I-LOFAR observations of the transient universe at low frequencies

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dc.contributor.advisorCallanan, Paul
dc.contributor.authorKyprianou, Jakeen
dc.date.accessioned2024-09-16T14:03:39Z
dc.date.available2024-09-16T14:03:39Z
dc.date.issued2023en
dc.date.submitted2023
dc.description.abstractThis work concerns using the Irish radio telescope, I-LOFAR, to observe the recent astronomical phenomenon of Fast Radio Bursts. Fast Radio Bursts are a novel type of radio transient, extremely powerful radio bursts that last only a few milliseconds. All but one of these bursts has come from beyond our Galaxy. The discovery of a repeating FRB source FRB180916B that produces bursts in a 5-day long window every 16 days prompted the question, could we use the Irish LOFAR telescope to observe these bursts? Recent detections of FRB180916B by a variety of telescopes across a range of frequencies has seen abnormal behaviour in bursts at low frequency. If I-LOFAR could be used to observe FRBs we could investigate this behaviour in other repeaters. In this thesis I investigate using I-LOFAR to make such a detection. Using 72 hours on FRB180916B and 8 hours on Galactic magnetar SGR1935+2154 which was found to be a Galactic FRB source. No bursts were detected above fluence thresholds of 200 Jy ms and 273 Jy ms respectively at 150MHz. I present theoretical arguments on the viability of detecting an FRB, based on observational properties of FRBs and the limitations of I-LOFAR. I also discuss the other implications of our non-detection based on new knowledge of the activities of these two sources. The consequences of a potential successful detection in the future are discussed as are possible strategies to maximise our chances of a detection. The data processing is performed using the REALtime Transient Acquisition cluster, REALTA, located at the site of I-LOFAR in Birr, Co. Offaly.en
dc.description.statusNot peer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationKyprianou, J. 2023. I-LOFAR observations of the Transient Universe at low frequencies. MSc Thesis, University College Cork.
dc.identifier.endpage79
dc.identifier.urihttps://hdl.handle.net/10468/16367
dc.language.isoenen
dc.publisherUniversity College Corken
dc.rights© 2023, Jake Kyprianou.
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectFRB
dc.subjectRadio astronomy
dc.subjectLOFAR
dc.subjectNeutron stars
dc.titleI-LOFAR observations of the transient universe at low frequencies
dc.typeMasters thesis (Research)en
dc.type.qualificationlevelMastersen
dc.type.qualificationnameMSc - Master of Scienceen
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