2007A&A...471..381Y

Query : 2007A&A...471..381Y

2007A&A...471..381Y - Astronomy and Astrophysics, volume 471381-384 (2007/8-4)

The correlations between the spin frequencies and kHz QPOs of neutron stars in LMXBs.

YIN H.X., ZHANG C.M., ZHAO Y.H., LEI Y.J., QU J.L., SONG L.M. and ZHANG F.

Abstract (from CDS):

We studied the correlations between spin frequencies and kilohertz quasi-periodic oscillations (kHz QPOs) in neutron star low-mass X-ray binaries. The updated data on kHz QPOs and spin frequencies are statistically analyzed. We find that when two simultaneous kHz QPOs are present in the power spectrum, the minimum frequency of upper kHz QPO is at least 1.3 times higher than the spin frequency, i.e. ν_s<ν_2min/1.3. We also find that the average kHz QPO peak separation in 6 Atoll sources anti-correlates with the spin frequency in the form <Δν≥-(0.19±0.05)ν_s+(389.40±21.67)Hz. If we shift this correlation in the direction of the peak separation by a factor of 1.5, this correlation matches the data points of the two accretion-powered millisecond X-ray pulsars, SAX J1808.4-3658 and XTE J1807-294.

Abstract Copyright: ∼

Journal keyword(s): X-rays: binaries - accretion, accretion disks - stars: neutron

CDS comments: Paragraph 2.2 4U 1731-39 is a probable misprint for 4U 1728-34.

Simbad objects: 35

Full paper

View the references in ADS

Number of rows : 35

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* V1037 Cas	LXB	00 29 03.06	+59 34 19.0						~	283	1
2	V* V1055 Ori	LXB	06 17 07.3565603963	+09 08 13.515857360		18.80	18.5			~	594	1
3	V* UY Vol	LXB	07 48 33.71	-67 45 07.7	16.10	17.00	16.9	16.7	17.05	~	660	0
4	V* BW Ant	LXB	09 29 20.19	-31 23 03.2		18.50	18.63			~	194	0
5	V* GR Mus	LXB	12 57 37.1833002949	-69 17 18.996899563		19.40	19.1			~	275	0
6	V* BR Cir	HXB	15 20 40.8532547060	-57 10 00.206639033		21.4	21.4			B5-A0I	849	1
7	V* QX Nor	LXB	16 12 43.0	-52 25 26						~	946	1
8	V* V818 Sco	LXB	16 19 55.0692669024	-15 38 25.017666540	11.60	12.40	11.1			Oev	1730	0
9	V* V801 Ara	LXB	16 40 55.5976953528	-53 45 04.948107156	17.50	18.20	17.5		17.07	~	921	0
10	4U 1642-45	LXB	16 45 48.1	-45 36 42						~	467	1
11	[KRL2007b] 214	LXB	17 00 58.46	-46 11 08.6						~	296	0
12	MXB 1658-298	LXB	17 02 06.54	-29 56 44.1	18.35	18.75	18.3			~	381	0
13	V* V1101 Sco	LXB	17 05 44.4916006152	-36 25 23.049324480		20.10	18.6			~	473	0
14	X Ara X-1	LXB	17 06 15.2	-43 02 11						~	296	1
15	1RXS J170855.6-440653	LXB	17 08 54.346	-44 06 08.38						~	406	1
16	NAME Slow Burster	LXB	17 31 58.0	-33 49 58			15.50			~	865	1
17	KS 1731-260	LXB	17 34 13.46	-26 05 18.6				22.8	20.9	~	437	0
18	V* V926 Sco	LXB	17 38 58.2384053021	-44 27 00.699118812	16.90	17.70	17.5			~	480	0
19	SRGA J173953.4-282943	LXB	17 39 53.4	-28 29 43						~	106	0
20	MXB 1743-29	LXB	17 45 47	-29 17.2						~	54	2
21	[KRL2007b] 281	LXB	17 48 13.148	-36 07 57.02			20.9			~	115	0
22	[PLV2002] CX1	LXB	17 48 52.163	-20 21 32.40						~	213	1
23	SAX J1750.8-2900	LXB	17 50 24.42	-29 02 15.4						~	146	0
24	[KRL2007b] 291	LXB	17 51 13.49	-30 37 23.4						~	262	0
25	4U 1758-25	LXB	18 01 09.7308060816	-25 04 44.120221284			11.08			~	705	1
26	[KRL2007b] 304	LXB	18 06 59.8	-29 24 30						~	228	0
27	SAX J1808.4-3658	LXB	18 08 27.58	-36 58 43.9						~	1051	0
28	V* V5511 Sgr	LXB	18 13 39.03	-33 46 22.3		18.61	18.33	18.05		~	215	0
29	V* NP Ser	LXB	18 16 01.7	-14 02 09		18.8				K	683	2
30	X Sgr X-4	LXB	18 23 40.57	-30 21 40.6		19.06	18.81			~	1056	1
31	2MAXI J1900-248	LXB	19 00 08.65	-24 55 13.7			18.09			~	226	0
32	X Aql X-1	LXB	19 11 16.0571313336	+00 35 05.868232692						~	1186	1
33	V* V1405 Aql	LXB	19 18 47.6	-05 14 18	20.90	21.40	21.0			~	495	0
34	V* LZ Aqr	LXB	21 23 14.54	-05 47 52.9	15.90	16.78	16.8			~	154	0
35	V* V1341 Cyg	LXB	21 44 41.1544345272	+38 19 17.066570988	15.00	15.13	14.68	15.00		A9III	1229	1

To bookmark this query, right click on this link: simbad:objects in 2007A&A...471..381Y and select 'bookmark this link' or equivalent in the popup menu