A Search for Pulsars in Ultracompact X-ray Binary Systems
Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
We present a search for periodic pulsations in the X-ray emission of seven Ultracompact X-ray Binary (UCXB) systems, in which the coherent time domain resampling method was used to recover signals distorted by the target's orbital motion. While other UCXBs have been observed as X-ray pulsars, our targets still lack such a detection. We demonstrated the superior sensitivity of our search method over standard approaches, enabling us to find very faint signals at the cost of a large computing effort. However no pulsations were detected. Therefore we deduced stringent upper limits for the pulsed fraction in each observation, which are on the order of 0.5%.
Place, publisher, year, edition, pages
2013. , 30 p.
Technology, X-ray timing, ultracompact X-ray binary, millisecond pulsar, accreting millisecond pulsar, binary stars, pulsar, pulsar search, neutron star
IdentifiersURN: urn:nbn:se:ltu:diva-52417Local ID: 98abeac8-1780-4253-a2c8-70059d73827eOAI: oai:DiVA.org:ltu-52417DiVA: diva2:1025787
Subject / course
Student thesis, at least 30 credits
Space Engineering, master's level
Validerat; 20130613 (global_studentproject_submitter)2016-10-042016-10-04Bibliographically approved