Detection of Millihertz Quasi-Periodic Oscillations in the X-Ray Binary 1RXS J180408.9$-$342058

Abstract

Millihertz quasi-periodic oscillations (mHz QPOs) observed in neutron-star low-mass X-ray binaries (NS LMXBs) are generally explained as marginally stable thermonuclear burning on the neutron star surface. We report the discovery of mHz QPOs in an XMM-Newton observation of the transient 1RXS J180408.9$-$342058, during a regular bursting phase of its 2015 outburst. We found significant periodic signals in the March observation, with frequencies in the range $5-8\mathrm{mHz}$, superimposed on a strong $\sim 1/f$ power-law noise continuum. Neither the QPO signals nor the power-law noise were present during the April observation, which exhibited a $2.5\times$ higher luminosity and had correspondingly more frequent bursts. When present, the QPO signal power decreases during bursts and disappears afterwards, similar to the behaviour in other sources. 1RXS J180408.9$-$342058 is the eighth source known to date that exhibits such QPOs driven by thermonuclear burning. We examine the range of properties of the QPO signals in different sources. Whereas the observed oscillation profile is similar to that predicted by numerical models, the amplitudes are significantly higher, challenging their explanation as originating from marginally stable burning.

arXiv comment6 pages, 6 figures, 1 table, accepted by MNRAS

References in corpus (20)

• A simple test for periodic signals in red noise
• Models for Type I X-Ray Bursts with Improved Nuclear Physics
• Stingray: A Modern Python Library For Spectral Timing
• The faint "heartbeats" of IGR J17091-3624: an exceptional black-hole candidate
• The Multi-INstrument Burst ARchive (MINBAR)
• How Do Z and Atoll X-ray Binaries Differ?
• New class of low frequency QPOs: signature of nuclear burning or accretion disk instabilities?
• Millihertz Quasi-Periodic Oscillations from Marginally Stable Nuclear Burning on an Accreting Neutron Star
• Millihertz quasi-periodic oscillations and thermonuclear bursts from Terzan 5: A showcase of burning regimes
• Millihertz Oscillation Frequency Drift Predicts the Occurrence of Type I X-ray Bursts
• NuSTAR and XMM-Newton Observations of the Neutron Star X-ray Binary 1RXS J180408.9-34205
• NICER Discovers mHz Oscillations in the "Clocked" Burster GS 1826-238
• 1RXS J180408.9-342058: an ultra compact X-ray binary candidate with a transient jet
• New insights on the puzzling LMXB 1RXS J180408.9-342058: the intermediate state, the clocked type-I X-ray bursts and much more
• Discovery of millihertz quasi-periodic oscillations in the X-ray binary EXO 0748--676
• Millihertz quasi-periodic oscillations in 4U 1636-53 associated with bursts with positive convexity only
• Rapid X-ray variability properties during the unusual very hard state in neutron-star low-mass X-ray binaries
• Discovery of a soft X-ray 8 mHz QPO from the accreting millisecond pulsar IGR J00291+5934
• New orbital ephemerides for the dipping source 4U 1323-619: constraining the distance to the source
• The Influence of Stellar Spin on Ignition of Thermonuclear Runaways

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