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| Query : 2011A&A...528A.126W |
2011A&A...528A.126W - Astronomy and Astrophysics, volume 528A126-126 (2011/4-1)
A model for the upper kHz QPO coherence of an accreting neutron star.
WANG J., ZHANG C.M., ZHAO Y.H., LIN Y.F., YIN H.X. and SONG L.M.
Abstract (from CDS):
We investigate the coherence of the twin kilohertz quasi-periodic oscillations (kHz QPOs) in the low-mass X-ray binary (LMXB) theoretically. The profile of upper kHz QPO, interpreted as Keplerian frequency, is ascribed to the radial extent of the kHz QPO emission region associated with the transitional layer at the magnetosphere-disc boundary, which corresponds to the coherence of upper kHz QPO. The theoretical model for the Q-factor of upper kHz QPO is applied to the observational data of five Atoll and five Z sources, and the consistence is implied.
Abstract Copyright: ∼
Journal keyword(s): accretion: accretion disks - stars: neutron - binaries: close - X-rays: binaries
CDS comments: Paragraph 2 SAX J1804.5-3654 not in Simbad, may be a misprint for SAX J1808.4-3658.
Simbad objects: 13
| Number of rows : 13 |
| N | Identifier | Otype |
ICRS (J2000) RA |
ICRS (J2000) DEC |
Mag U | Mag B | Mag V | Mag R | Mag I | Sp type |
#ref
1850 - 2026 |
#notes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | V* BR Cir | HXB | 15 20 40.8532547060 | -57 10 00.206639033 | 21.4 | 21.4 | B5-A0I | 849 | 1 | |||
| 2 | V* QX Nor | LXB | 16 12 43.0 | -52 25 26 | ~ | 946 | 1 | |||||
| 3 | V* V818 Sco | LXB | 16 19 55.0692669024 | -15 38 25.017666540 | 11.60 | 12.40 | 11.1 | Oev | 1730 | 0 | ||
| 4 | V* V801 Ara | LXB | 16 40 55.5976953528 | -53 45 04.948107156 | 17.50 | 18.20 | 17.5 | 17.07 | ~ | 921 | 0 | |
| 5 | 4U 1642-45 | LXB | 16 45 48.1 | -45 36 42 | ~ | 467 | 1 | |||||
| 6 | NAME Slow Burster | LXB | 17 31 58.0 | -33 49 58 | 15.50 | ~ | 865 | 1 | ||||
| 7 | V* V926 Sco | LXB | 17 38 58.2384053021 | -44 27 00.699118812 | 16.90 | 17.70 | 17.5 | ~ | 480 | 0 | ||
| 8 | 4U 1758-25 | LXB | 18 01 09.7308060816 | -25 04 44.120221284 | 11.08 | ~ | 705 | 1 | ||||
| 9 | [KRL2007b] 304 | LXB | 18 06 59.8 | -29 24 30 | ~ | 228 | 0 | |||||
| 10 | SAX J1808.4-3658 | LXB | 18 08 27.58 | -36 58 43.9 | ~ | 1051 | 0 | |||||
| 11 | V* NP Ser | LXB | 18 16 01.7 | -14 02 09 | 18.8 | K | 683 | 2 | ||||
| 12 | X Sgr X-4 | LXB | 18 23 40.57 | -30 21 40.6 | 19.06 | 18.81 | ~ | 1056 | 1 | |||
| 13 | V* V1341 Cyg | LXB | 21 44 41.1544345272 | +38 19 17.066570988 | 15.00 | 15.13 | 14.68 | 15.00 | A9III | 1229 | 1 |
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