as iron is the dominant species. A pure iron composition cannot be distinguished from silicon-burning ash. Non-LTE effects are small and restricted to few spectral features. | |
| dc.description | ApSS, accepted, Proceedings of Isolated Neutron Stars: from the Interior to the Surface, April 24-28, 2006, London, UK | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0608529 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0608529 | |
| dc.identifier | Astrophys.SpaceSci.308:141-149,2007 | |
| dc.identifier | doi:10.1007/s10509-007-9349-3 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/181177 | |
| dc.subject | Astrophysics | |
| dc.title | Non-LTE modeling of supernova-fallback disks | |
| dc.type | text |