2011A&A...525A..82S

Query : 2011A&A...525A..82S

2011A&A...525A..82S - Astronomy and Astrophysics, volume 525A82-82 (2011/1-1)

Resonant radii of kHz quasi-periodic oscillations in Keplerian discs orbiting neutron stars.

STUCHLIK Z., KOTRLOVA A. and TOEROEK G.

Abstract (from CDS):

Exchange of dominance between twin kHz quasi-periodic oscillations (QPOs) observed in some low-mass-X-ray-binaries (LMXBs) suggests the possibility of a resonance between two oscillatory modes. We study the behaviour of the effective gravitational potential around specific resonant radii, and estimate the role of the higher-order terms governing the non-linear, anharmonic forcing. We discuss the impact it has on the mode amplitude in the linear and non-linear regimes. We also discuss a related possibility of lowering of the neutron star mass estimates from the highest observed QPO frequencies.

Abstract Copyright: ∼

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

Simbad objects: 6

goto Full paper

goto View the references in ADS

Number of rows : 6
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* V1055 Ori LXB 06 17 07.3565603963 +09 08 13.515857360   18.80 18.5     ~ 594 1
2 V* QX Nor LXB 16 12 43.0 -52 25 26           ~ 946 1
3 V* V801 Ara LXB 16 40 55.5976953528 -53 45 04.948107156 17.50 18.20 17.5   17.07 ~ 921 0
4 NAME Slow Burster LXB 17 31 58.0 -33 49 58     15.50     ~ 865 1
5 V* V926 Sco LXB 17 38 58.2384053021 -44 27 00.699118812 16.90 17.70 17.5     ~ 480 0
6 X Sgr X-4 LXB 18 23 40.57 -30 21 40.6   19.06 18.81     ~ 1056 1

To bookmark this query, right click on this link: simbad:objects in 2011A&A...525A..82S and select 'bookmark this link' or equivalent in the popup menu