Discovery of burst oscillations in the intermittent accretion-powered millisecond pulsar HETE J1900.1-2455

Abstract

We report the discovery of burst oscillations from the intermittent accretion-powered millisecond pulsar (AMP) HETE J1900.1-2455, with a frequency approximately 1 Hz below the known spin frequency. The burst oscillation properties are far more similar to those of the non-AMPs and Aql X-1 (an intermittent AMP with a far lower duty cycle), than those of the AMPs SAX J1808.4-3658 and XTE J1814-338. We discuss the implications for models of the burst oscillation and intermittency mechanisms.

4 pages, 4 figures, submitted to ApJ Letters

References in corpus (11)

• Thermonuclear (type-I) X-ray bursts observed by the Rossi X-ray Timing Explorer
• Six new candidate ultracompact X-ray binaries
• Discovery of coherent millisecond X-ray pulsations in Aql X-1
• Intermittent millisecond X-ray pulsations from the neutron-star X-ray transient SAX J1748.9-2021 in the globular cluster NGC 6440
• Intermittent pulsations in an accretion-powered millisecond pulsar
• Discovery of 442-Hz Pulsations from an X-ray Source in the Globular Cluster NGC 6440
• The energy dependence of burst oscillations from the accreting millisecond pulsar XTE J1814-338
• Coherence of burst oscillations and accretion-powered pulsations in the accreting millisecond pulsar XTE J1814-338
• Evolution of the bursting-layer wave during a Type 1 X-ray burst
• Breaking the AMSP mould: the increasingly strange case of HETE J1900.1-2455
• Lighthouses with two lights: burst oscillations from the accretion-powered millisecond pulsars

Cited by in corpus (20)

• Thermonuclear burst oscillations
• Evidence for accretion rate change during type I X-ray bursts
• The Multi-INstrument Burst ARchive (MINBAR)
• Determining neutron star masses and radii using energy-resolved waveforms of X-ray burst oscillations
• Observational Constraints on Neutron Star Masses and Radii
• Accreting Millisecond X-Ray Pulsars
• Measurement of neutron star parameters: a review of methods for low-mass X-ray binaries
• The accretion flow to the intermittent accreting ms pulsar, HETE J1900.1-2455, as observed by XMM-Newton and RXTE
• Spin frequency distributions of binary millisecond pulsars
• Implications of burst oscillations from the slowly rotating accreting pulsar IGR 17480-2446 in the globular cluster Terzan 5
• Type I X-ray bursts and burst oscillations in the accreting millisecond X-ray pulsar IGR J17511-3057
• Broad-band spectral analysis of the accreting millisecond X-ray pulsar SAX J1748.9-2021
• A uniform search for thermonuclear burst oscillations in the RXTE legacy dataset
• Detection of burning ashes from thermonuclear X-ray bursts
• Ultra-compact X-ray binaries as dual-line gravitational-wave sources
• Relativistic ocean $r$-modes during type-I X-ray bursts
• A Deep Pulse Search in Eleven Low Mass X-Ray Binaries
• Nuclear-powered X-ray millisecond pulsars
• A model-independent comparison of the variability of accreting neutron stars and black holes
• Possible twin kHz Quasi Periodic Oscillations in the accreting millisecond X-ray Pulsar IGR J17511-3057