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We report on the discovery of a transient X-ray pulsars, located in the Small Magellanic Cloud, with a pulse period of 292 s. A series of Chandra pointings fortuitously recorded in 2010 April-May the occurrence of a two-weeks-long outburst,…

High Energy Astrophysical Phenomena · Physics 2013-08-06 P. Esposito , G. L. Israel , L. Sidoli , G. A. Rodríguez Castillo , N. Masetti , P. D'Avanzo , S. Campana

We present long-term optical and RXTE data of two X-ray binary pulsars in the Small Magellanic Cloud, SXP46.6 and SXP6.85. The optical light curves of both sources show substantial (~0.5-0.8 mag) changes over the time span of the…

Astrophysics · Physics 2009-11-13 K. E. McGowan , M. J. Coe , M. P. E. Schurch , R. H. D. Corbet , J. L. Galache , A. Udalski

Optical and X-ray observations are presented here of a newly reported X-ray transient system in the Small Magellanic Cloud. The data reveal many previously unknown X-ray detections of this system and clear evidence for a 49.995d binary…

Astrophysics · Physics 2019-08-14 M. J. Coe , M. Schurch , R. H. D. Corbet , J. Galache , V. A. McBride , L. J. Townsend , A. Udalski , )

An XMM-Newton target of opportunity observation of the field around the transient 18.37 s pulsar XTE J0055-727 in the Small Magellanic Cloud (SMC) revealed two bright, long-period X-ray pulsars in the EPIC data. A new pulsar, XMMU…

Astrophysics · Physics 2009-11-10 F. Haberl , W. Pietsch , N. Schartel , P. Rodriguez , R. H. D. Corbet

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…

Astrophysics · Physics 2009-11-10 W. A. Majid , R. C. Lamb , D. J. Macomb

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…

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…

High Energy Astrophysical Phenomena · Physics 2015-05-27 M. J. Coe , F. Haberl , R. Sturm , W. Pietsch , L. J. Townsend , E. S. Bartlett , M. Filipovic , A. Udalski , R. H. D. Corbet , A. Tiengo , M. Ehle , J. L. Payne , D. Burton

(abridged) We analysed eight XMM-Newton observations toward the Small Magellanic Cloud (SMC), performed between October 2006 and June 2007, to investigate high mass X-ray binary systems. We found new X-ray binary pulsars with periods of 202…

Astrophysics · Physics 2009-11-13 F. Haberl , P. Eger , W. Pietsch

We present an optical and X-ray study of four Be/X-ray binaries located in the Small Magellanic Cloud (SMC). OGLE I-band data of up to 11 years of semi-continuous monitoring has been analysed for SMC X-2, SXP172 and SXP202B, providing both…

Solar and Stellar Astrophysics · Physics 2015-05-20 M. P. E. Schurch , M. J. Coe , V. A. McBride , L. J. Townsend , A. Udalski , F. Haberl , R. H. D. Corbet

The Small Magellanic Cloud (SMC) Be/X-ray binary pulsar SXP6.85 = XTE J0103-728 underwent a large Type II outburst beginning on 2008 August 10. The source was consistently seen for the following 20 weeks (MJD = 54688 - 54830). We present…

High Energy Astrophysical Phenomena · Physics 2015-05-14 L. J. Townsend , M. J. Coe , V. A. McBride , A. J. Bird , M. P. E. Schurch , R. H. D. Corbet , F. Haberl , J. L. Galache , A. Udalski

We present X-ray and optical data on the Be/X-ray binary (BeXRB) pulsar IGR J01054-7253 = SXP11.5 in the Small Magellanic Cloud (SMC). Rossi X-ray Timing Explorer (RXTE) observations of this source in a large X-ray outburst reveal an 11.483…

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…

High Energy Astrophysical Phenomena · Physics 2015-06-22 R. Sturm , F. Haberl , G. Vasilopoulos , E. S. Bartlett , P. Maggi , A. Rau , J. Greiner , A. Udalski

We present a detailed optical and X-ray study of the 2013 outburst of the Small Magellanic Cloud Be/X-ray binary SXP7.92, as well as an overview of the last 18 years of observations from OGLE, RXTE, Chandra and XMM-Newton. We revise the…

High Energy Astrophysical Phenomena · Physics 2017-01-18 E. S. Bartlett , M. J. Coe , G. L. Israel , J. S. Clark , P. Esposito , V. D'Elia , A. Udalski

Rossi X-Ray Timing Explorer observations of the Small Magellanic Cloud have revealed a previously unknown transient X-ray pulsar with a pulse period of 95s. Provisionally designated XTE SMC95, the pulsar was detected in three Proportional…

Astrophysics · Physics 2009-11-07 S. Laycock , R. H. D. Corbet , D. Perrodin , M. J. Coe , F. E. Marshall , C. Markwardt

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…

High Energy Astrophysical Phenomena · Physics 2015-06-15 L. J. Townsend , S. P. Drave , A. B. Hill , M. J. Coe , R. H. D. Corbet , A. J. Bird

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…

To investigate candidates for Be/X-ray binaries in the Small Magellanic Cloud (SMC), we observed a region around the emission nebula N19 with XMM-Newton in October 2006. We analysed the EPIC data of the detected point sources to derive…

Astrophysics · Physics 2009-11-13 F. Haberl , P. Eger , W. Pietsch , R. H. D. Corbet , M. Sasaki

To confirm faint Be/X-ray binary candidates from the XMM-Newton survey of the Small Magellanic Cloud, we searched for X-ray outbursts in archival ROSAT observations. We found that RXJ0123.4-7321 was much brighter when detected with ROSAT…

High Energy Astrophysical Phenomena · Physics 2016-08-31 R. Sturm , F. Haberl , W. Pietsch , A. Udalski

The number of known Be/X-ray binaries in the Large Magellanic Cloud is small compared to the observed population of the Galaxy or the Small Magellanic Cloud. The discovery of a system in outburst provides the rare opportunity to measure its…

High Energy Astrophysical Phenomena · Physics 2015-06-04 R. Sturm , F. Haberl , A. Rau , E. S. Bartlett , X. -L. Zhang , P. Schady , W. Pietsch , J. Greiner , M. J. Coe , A. Udalski

We present simultaneous, multi-wavelength observations of the Small Magellanic Cloud Be/XRB IGR J01217-7257 (=SXP 2.16) during outbursts in 2014, 2015 and 2016. We also present the results of RXTE observations of the Small Magellanic Cloud…

High Energy Astrophysical Phenomena · Physics 2017-01-18 C. M. Boon , A. J. Bird , M. J. Coe , R. H. D. Corbet , P. A. Evans , J. A. Kennea , H. A. Krimm , S. G. T. Laycock , A. Udalski
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