Academic Journal
Discovery of kHz Fluctuations in Centaurus X-3: Evidence for Photon Bubble Oscillations (PBO) and Turbulence in a High Mass X-ray Binary Pulsar
| العنوان: | Discovery of kHz Fluctuations in Centaurus X-3: Evidence for Photon Bubble Oscillations (PBO) and Turbulence in a High Mass X-ray Binary Pulsar |
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| المؤلفون: | J. Garrett Jernigan, Richard I. Klein, Jonathan Arons |
| المساهمون: | The Pennsylvania State University CiteSeerX Archives |
| المصدر: | http://arxiv.org/pdf/astro-ph/9909133v1.pdf. |
| سنة النشر: | 1999 |
| المجموعة: | CiteSeerX |
| الوصف: | We report the discovery of kHz fluctuations, including quasi-periodic oscillations (QPO) at ∼ 330 Hz (260−407 Hz) and ∼ 760 Hz (671−849 Hz) and a broadband kHz continuum in the power density spectrum of the high mass X-ray binary pulsar Centaurus X-3 (Jernigan, Klein and Arons 1999). These observations of Cen X-3 were carried out with the Rossi X-ray Timing Explorer (RXTE). The fluctuation spectrum is flat from mHz to a few Hz, then steepens to f −2 behavior between a few Hz and ∼ 100 Hz. Above a hundred Hz, the spectrum shows the QPO features, plus a flat continuum extending to ∼ 1200 Hz and then falling out to ∼ 1800 Hz. These results, which required the co-adding three days of observations of Cen X-3, are at least as fast as the fastest known variations in X-ray emission from an accreting compact object (kHz QPO in LMXB sources) and probably faster since extension to ∼ 1800 Hz is indicated by the most likely parameterization of the data. Multi-dimensional radiation hydrodynamics simulations of optically thick plasma flow onto the magnetic poles of an accreting neutron star show that the fluctuations at frequencies above 100 Hz are consistent with photon bubble turbulence and oscillations (PBO) previously predicted (Klein et al. 1996a) to be observable in this source. We show that previous |
| نوع الوثيقة: | text |
| وصف الملف: | application/pdf |
| اللغة: | English |
| Relation: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.316.6269; http://arxiv.org/pdf/astro-ph/9909133v1.pdf |
| الاتاحة: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.316.6269 http://arxiv.org/pdf/astro-ph/9909133v1.pdf |
| Rights: | Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
| رقم الانضمام: | edsbas.588C933C |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |