The Structure of Accretion Disks Formed by Merging of White Dwarfs
[摘要] Thecoalescenceoftwowhitedwarfsinaclosebinarysystemwasinvestigatedusinghydrodynamicalsimulations.TheGodunovSmoothedParticleHydrodynamicsmethodwasadoptedforthecalculations.Weperformedvariousmodelsofbinarysystemswithdifferentmassesandmassratiosofthewhitedwarfs.Asaresultofcoalescence,anaccretiondiskisformedaroundtheprimarystar.Thecharacteristicquantitiesofthedisks,suchasthetemperatureandrotationprofile,werefoundtobeindependentoftheinitialbinaryparameters.WealsodiscussthesubsequentevolutionoftheaccretiondiskandthepossibilityofaTypeIasupernovaexplosionfromthemergingoftwowhitedwarfs.
[发布日期] [发布机构]
[效力级别] [学科分类] 天文学(综合)
[关键词] "white dwarfs";"binaries: close";"supernovae: general" [时效性]
