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dc.contributor.author | Werner K. | |
dc.contributor.author | Nagel T. | |
dc.contributor.author | Rauch T. | |
dc.contributor.author | Suleimanov V. | |
dc.date.accessioned | 2018-09-18T20:07:36Z | |
dc.date.available | 2018-09-18T20:07:36Z | |
dc.date.issued | 2007 | |
dc.identifier.issn | 0273-1177 | |
dc.identifier.uri | https://dspace.kpfu.ru/xmlui/handle/net/136760 | |
dc.description.abstract | We describe our recent progress in modeling supernova-fallback disks and neutron star (NS) atmospheres. We present a first detailed spectrum synthesis calculation of a SN-fallback disk composed of iron. We assume a thin disk with a radial structure described by the α-disk model. The vertical structure and emission spectrum are computed self-consistently 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 investigate Compton scattering effects on the thermal spectrum of NSs. In addition, we constructed a new generation of metal line-blanketed non-LTE model atmospheres for NSs. It is compared to X-ray burst spectra of EXO 0748-676. It is possible that the gravitational redshift, deduced from absorption lines, is lower (z = 0.24) than hitherto assumed (z = 0.35). Accordingly, this would result in NS mass and radius lower limits of M ≥ 1.63 Mȯ and R ≥ 13.8 km. © 2006 COSPAR. | |
dc.relation.ispartofseries | Advances in Space Research | |
dc.subject | Accretion | |
dc.subject | Accretion disks | |
dc.subject | Infall | |
dc.subject | Neutron stars | |
dc.title | Non-LTE models for neutron star atmospheres and supernova-fallback disks | |
dc.type | Article | |
dc.relation.ispartofseries-issue | 10 | |
dc.relation.ispartofseries-volume | 40 | |
dc.collection | Публикации сотрудников КФУ | |
dc.relation.startpage | 1512 | |
dc.source.id | SCOPUS02731177-2007-40-10-SID35248850722 |