Accretion Disk Structure And Evolution

克雷格惠勒博士将利用这一奖项来探索热 吸积盘的不稳定性在各种情况下， 更深入地了解二进制中的瞬态现象， 恒星及相关系统 将尝试将 取代流的非定域角动量输运模型 粘度模型。 不稳定盘对键的敏感性 参数，如传输速率，内外盘半径， 中心质量和粘度将被探索。 模型 中极双星的磁截盘 GK Per将被改进以进行X- 下一次爆发的射线、紫外线和光学行为 预计在1992年年中。 包含时间依赖的模型 冠状和随之而来的影响，磁盘照射从 内盘、致密物体和日冕将被用来 探索像Agl X-1和Cen这样的软X射线瞬变的行为 X-4包含中子星和一些短暂的黑色 洞候选人。

Dr. Craig Wheeler will use this award to explore thermal instabilities in accretion disks in a variety of contexts in order to gain a deeper understanding of transient phenomena in binary stars and related systems. An attempt will be made to incorporate models of non-local angular momentum transport to supplant current models for viscosity. The sensitivity of unstable disks to key parameters, such as transfer rate, inner and outer disk radii, central mass, and viscosity, will be explored. Models of the magnetically truncated disk of the intermediate polar binary system GK Per will be refined to make quantitative predictions of the X- ray, ultraviolet, and optical behavior of the next outburst expected about mid 1992. Models incorporating time dependent coronae and the attendant effects of disk irradiation from the inner disk, the compact object, and the corona will be used to explore the behavior of soft X-ray transients like Agl X-1 and Cen X-4 which contain neutron stars and a number of transient black hole candidates.