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相关论文: Discovery of an accreting millisecond pulsar in th…

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I present an observational review of the five currently known accretion-driven millisecond X-ray pulsars. A prominent place in this review is given to SAX J1808.4-3658; it was the first such system discovered and currently four outbursts…

天体物理学 · 物理学 2009-11-10 Rudy Wijnands

The Rossi X-ray Timing Explorer has observed five outbursts from the transient 2.5 ms accretion-powered pulsar SAX J1808.4-3658 during 1998-2008. We present a pulse timing study of the most recent outburst and compare it with the previous…

高能天体物理现象 · 物理学 2009-09-28 J. M. Hartman , A. Patruno , D. Chakrabarty , C. B. Markwardt , E. H. Morgan , M. van der Klis , R. Wijnands

We present a precise timing analysis of the accreting millisecond pulsar XTE J1814-338 during its 2003 outburst, observed by RXTE. A full orbital solution is given for the first time; Doppler effects induced by the motion of the source in…

天体物理学 · 物理学 2008-11-26 A. Papitto , T. Di Salvo , L. Burderi , M. T. Menna , G. Lavagetto , A. Riggio

We report the detection of 376.05 Hz (2.66 ms) coherent X-ray pulsations in NICER observations of a transient outburst of the low-mass X-ray binary IGR J17494-3030 in 2020 October/November. The system is an accreting millisecond X-ray…

The burst-only Swift J1749.4-2807 source was discovered in a high X-ray-active state, while during an {INTEGRAL observations of the Galactic bulge on 2010 April 10. Pulsations at 518 Hz were discovered in the RXTE data, confirming previous…

高能天体物理现象 · 物理学 2015-05-19 C. Ferrigno , E. Bozzo , M. Falanga , L. Stella , S. Campana , T. Belloni , G. L. Israel , L. Pavan , E. Kuulkers , A. Papitto

We discuss the spectral and timing properties of the accreting millisecond X-ray pulsar SWIFT J1756.9-2508 observed by XMM-Newton, NICER and NuSTAR during the X-ray outburst occurred in April 2018. The spectral properties of the source are…

高能天体物理现象 · 物理学 2018-09-05 A. Sanna , F. Pintore , A. Riggio , S. M. Mazzola , E. Bozzo , T. Di Salvo , C. Ferrigno , A. F. Gambino , A. Papitto , R. Iaria , L. Burderi

This study reports pulse variation analysis results for the forth discovered accretion-powered millisecond pulsar XTE J1807-294 during its 2003 outburst observed by {\it Rossi X-ray Timing Explorer}. The pulsation is significantly detected…

天体物理学 · 物理学 2009-11-13 Y. Chou , Y. Chung , C. P. Hu , T. C. Yang

SWIFT J1756.9-2508 is one of the few accreting millisecond pulsars (AMPs) discovered to date. We report here the results of our analysis of its aperiodic X-ray variability, as measured with the Rossi X-ray Timing Explorer during the 2007…

We report on the discovery of the new accreting millisecond X-ray pulsar SRGAJ144459.2-604207 using the SRG/ART-XC data. The source was observed twice in February 2024 during the declining phase of the outburst. Timing analysis revealed a…

Eight Accreting Millisecond X-ray Pulsars (AMXPs) are known to date. Optical and NIR observations carried out during quiescence give a unique opportunity to constrain the nature of the donor star and to investigate the origin of the…

太阳与恒星天体物理 · 物理学 2015-05-14 P. D'Avanzo , S. Campana , J. Casares , S. Covino , G. L. Israel , L. Stella

Swift J1749.4-2807 is the only known eclipsing accreting millisecond X-ray pulsar. In this paper, we report on 7 thermonuclear (Type-I) X-ray bursts observed by NICER during its 2021 outburst. The first 6 bursts show slow rises and long…

We present a timing solution for the 598.89 Hz accreting millisecond pulsar, IGR J00291+5934, using Rossi X-ray Timing Explorer data taken during the two outbursts exhibited by the source on 2008 August and September. We estimate the…

高能天体物理现象 · 物理学 2015-05-19 A. Papitto , A. Riggio , L. Burderi , T. Di Salvo , A. D'Aí , R. Iaria

We report X-ray imaging, timing, and spectral studies of XTE J1810-197, a 5.54s pulsar discovered by Ibrahim et al. (2003) in recent RXTE observations. In a set of short exposures with the Chandra HRC camera we detect a strongly modulated…

天体物理学 · 物理学 2009-11-10 E. V. Gotthelf , J. P. Halpern , M. Buxton , C. Bailyn

Pulsations from the high mass X-ray binary AXJ1910.7+0917 were discovered during Chandra observations performed in 2011 (Israel et al. 2016). We report here more details on this discovery and discuss the source nature. The period of the…

高能天体物理现象 · 物理学 2017-06-21 L. Sidoli , G. L. Israel , P. Esposito , G. A. Rodriguez Castillo , K. Postnov

SwiftJ0243.6+6124, the first Galactic ultra-luminous X-ray pulsar, was observed during its 2017-2018 outburst with \emph{AstroSat} at both sub- and super-Eddington levels of accretionwith X-ray luminosities of $L_{X}{\sim}7{\times}10^{37}$…

We report the discovery of burst oscillations at the spin frequency in ten thermonuclear bursts from the accreting millisecond X-ray pulsar (AMXP) IGR J17511-3057. The burst oscillation properties are, like those from the persistent AMXPs…

高能天体物理现象 · 物理学 2015-05-19 D. Altamirano , A. Watts , M. Linares , C. B. Markwardt , T. Strohmayer , A. Patruno

Millisecond spinning, low magnetic field neutron stars are believed to attain their fast rotation in a 0.1-1 Gyr-long phase during which they accrete matter endowed with angular momentum from a low-mass companion star. Despite extensive…

The accreting millisecond pulsar SAX J1808.4-3658 has shown a peculiar orbital evolution in the past with an orbital expansion much faster than expected from standard binary evolutionary scenarios. Previous limits on the pulsar spin…

高能天体物理现象 · 物理学 2015-06-03 A. Patruno , P. Bult , A. Gopakumar , J. M. Hartman , R. Wijnands , M. van der Klis , D. Chakrabarty

We report the discovery of 0.59 s X-ray pulsations from the low-mass X-ray binary, 5.57 hr dipping and eclipsing ADC source 2A 1822-371. Pulse arrival time analysis indicates a circular orbit with e < 0.03 (95% confidence) and an asini for…

天体物理学 · 物理学 2009-11-06 Peter G. Jonker , Michiel van der Klis

We report the discovery of millisecond pulsations from the low-mass X-ray binary HETE J1900.1-2455 which was discovered by the detection of a type I X-ray burst by the High Energy Transient Explorer 2 (HETE-2). The neutron star emits…

天体物理学 · 物理学 2009-11-13 P. Kaaret , E. H. Morgan , R. Vanderspek , J. A. Tomsick