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相关论文: 4U 0115+63: phase lags and cyclotron resonant scat…

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We report a detailed timing and spectral analysis of the X-ray pulsar 2S~1417-624 using the data from Insight-HXMT during the 2018 outburst. The pulse profiles are highly variable with respect to both unabsorbed flux and energy. A…

高能天体物理现象 · 物理学 2024-10-31 Q. Liu , A. Santangelo , L. D. Kong , L. Ducci , L. Ji , W. Wang , M. M. Serim , C. Güngör , Y. L. Tuo , D. Serim

We present an analysis of the neutron star High Mass X-ray Binary (HMXB) 4U 1909+07 mainly based on Suzaku data. We extend the pulse period evolution, which behaves in a random-walk like manner, indicative of direct wind accretion. Studying…

高能天体物理现象 · 物理学 2015-06-11 F. Fuerst , K. Pottschmidt , I. Kreykenbohm , S. Mueller , M. Kuehnel , J. Wilms , R. E. Rothshild

Based on HXMT observations of EXO 2030+375 during its 2021 giant outburst, we report the analysis of pulse variations and the broadband X-ray spectrum, and find the presence of a potential cyclotron resonant scattering feature with the…

高能天体物理现象 · 物理学 2024-05-07 Wen Yang , Wei Wang , Prahlad R. Epili

We report the results of an analysis of data obtained with the INTEGRAL, Swift and RXTE observatories during the 2010 April and September outbursts of the X-ray pulsar RX J0440.9+4431. The temporal and spectral properties of the pulsar in a…

高能天体物理现象 · 物理学 2015-06-03 S. Tsygankov , R. Krivonos , A. Lutovinov

We report comprehensive spectral and temporal properties of the Be/X-ray binary pulsar SMC X-2 using X-ray observations during the 2015 and 2022 outbursts. The pulse profile of the pulsar is unique and strongly luminosity dependent. It…

高能天体物理现象 · 物理学 2023-03-21 G. K. Jaisawal , G. Vasilopoulos , S. Naik , C. Maitra , C. Malacaria , B. Chhotaray , K. C. Gendreau , S. Guillot , M. Ng , A. Sanna

We review the results of a timing analysis of the observations for ten bright X-ray pulsars (with fluxes >100 mCrab in the 20-100 keV energy band) that fell within the INTEGRAL field of view from 2003 to 2007. The dependence of the pulse…

高能天体物理现象 · 物理学 2015-05-13 A. A. Lutovinov , S. S. Tsygankov

We systematically analyzed the spectra of X-ray binary pulsars observed with GINGA (Mihara 1995). A new model NPEX (Negative and Positive power-laws EXponential) was introduced t o represent the pulsar continuum. Combining the NPEX…

高能天体物理现象 · 物理学 2014-01-22 Tatehiro Mihara , Kazuo Makishima , Fumiaki Nagase

OAO 1657-415 is an accreting X-ray pulsar with a high mass companion that has been observed by several telescopes over the years, in different orbital phases. Back in 1999, observations performed with Beppo-SAX lead to the detection of a…

高能天体物理现象 · 物理学 2022-03-08 Enzo A. Saavedra , Federico A. Fogantini , Jorge A. Combi , Federico García , Sylvain Chaty

We present a comprehensive timing and spectral studies of Be/X-ray binary pulsar EXO 2030+375 using extensive Rossi X-ray Timing Explorer observations from 1995 till 2011, covering numerous Type I and 2006 Type II outbursts. Pulse profiles…

高能天体物理现象 · 物理学 2017-11-08 Prahlad Epili , Sachindra Naik , Gaurava K. Jaisawal , Shivangi Gupta

We have studied the timing and spectral properties of the BeXB 4U 1901+03 during the 2019 outburst using \textit{NuSTAR}, \textit{Swift}, and \textit{NICER} observations. Flares are in all observations and were of tens to hundreds of…

高能天体物理现象 · 物理学 2021-09-08 Binay Rai , Bikash Chandra Paul

While there are many dynamical mechanisms and models that try to explain the origin and phenomenology of the quasi-periodic oscillations (QPOs) seen in the X-ray light curves of low-mass X-ray binaries, few of them address how the radiative…

高能天体物理现象 · 物理学 2016-10-17 Marcio G B de Avellar , Mariano Méndez , Diego Altamirano , Andrea Sanna , Guobao Zhang

BeppoSAX observed several galactic binary X-ray pulsars during the Science Verification Phase and in the first year of the regular program. The complex emission spectra of these sources are an ideal target for the BeppoSAX instrumentation,…

We report on the results of the longest uninterrupted observation of the Anomalous X-ray Pulsar 1RXS J1708-4009 obtained with the BeppoSAX satellite in August 2001. In the phase-resolved spectrum, corresponding to the rising part of the…

天体物理学 · 物理学 2009-11-10 Nanda Rea , Gian Luca Israel , Luigi Stella

We present the first detailed spectral and timing analysis of the High Mass X-ray Binary (HMXB) 4U 1909+07 with INTEGRAL and RXTE. 4U 1909+07 is detected with an average of 2.4cps in ISGRI, but shows flares up to ~50cps. The system shows a…

高能天体物理现象 · 物理学 2010-10-29 F. Fuerst , I. Kreykenbohm , L. Barragán , J. Wilms , R. E. Rothschild , S. Suchy , K. Pottschmidt

In June-September 2006 the Be/X-ray binary EXO 2030+375 experienced the second giant outburst since its discovery. The source was shown to have a complicated pulse-averaged X-ray spectral continuum with possible evidence of cyclotron…

天体物理学 · 物理学 2009-11-13 D. Klochkov , A. Santangelo , R. Staubert , C. Ferrigno

We report a time-resolved analysis of the accreting X-ray pulsar Cen X-3 using observations carried out by NuSTAR, which cover approximately two binary orbits in different intensity states. The pulse profile is relatively stable over the…

高能天体物理现象 · 物理学 2024-10-30 Qi Liu , Wei Wang , Andrea Santangelo , Lingda Kong , Long Ji , Lorenzo Ducci

Results on timing and spectral properties of the Be/X-ray binary pulsar 3A 0726-260 (4U 0728-25) are presented. The binary was observed on 2016 May 6-7 with the Large Area X-ray Proportional Counter (LAXPC) and Soft X-ray Telescope (SXT)…

高能天体物理现象 · 物理学 2020-09-30 Jayashree Roy , P. C. Agrawal , B. Singari , R. Misra

Cyclotron resonance scattering features observed in the spectra of some X-ray pulsars show significant changes of the line energy with the pulsar luminosity. At high luminosities, these variations are often associated with the onset and…

We report the results of a long observation of the anomalous X-ray pulsar 1RXS J170849-400910 obtained with the BeppoSAX satellite in August 2001. The best-fit phase-averaged spectrum was an absorbed power law plus blackbody model, with…

This work is devoted to the study of the broadband 0.8-79 keV spectral and timing properties of the poorly studied X-ray pulsar XTE J1859+083 during its 2015 outburst based on the data from the NuSTAR and Swift observatories. We show that…