University of Groningen
Disc reflection in low-mass X-ray binaries
Wang, Yanan
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Publication date: 2018
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Wang, Y. (2018). Disc reflection in low-mass X-ray binaries. Rijksuniversiteit Groningen.
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Stellingen
behorende bij het proefschrijft
Disc reflection in low-mass X-ray binaries
1. The elemental abundance in the interstellar medium can fundamentally affect the results of spectral analysis in X-ray binaries (Chapter 2).
2. Disc reflection, a product of the interaction between the corona (or other com-ponents) and the disc, provides a powerful tool to not only measure the spin pa-rameter of a compact star and the accretion-disc properties of an X-ray binary, but also to deduce the geometry of the corona of these systems (Chapter 3). 3. Fast variability is ubiquitous in X-ray binaries; whenever possible, timing
anal-ysis is required before conducting spectral analanal-ysis (Chapter 4).
4. A small χ2 may indicate a good fit in the statistical sense, but a good fit is not necessarily physically meaningful (Chapter 3).
5. The inner radius of the disc in accreting systems is generally correlated with the source state, but there are always exceptions (Chapters 3 and 5).
6. There is now evidence that the direct and the reflected emission of the black-hole candidate IGR J17091–3624 are correlated on time scales of a few hundred days, but not on the quasi-periodic oscillation time scales of a few dozen seconds. Telescopes with larger effective area and higher energy resolution than what is currently available are crucial to further elucidate this issue (Chapter 4). 7. As a researcher you may not be talented but you have to be patient. 8. ‘She’ or ‘he’ is always a question.
9. Interest and curiosity are key for both research and personal life.
10. Doing sports is one of the most effective ways to relax your brain and body.
