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Context. About 120 Be/X-ray binaries (BeXBs) are known in the Small Magellanic Cloud (SMC); about half of them are pulsating with periods from a few to hundreds of seconds. SXP 1323 is one of the longest-period pulsars known in this galaxy.…

高能天体物理现象 · 物理学 2017-06-21 Stefania Carpano , Frank Haberl , Richard Sturm

Located in the Small Magellanic Cloud (SMC), SXP214 is an X-ray pulsar in a high mass X-ray binary system with a Be-star companion. A recent survey of the SMC under a Chandra X-ray Visionary program found the source in a transition when the…

XMM-Newton archival observations of the Be/X-ray binary candidate RX J0103.6-7201 revealed pulsations with a period of ~1323 s. This makes RX J0103.6-7201 the X-ray pulsar with the longest period known in the Small Magellanic Cloud (SMC).…

天体物理学 · 物理学 2009-11-10 F. Haberl , W. Pietsch

Spectroscopic observations taken with the VLT/UVES telescope/instrument are presented of the unusual Small Magellanic Cloud (SMC) X-ray binary system SXP 323 = AX J0051-733. This system shows a clear modulation at 0.71d in long term optical…

天体物理学 · 物理学 2009-11-13 M. J. Coe , I. Negueruela , V. A. McBride

During its performance verification phase, the soft X-ray instrument eROSITA aboard the Spektrum-Roentgen-Gamma(SRG) spacecraft observed large regions in the Magellanic Clouds, where almost 40 known high-mass X-ray binaries (HMXBs,…

高能天体物理现象 · 物理学 2022-05-18 F. Haberl , C. Maitra , S. Carpano , X. Dai , V. Doroshenko , K. Dennerl , M. J. Freyberg , M. Sasaki , A. Udalski , K. A. Postnov , N. I. Shakura

AX J0049.4-7323 is a Be/X-ray binary in the Small Magellanic Cloud hosting a ~750 s pulsar which has been observed over the last ~17 years by several X-ray telescopes. Despite numerous observations, little is known about its X-ray…

高能天体物理现象 · 物理学 2018-06-13 L. Ducci , P. Romano , C. Malacaria , L. Ji , E. Bozzo , A. Santangelo

We report on a peculiar X-ray binary pulsar IKT1 = RXJ0047.3-7312 observed with XMM-Newton in Oct. 2000. The X-ray spectrum is described by a two-component spectrum. The hard component has a broken power-law with respective photon indices…

天体物理学 · 物理学 2015-06-24 Masaru Ueno , Hiroya Yamaguchi , Shin-ichiro Takagi , Jun Yokogawa , Katsuji Koyama

We report pulsations in the X-ray flux of RX J0101.3-7211 in the Small Magellanic Cloud (SMC) with a period of 455+/-2 s in XMM-Newton EPIC-PN data. The X-ray spectrum can be described by a power-law with a photon index of 0.6+/-0.1. Timing…

天体物理学 · 物理学 2009-11-06 M. Sasaki , F. Haberl , S. Keller , W. Pietsch

We report on the discovery and analysis of an X-ray pulsar, AX J0058-7203, in the Small Magellanic Cloud. This pulsar exhibits coherent pulsations at P= 280.3 s with a double-peak structure. The X-ray spectrum is well fitted with a simple…

天体物理学 · 物理学 2015-06-24 Masahiro Tsujimoto , Kensuke Imanishi , Jun Yokogawa , Katsuji Koyama

In the course of the XMM-Newton survey of the Small Magellanic Cloud (SMC), a region to the east of the emission nebula N19 was observed in November 2009. To search for new candidates for high mass X-ray binaries the EPIC PN and MOS data of…

We report the results of AstroSat and NuSTAR observations of the Be/X-ray binary pulsar SXP 15.3 in the Small Magellanic Cloud during its outburst in late 2017, when the source reached a luminosity level of ~ 10^{38} erg s^{-1}, close to…

高能天体物理现象 · 物理学 2018-08-15 Chandreyee Maitra , Biswajit Paul , Frank Haberl , Georgios Vasilopoulos

We present a timing and spectral analysis of the variable X-ray source 3A 1954+319. Our analysis is mainly based on an outburst serendipitously observed during INTEGRAL Key Program observations of the Cygnus region in 2008 fall and on the…

高能天体物理现象 · 物理学 2011-06-15 F. Fürst , D. M. Marcu , K. Pottschmidt , V. Grinberg , J. Wilms , M. Cadolle Bel

In this paper we present the identification of two periodic X-ray signals coming from the direction of the Small Magellanic Cloud (SMC). On detection with the Rossi X-ray Timing Explorer (RXTE), the 175.4s and 85.4s pulsations were…

高能天体物理现象 · 物理学 2015-06-15 L. J. Townsend , S. P. Drave , A. B. Hill , M. J. Coe , R. H. D. Corbet , A. J. Bird

We report the serendipitous detection of a previously unreported pulsar from the direction of the Small Magellanic Cloud using data from the CHANDRA X-Ray Observatory. Because of the luminosity of about 1.5x10^35 ergs/s, its near lack of…

天体物理学 · 物理学 2010-05-12 R. C. Lamb , D. W. Fox , D. J. Macomb , T. A. Prince

We report on a new Be/X-ray pulsar binary located in the Wing of the Small Magellanic Cloud (SMC). The strong pulsed X-ray source was discovered with the Chandra and XMM-Newton X-ray observatories. The X-ray pulse period of 1062 s is…

XMM-Newton archival data for the Small Magellanic Cloud have been examined for the presence of previously undetected X-ray pulsars. One such pulsar, with a period of 202 s, is detected. Its position is consistent with an early B star in the…

天体物理学 · 物理学 2009-11-10 W. A. Majid , R. C. Lamb , D. J. Macomb

We identify a new candidate for a Be/X-ray binary in the XMM-Newton slew survey and archival Swift observations that is located in the transition region of the Wing of the Small Magellanic Cloud and the Magellanic Bridge. We investigated…

高能天体物理现象 · 物理学 2015-06-22 R. Sturm , F. Haberl , G. Vasilopoulos , E. S. Bartlett , P. Maggi , A. Rau , J. Greiner , A. Udalski

On 30th August 2006 SXP18.3 a high mass X-ray binary (HMXB) in the Small Magellanic Cloud (SMC) with an 18.3s pulse period was observed by Rossi X-ray Timing Explorer (RXTE). The source was seen continuously for the following 36 weeks. This…

SAX J0635.2+0533 is a binary pulsar with a very short pulsation period ($P$ = 33.8 ms) and a high long-term spin down ($\dot P$ $>$ 3.8$\times10^{-13}$ s s$^{-1}$), which suggests a rotation-powered (instead of an accretion-powered) nature…

高能天体物理现象 · 物理学 2017-06-28 N. La Palombara , S. Mereghetti

We study the timing and spectral properties of the Be/X-ray binary pulsar SXP 138 using four NuSTAR observations spanning 2016 to 2017. Analysis of the light curves using the Lomb-Scargle periodogram shows an increase in the spin period of…

高能天体物理现象 · 物理学 2025-04-11 Soham Pravin Sanyashiv , Sayantan Bhattacharya , Sudip Bhattacharyya
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