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Related papers: X-ray Pulsars in the Small Magellanic Cloud

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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…

Astrophysics · Physics 2009-11-13 M. J. Coe , I. Negueruela , V. A. McBride

A correlation of X-ray source and Halpha emission-line object catalogues in the Small Magellanic Cloud (SMC) shows that more than two thirds of the optically identified Be stars in Be/X-ray binaries are found as emission-line objects in the…

Astrophysics · Physics 2007-05-23 F. Haberl , M. Sasaki

We observed the newly discovered X-ray source Swift J053041.9-665426 in the X-ray and optical regime to confirm its proposed nature as a high mass X-ray binary. We obtained XMM-Newton and Swift X-ray data, along with optical observations…

High Energy Astrophysical Phenomena · Physics 2015-06-17 G. Vasilopoulos , P. Maggi , F. Haberl , R. Sturm , W. Pietsch , E. S. Bartlett , M. J. Coe

We have investigated the relation between the orbital periods ($\pb$) and the spin periods ($\ps$) of wind-fed X-ray pulsars in high-mass X-ray binaries (HMXBs), based on population synthesis calculations of the spin evolution of neutron…

Astrophysics · Physics 2008-11-26 Hai-Lang Dai , Xi-Wei Liu , Xiang-Dong Li

We have studied the Be/X-ray binary (BeXRB) pulsar eRASSU J050810.4-660653 recently discovered in the Large Magellanic Cloud (LMC). Timing and spectral features of the source have been discussed in detail using NuSTAR \& XMM-Newton…

High Energy Astrophysical Phenomena · Physics 2022-11-30 Manoj Ghising , Mohammed Tobrej , Ruchi Tamang , Binay Rai , Bikash Chandra Paul

There exists a special class of X-ray pulsars that exhibit very slow pulsation of $P_{\rm spin}>1000$ s in the high mass X-ray binaries (HMXBs). We have studied the temporal and spectral properties of these superslow pulsation neutron star…

High Energy Astrophysical Phenomena · Physics 2015-06-12 W. Wang

We have studied the very long-term temporal properties of the optical emission from Be X-ray binaries (BeX) in the Small Magellanic Cloud over a ~ 16 yr baseline, using light curves from the MACHO and OGLE databases. All the BeX in our…

Solar and Stellar Astrophysics · Physics 2015-05-20 A. F. Rajoelimanana , P. A. Charles , A. Udalski

The Magellanic Clouds, the closest star-forming galaxies to the Milky Way, offer an excellent environment to study high-mass X-ray binaries. While the Small Magellanic Cloud has been thoroughly investigated with over 120 systems identified,…

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

SXP4.78 was originally discovered in 2000 as a pulsar in the Small Magellanic Cloud (SMC) by the Rossi X-ray Timing Explorer (RXTE) but it was not spatially located at that time. A new detection in 2018 with the Neil Gehrels Swift…

High Energy Astrophysical Phenomena · Physics 2019-03-20 Itumeleng Monageng , Malcolm Coe , Lee Townsend , David Buckley , Vanessa McBride , Paul Roche , Jamie Kennea , Andrzej Udalski , Phil Evans

The EXTraS project to explore the X-ray Transient and variable Sky searches for coherent signals in the X-ray archival data of XMM-Newton. XMM-Newton performed more than 400 pointed observations in the region of the Large Magellanic Cloud…

Local-Group galaxies provide access to samples of X-ray source populations of whole galaxies. The XMM-Newton survey of the Small Magellanic Cloud (SMC) completely covers the bar and eastern wing with a 5.6 deg^2 area in the (0.2-12.0) keV…

High Energy Astrophysical Phenomena · Physics 2015-06-16 R. Sturm , F. Haberl , W. Pietsch , J. Ballet , D. Hatzidimitriou , D. A. H. Buckley , M. Coe , M. Ehle , M. D. Filipovic , N. La Palombara , A. Tiengo

The Large Magellanic Cloud (LMC) currently hosts around 23 high mass X-ray binaries (HMXBs) of which most are Be/X-ray binaries. The LMC XMM-Newton survey provided follow-up observations of previously known X-ray sources that were likely…

High Energy Astrophysical Phenomena · Physics 2017-12-20 N. van Jaarsveld , D. A. H. Buckley , V. A. McBride , F. Haberl , G. Vasilopoulos , C. Maitra , A. Udalski , B. Miszalski

(shortened) The SMC is ideally suited to investigating the recent star formation history from X-ray source population studies. It harbours a large number of Be/X-ray binaries, and the supernova remnants can be easily resolved with imaging…

High Energy Astrophysical Phenomena · Physics 2015-06-03 F. Haberl , R. Sturm , M. D. Filipovic , W. Pietsch , E. J. Crawford

We report on the discovery of four millisecond pulsars (MSPs) in the High Time Resolution Universe (HTRU) pulsar survey being conducted at the Parkes 64-m radio telescope. All four MSPs are in binary systems and are likely to have white…

Recent observations of the Small Magellanic Cloud (SMC) with Einstein Probe (EP) revealed a new transient X-ray source, most likely identified as Be/X-ray binary. To characterise the X-ray properties of EP J005146.9-730930 and in particular…

High Energy Astrophysical Phenomena · Physics 2025-07-24 F. Haberl , Y. Xu , C. Maitra , G. Vasilopoulos , W. Zhang , W. Yuan , C. Jin , H. N. Yang , L. Ducci , D. M. Kaltenbrunner , P. Maggi , A. Rau

We report the results of a survey of the Small Magellanic Cloud (SMC) for radio pulsars conducted with the 20-cm multibeam receiver of the Parkes 64-meter telescope. This survey targeted a more complete region of the SMC than a previous…

Astrophysics · Physics 2008-11-26 F. Crawford , V. M. Kaspi , R. N. Manchester , A. G. Lyne , F. Camilo , N. D'Amico

We report the discovery of a circular shell centred on the Be X-ray binary (BeXB) SXP 1323 in the Small Magellanic Cloud (SMC). The shell was detected in an Halpha image obtained with the Very Large Telescope (VLT). Follow-up spectroscopy…

Solar and Stellar Astrophysics · Physics 2019-03-06 V. V. Gvaramadze , A. Y. Kniazev , L. M. Oskinova

We have detected 523 sources in a survey of the Small Magellanic Cloud (SMC) Wing with Chandra. By cross-correlating the X-ray data with optical and near-infrared catalogues we have found 300 matches. Using a technique that combines X-ray…

We present evidence for a simple linear relationship between the orbital period and super-orbital period in ultra-luminous X-ray (ULX) pulsars, akin to what is seen in the population of disc-fed neutron star super-giant X-ray binary and…

High Energy Astrophysical Phenomena · Physics 2020-05-13 L. J. Townsend , P. A. Charles
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