Binary Millisecond Pulsar Discovery via Gamma-Ray Pulsations
2012 (English)In: Science, ISSN 0036-8075, E-ISSN 1095-9203, Vol. 338, no 6112, 1314-1317 p.Article in journal (Refereed) Published
Millisecond pulsars, old neutron stars spun up by accreting matter from a companion star, can reach high rotation rates of hundreds of revolutions per second. Until now, all such recycled rotation-powered pulsars have been detected by their spin-modulated radio emission. In a computing-intensive blind search of gamma-ray data from the Fermi Large Area Telescope (with partial constraints from optical data), we detected a 2.5-millisecond pulsar, PSR J1311-3430. This unambiguously explains a formerly unidentified gamma-ray source that had been a decade-long enigma, confirming previous conjectures. The pulsar is in a circular orbit with an orbital period of only 93 minutes, the shortest of any spin-powered pulsar binary ever found.
Place, publisher, year, edition, pages
2012. Vol. 338, no 6112, 1314-1317 p.
IdentifiersURN: urn:nbn:se:su:diva-84789DOI: 10.1126/science.1229054ISI: 000311991200058OAI: oai:DiVA.org:su-84789DiVA: diva2:581840