Disk-instability model for soft-X-ray transients containing black holes

摘要: Consideration is given to the time-dependent behavior of accretion disks in low-mass X-ray binaries as a model for soft transients. The thermal stability and vertical structure properties disk are studied range between 10 7th 8th cm. An Eulerian thin used show that, relevant rates, suffers instability leading intermittent onto central compact object. reproduces basic features outbursts Also, physical state quiescence binary A0620-00 examined, focusing on possible existence black hole. It suggested that modulation flow inner may be responsible bimodal observed spectra hole candidates such Cyg X-1, GX 339-4, A0620-00. 72 refs.