The LOFAR Tied-Array All-Sky Survey: Timing of 35 radio pulsars and an overview of the properties of the LOFAR pulsar discoveries

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dc.contributor.authorSerylak, M.
dc.contributor.authorvan der Wateren, E.
dc.contributor.authorBassa, C. G.
dc.contributor.authorCooper, S.
dc.contributor.authorGrießmeier, J.-M.
dc.contributor.authorStappers, B. W.
dc.contributor.authorHessels, J. W. T.
dc.date.accessioned2023-04-14T11:28:48Z
dc.date.available2023-04-14T11:28:48Z
dc.date.issued2023
dc.description.abstractThe LOFAR Tied-Array All-Sky Survey (LOTAAS) is the most sensitive untargeted radio pulsar survey performed at low radio frequencies (119−151 MHz) to date and has discovered 76 new radio pulsars, including the 23.5-s pulsar J0250+5854, which up until recently was the slowest spinning radio pulsar known. In this paper, we report on the timing solutions of 35 pulsars discovered by LOTAAS, which include a nulling pulsar and a mildly recycled pulsar, and thereby complete the full timing analysis of the LOTAAS pulsar discoveries. We give an overview of the findings from the full LOTAAS sample of 76 pulsars, discussing their pulse profiles, radio spectra, and timing parameters. We found that the pulse profiles of some of the pulsars show profile variations in time or frequency, and while some pulsars show signs of scattering, a large majority display no pulse broadening. The LOTAAS discoveries have on average steeper radio spectra and longer spin periods (1.4×), as well as lower spin-down rates (3.1×) compared to the known pulsar population. We discuss the cause of these differences and attribute them to a combination of selection effects of the LOTAAS survey as well as previous pulsar surveys, though we cannot rule out that older pulsars tend to have steeper radio spectra.en_US
dc.identifier.citationder Wateren, E. V., Bassa, C. G., Cooper, S., Grießmeier, J. M., Stappers, B. W., T. Hessels, J. W., Kondratiev, V. I., Michilli, D., Tan, C. M., Tiburzi, C., Weltevrede, P., Nielsen, A. S. B., Carozzi, T. D., Ciardi, B., Cognard, I., Dettmar, R. J., Karastergiou, A., Kramer, M., Künsemöller, J., . . . Wucknitz, O. (2023, January 26). The LOFAR Tied-Array All-Sky Survey: Timing of 35 radio pulsars and an overview of the properties of the LOFAR pulsar discoveries | Astronomy & Astrophysics (A&A). The LOFAR Tied-Array All-Sky Survey: Timing of 35 Radio Pulsars and an Overview of the Properties of the LOFAR Pulsar Discoveries | Astronomy & Astrophysics (a&A). https://doi.org/10.1051/0004-6361/202245122en_US
dc.identifier.urihttps://doi.org/10.1051/0004-6361/202245122
dc.identifier.urihttp://hdl.handle.net/10566/8793
dc.publisherAstronomy& Astrophysicsen_US
dc.subjectpulsars: generalen_US
dc.subjectAstronomyen_US
dc.subjectPhysicsen_US
dc.subjectCosmologyen_US
dc.titleThe LOFAR Tied-Array All-Sky Survey: Timing of 35 radio pulsars and an overview of the properties of the LOFAR pulsar discoveriesen_US
dc.typeArticleen_US

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