Radiative Flow in a Luminous Disk II

摘要

Radiatively-driventransferflowperpendiculartoaluminousdiskisexaminedinthesubrelativisticregimeof$$(v/c)^1$$,takingintoaccountthegravityofthecentralobject.Theflowisassumedtobevertical,andthegaspressureisignored,whileinternalheatingisassumedtobeproportionaltothegasdensity.Thebasicequationswerenumericallysolvedasafunctionoftheopticaldepth,andtheflowvelocity,theheight,theradiativeflux,andtheradiationpressurewereobtainedforagivenradius,aninitialopticaldepth,andinitialconditionsattheflowbase(diska€?insidea€?),whereasthemass-lossratewasdeterminedasaneigenvalueoftheboundaryconditionattheflowtop(diska€?surfacea€?).Forsufficientlyluminouscases,theflowresemblesthecasewithoutgravity.Forless-luminouscases,however,theflowvelocitydecreases,andtheflowwouldbeimpossibleduetotheexistenceofgravityinthecasethattheradiativefluxissufficientlysmall.Applicationtoasupercriticalaccretiondiskwithmasslossisbrieflydiscussed.