Discovery of two millisecond pulsars in fermi sources with the nancay radio telescope

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dc.contributor.author Venter, Christo
dc.date.accessioned 2012-09-06T08:50:44Z
dc.date.available 2012-09-06T08:50:44Z
dc.date.issued 2011
dc.identifier.citation Venter, C. et al. 2011. Discovery of two millisecond pulsars in fermi sources with the nancay radio telescope. Astrophysical journal, 732(47):1-11. [http://iopscience.iop.org/0004-637X] en_US
dc.identifier.issn 0004-637X
dc.identifier.issn 1538-4357 (Online)
dc.identifier.uri http://hdl.handle.net/10394/7249
dc.description.abstract We report the discovery of two millisecond pulsars in a search for radio pulsations at the positions of Fermi-Large Area Telescope sources with no previously known counterparts, using the Nan¸cay Radio Telescope. The two millisecond pulsars, PSRs J2017+0603 and J2302+4442, have rotational periods of 2.896 and 5.192 ms and are both in binary systems with low-eccentricity orbits and orbital periods of 2.2 and 125.9 days, respectively, suggesting long recycling processes. Gamma-ray pulsations were subsequently detected for both objects, indicating that they power the associated Fermi sources in which they were found. The gamma-ray light curves and spectral properties are similar to those of previously detected gamma-ray millisecond pulsars. Detailed modeling of the observed radio and gamma-ray light curves shows that the gamma-ray emission seems to originate at high altitudes in their magnetospheres. Additionally, X-ray observations revealed the presence of an X-ray source at the position of PSR J2302+4442, consistent with thermal emission from a neutron star. These discoveries along with the numerous detections of radio-loud millisecond pulsars in gamma rays suggest that many Fermi sources with no known counterpart could be unknown millisecond pulsars. en_US
dc.description.uri http://dx.doi.org/10.1088/0004-637X/732/1/47
dc.description.uri http://iopscience.iop.org/0004-637X/732/1/47/
dc.language.iso en en_US
dc.publisher IOP Publishing en_US
dc.subject Gamma rays: general en_US
dc.subject pulsars: general en_US
dc.subject pulsars: individual (J2017+0603, J2303+4442) en_US
dc.title Discovery of two millisecond pulsars in fermi sources with the nancay radio telescope en_US
dc.type Article en_US

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