A Vertical Resonance of g-Mode Oscillations in Warped Disks and QPOs in Low-Mass X-Ray Binaries

Publications of the Astronomical Society of Japan

Kato, Shoji¹ 

[1] Department of Informatics, Nara Sangyo University, Ikoma-gun, Nara 636-8503 ,

关键词: "accretion;    accretion disks";    "quasi-periodic oscillations";    resonance;    warp;    "X-rays: stars";   

DOI  :  10.1093/pasj/57.4.699

学科分类：天文学(综合)

来源: Oxford University Press

【 摘 要 】

Resonantoscillationsinwarpeddisksareexaminedinordertoexplainhigh-frequencyQPOsandhorizontal-branchQPOsinlow-massX-raybinaries.Differentfromourpreviouswork,addressedtothesamesubjects,werelaxinthispapertheassumptionthatthedisksareisothermalintheverticaldirection.Thatis,thepressure,density,andtemperatureareassumedtobedistributedintheverticaldirectionwithapolytropicrelation,andthepolytropicindexchangesasthediskstatechanges.Bythisgeneralizationandbysomesubsidiarieswecanqualitativelyexplain,withintheframeworkofourresonancemodel,observedlargefrequencyvariationsinneutron-starQPOsandlittlevariationsinblack-holeQPOs.Weconsiderverticalresonancesofg-modeoscillations,sincetheyaremostappropriatetoexplainobservations.

【 授权许可】

Unknown