| タイトル | Long-term cycles in cosmic X-ray sources |
| 著者（英） | Priedhorsky, W. C.; Holt, S. S. |
| 著者所属（英） | NASA Goddard Space Flight Center|Max-Planck-Inst. fuer Extraterrestrische Physik|Los Alamos National Lab. |
| 発行日 | 1987-01-01 |
| 言語 | eng |
| 内容記述 | Data on long-term cycles in galactic X-ray sources are reviewed, and classes of variations are identified including precessional activity, recurrent outbursts in Population II sources, and Be/neutron star flare cycles. Cycles of 30-300 days have been found in LMC X-4, Her X-1, SS433, and Cyg X-1 which represent cyclic variations in both the inner and outer parts of the accretion disk. Quasi-periodic cycles with periods ranging from 1/2 to 2 years have been noted in several low-mass X-ray binaries. It is suggested that periodic outbursts in the Be/neutron star systems may result from variable mass transfer in a wide eccentric orbit. |
| NASA分類 | ASTROPHYSICS |
| レポートNO | 88A24320 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/372661 |
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