Type I X-ray bursts, burst oscillations and kHz quasi-periodic oscillations in the neutron star system IGRJ17191-2821

Bibcode
2010MNRAS.401..223A
DOI
10.1111/j.1365-2966.2009.15627.x
Altamirano, D.; Linares, M.; Patruno, A.; Degenaar, N.; Wijnands, R.; Klein-Wolt, M.; van der Klis, M.; Markwardt, C.; Swank, J.
Bibliographical reference

Monthly Notices of the Royal Astronomical Society, Volume 401, Issue 1, pp. 223-230.

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1
2010
Journal
Monthly Notices of the Royal Astronomical Society
Number of authors
9
IAC number of authors
0
Citations
27
Refereed citations
24
Description
We present a detailed study of the X-ray energy and power spectral properties of the neutron star transient IGRJ17191-2821. We discovered four instances of pairs of simultaneous kilohertz quasi-periodic oscillations (kHz QPOs). The frequency difference between these kHz QPOs is between 315 and 362Hz. We also report on the detection of five thermonuclear type I X-ray bursts and the discovery of burst oscillations at ~294Hz during three of them. Finally, we report on a faint and short outburst precursor, which occurred about two months before the main outburst. Our results on the broad-band spectral and variability properties allow us to firmly establish the atoll source nature of IGRJ17191-2821.
Type
Refereed
Accretion

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