| タイトル | Observations of quasi-periodic oscillations from GX 5 - 1 and Cygnus X-2 with the Einstein (HEAO 2) Observatory |
| 著者（英） | Williams, A. C.; Ramsey, B. D.; Weisskopf, M. C.; Darbro, W.; Elsner, R. F. |
| 著者所属（英） | NASA Marshall Space Flight Center |
| 発行日 | 1986-09-15 |
| 言語 | eng |
| 内容記述 | The bright galactic bulge X-ray source GX 5 - 1 was observed in April 1979 with the Monitor Proportional Counter on board the Einstein (HEAO 2) Observatory. Analysis of the high time resolution data from the Time Interval Processor confirms the recent Exosat discovery of quasi-periodic oscillations in the X-ray emission from GX 5 - 1. In addition, the summed 0.4 s power spectrum shows the low-frequency red noise component also discovered in the Exosat data. Low-frequency structure is also clearly present in data taken from the bright galaxtic X-ray source Cyg X-2 in December 1978. The expected power spectrum for quasi-periodic oscillations was calculated, including the low-frequency red noise component, using a simple shot noise model with oscillating shots. |
| NASA分類 | ASTROPHYSICS |
| レポートNO | 87A19468 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/380782 |
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