dc.contributor.author | Cognard, I. | |
dc.contributor.author | Venter, C. | |
dc.contributor.author | Guillemot, L. | |
dc.contributor.author | Johnson, T.J. | |
dc.contributor.author | Smith, D.A. | |
dc.contributor.author | Fermi LAT | |
dc.date.accessioned | 2014-05-02T10:34:59Z | |
dc.date.available | 2014-05-02T10:34:59Z | |
dc.date.issued | 2011 | |
dc.identifier.citation | Cognard, I. et al. 2011. Discovery of two millisecond pulsars in Fermi sources with the nançay radio telescope. Astrophysical journal, 732(1): Article no 47. [https://doi.org/10.1088/0004-637X/732/1/47] | en_US |
dc.identifier.issn | 0004-637X | |
dc.identifier.issn | 1538-4357 (Online) | |
dc.identifier.uri | http://hdl.handle.net/10394/10476 | |
dc.identifier.uri | https://doi.org/10.1088/0004-637X/732/1/47 | |
dc.identifier.uri | https://iopscience.iop.org/article/10.1088/0004-637X/732/1/47/pdf | |
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.language.iso | en | en_US |
dc.publisher | IOP Publishing | en_US |
dc.rights | © 2011. The American Astronomical Society. All rights reserved. | |
dc.subject | Gamma rays: general | en_US |
dc.subject | Pulsars: general | en_US |
dc.subject | Pulsars: individual (J2017+0603, J2302+4442) | en_US |
dc.title | Discovery of two millisecond pulsars in Fermi sources with the nançay radio telescope | en_US |
dc.type | Article | en_US |
dc.contributor.researchID | 12006653 - Venter, Christo | |