SIMBAD references

2013MNRAS.433.2436P - Mon. Not. R. Astron. Soc., 433, 2436-2444 (2013/August-2)

Discovery of twin kHz quasi-periodic oscillations in the low-mass X-ray binary XTE J1701-407.

PAWAR D.D., KALAMKAR M., ALTAMIRANO D., LINARES M., SHANTHI K., STROHMAYER T., BHATTACHARYA D. and VAN DER KLIS M.

Abstract (from CDS):

We report the discovery of kHz quasi-periodic oscillations (QPOs) in three Rossi X-ray Timing Explorer observations of the low-mass X-ray binary XTE J1701-407. In one of the observations we detect a kHz QPO with a characteristic frequency of 1153±5 Hz, while in the other two observations we detect twin QPOs at characteristic frequencies of 740±5, 1112±17 Hz and 740±11, 1098±5 Hz. All detections happen when XTE J1701-407 was in its high-intensity soft state, and their single-trial significance is in the 3.1-7.5σ range. The frequency difference in the centroid frequencies of the twin kHz QPOs (385±13 Hz) is one of the largest seen till date. The 3-30 keV fractional rms amplitude of the upper kHz QPO varies between ∼ 18 and ∼ 30 per cent. XTE J1701-407, with a persistent luminosity close to 1 per cent of the Eddington limit, is among the small group of low-luminosity kHz QPO sources and has the highest rms for the upper kHz QPO detected in any source. The X-ray spectral and variability characteristics of this source indicate its atoll source nature.

Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

Journal keyword(s): binaries: general - stars: individual: XTE J1701-407 - stars: neutron - X-rays: binaries

Simbad objects: 19

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2020.01.20-09:58:55

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