Other
Scientific paper
Jul 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007an....328..491z&link_type=abstract
Astronomische Nachrichten, Vol.328, Issue 6, p.491
Other
5
Accretion: Accretion Disks, Stars: Neutron, Binaries: Close, X-Rays: Binaries, X-Rays: Stars
Scientific paper
In this paper, we improve the previous work on the MHD Alfvén wave oscillation model for the neutron star (NS) kHz quasi-periodic oscillations (QPOs), and compare the model with the updated twin kHz QPO data. For the 17 NS X-ray sources with the simultaneously detected twin kHz QPO frequencies, the stellar mass M and radius R constraints are given by means of the derived parameter A in the model, which is associated with the averaged mass density of the star as { < ρ R_An = 3M/(4π R3) ≃ 2.4× 1014 (A/0.7)2} g/cm3, and we also compare the M-R constraints with the stellar equations of state. Moreover, we also discuss the theoretical maximum kHz QPO frequency and maximum twin peak separation, and some expectations on SAX J1808.4-3658 are mentioned, such as its highest kHz QPO frequency ˜ 870 Hz, which is about 1.4-1.5 times less than those of the other known kHz QPO sources. The estimated magnetic fields for both Z sources (about Eddington accretion rate \dot {M}Edd) and Atoll sources (˜ 1% \dot {M}Edd) are approximately ˜ 10^9 G and ˜ 10^8 G, respectively.
Chang Hsiang Kuang
Song Li Ming
Yin Hong-Xing
Zhang Cheng-Min
Zhao Yong-Heng
No associations
LandOfFree
The applications of the MHD Alfvén wave oscillation model for kHz quasi-periodic oscillations does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The applications of the MHD Alfvén wave oscillation model for kHz quasi-periodic oscillations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The applications of the MHD Alfvén wave oscillation model for kHz quasi-periodic oscillations will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1030716