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PSR J1024-0719: A MILLISECOND PULSAR IN AN UNUSUAL LONG-PERIOD ORBIT

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dc.creator Lam, Michael T.
dc.creator Ferdman, Robert D.
dc.creator Arzoumanian, Zaven
dc.creator Fonseca, Emmanuel
dc.creator Spiewak, Renee
dc.creator Swiggum, Joseph
dc.creator Pennucci, Timothy T.
dc.creator Heber, Ulrich
dc.creator Lorimer, Duncan R.
dc.creator Levin, Lina
dc.creator Jones, Megan L.
dc.creator Jones, Glenn
dc.creator DeCesar, Megan E.
dc.creator Nice, David J.
dc.creator Miller, Adam A.
dc.creator Prince, Tom A.
dc.creator Irrgang, Andreas
dc.creator Crowter, Kathryn
dc.creator Stairs, Ingrid H.
dc.creator Ransom, Scott M.
dc.creator BEKLEN BARTO, Elif
dc.creator Kaplan, David L.
dc.creator Stovall, Kevin
dc.creator Kupfer, Thomas
dc.creator Ng, Cherry
dc.creator Ray, Paul S.
dc.creator Lynch, Ryan S.
dc.creator Ferrara, Elizabeth C.
dc.creator Kreuzer, Simon
dc.creator McLaughlin, Maura A.
dc.creator Dolch, Timothy
dc.creator Ellis, Justin A.
dc.creator Gentile, Peter A.
dc.creator Demorest, Paul B.
dc.creator Zhu, Weiwei
dc.date 2016-07-19T21:00:00Z
dc.date.accessioned 2020-10-06T12:02:55Z
dc.date.available 2020-10-06T12:02:55Z
dc.identifier f8d493a7-536f-40c3-b117-ba8bff60006b
dc.identifier 10.3847/0004-637x/826/1/86
dc.identifier https://avesis.sdu.edu.tr/publication/details/f8d493a7-536f-40c3-b117-ba8bff60006b/oai
dc.identifier.uri http://acikerisim.sdu.edu.tr/xmlui/handle/123456789/76633
dc.description PSR J1024-0719 is a millisecond pulsar that was long thought to be isolated. However, puzzling results concerning its velocity, distance, and low rotational period derivative have led to a reexamination of its properties. We present updated radio timing observations along with new and archival optical data which show that PSR J1024-0719 is most likely in a long-period (2-20 kyr) binary system with a low-mass (approximate to 0.4 M-circle dot), low-metallicity (Z approximate to -0.9 dex) main-sequence star. Such a system can explain most of the anomalous properties of this pulsar. We suggest that this system formed through a dynamical exchange in a globular cluster that ejected it into a halo orbit, which is consistent with the low observed metallicity for the stellar companion. Further astrometric and radio timing observations such as measurement of the third period derivative could strongly constrain the range of orbital parameters.
dc.language eng
dc.rights info:eu-repo/semantics/closedAccess
dc.title PSR J1024-0719: A MILLISECOND PULSAR IN AN UNUSUAL LONG-PERIOD ORBIT
dc.type info:eu-repo/semantics/article


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