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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/6801
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dc.contributor.authorJain, Chetana-
dc.contributor.authorPaul, Biswajit-
dc.contributor.authorSharma, Rahul-
dc.contributor.authorJaleel, Abdul-
dc.contributor.authorDutta, Anjan-
dc.date.accessioned2017-12-01T11:45:16Z-
dc.date.available2017-12-01T11:45:16Z-
dc.date.issued2017-06-
dc.identifier.citationMonthly Notices of the Royal Astronomical Society Letters , 2017, Vol. 468, L118-L122en_US
dc.identifier.issn1745-3933 (online)-
dc.identifier.issn1745-3925-
dc.identifier.urihttp://hdl.handle.net/2289/6801-
dc.descriptionOpen Accessen_US
dc.description.abstractWe present an X-ray timing analysis of the transient X-ray binary MXB 1658−298, using data obtained from the RXTE and XMM–Newton observatories. We have made 27 new mid-eclipse time measurements from observations made during the two outbursts of the source. These new measurements have been combined with the previously known values to study long-term changes in orbital period of the binary system. We have found that the mid-eclipse timing record of MXB 1658−298 is quite unusual. The long-term evolution of mid-eclipse times indicates an overall orbital period decay with a time-scale of –6.5(7) × 107 yr. Over and above this orbital period decay, the O−C residual curve also shows a periodic residual on shorter time-scales. This sinusoidal variation has an amplitude of ∼9 lt-s and a period of ∼760 d. This is indicative of the presence of a third body around the compact X-ray binary. The mass and orbital radius of the third body are estimated to lie in the ranges 20.5–26.9 Jupiter mass and 750–860 lt-s, respectively. If true, then it will be the most massive circumbinary planet and also the smallest period binary known to host a planet.en_US
dc.language.isoenen_US
dc.publisherOxford University Press for The Royal Astronomical Societyen_US
dc.relation.urihttp://adsabs.harvard.edu/abs/2017MNRAS.468L.118Jen_US
dc.relation.urihttp://arxiv.org/abs/1703.04433en_US
dc.relation.urihttp://dx.doi.org/10.1093/mnrasl/slx039en_US
dc.rights2017 The authors & the Royal Astronomical Society.en_US
dc.subjectplanet star interactionsen_US
dc.subjecteclipsing starsen_US
dc.titleIndication of a massive circumbinary planet orbiting the Low Mass X-ray Binary MXB 1658-298.en_US
dc.typeArticleen_US
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