Detection of quasi-periodic micro-structure in three millisecond pulsars with the Large European Array for Pulsars

Liu, K.; Antoniadis, J.; Bassa, C. G.; Chen, S.; Cognard, I.; Gaikwad, M.; Hu, H.; Jang, J.; Janssen, G. H.; Karuppusamy, R.; Kramer, M.; Lee, K. J.; Main, R. A.; Mall, G.; Mckee, J. W.; Mickaliger, M. B.; Perrodin, D.; Sanidas, S. A.; Stappers, B. W.; Wang, L.; Zhu, W. W.; Burgay, M.; Concu, R.; Corongiu, A.; Melis, A.; Pilia, M.; Possenti, A.

Abstract

We report on the detection of quasi-periodic micro-structure in three millisecond pulsars (MSPs), PSRs J1022+1001, J2145-0750, and J1744-1134, using high time resolution data acquired with the Large European Array for Pulsars at a radio frequency of 1.4 GHz. The occurrence rate of quasi-periodic micro-structure is consistent among pulses with different peak flux densities. Using an auto-correlation analysis, we measure the periodicity and width of the micro-structure in these three pulsars. The detected micro-structure from PSRs J1022+1001 and J1744-1134 is often highly linearly polarized. In PSR J1022+1001, the linear polarization position angles of micro-structure pulses are in general flat with a small degree of variation. Using these results, we further examine the frequency and rotational period dependency of micro-structure properties established in previous work, along with the angular beaming and temporal modulation models that explain the appearance of micro-structure. We also discuss a possible link of micro-structure to the properties of some of the recently discovered fast radio bursts which exhibit a very similar emission morphology.

Citation

Liu, K., Antoniadis, J., Bassa, C. G., Chen, S., Cognard, I., Gaikwad, M., …Possenti, A. (2022). Detection of quasi-periodic micro-structure in three millisecond pulsars with the Large European Array for Pulsars. Monthly notices of the Royal Astronomical Society, 513(3), 4037-4044. https://doi.org/10.1093/mnras/stac1082

• Journal Article Type: Article
• Acceptance Date: Apr 13, 2022
• Online Publication Date: Apr 27, 2022
• Publication Date: Jul 1, 2022
• Deposit Date: Nov 29, 2022
• Publicly Available Date: Dec 14, 2022
• Journal: Monthly Notices of the Royal Astronomical Society
• Print ISSN: 0035-8711
• Electronic ISSN: 1365-2966
• Publisher: Oxford University Press
• Peer Reviewed: Peer Reviewed
• Volume: 513
• Issue: 3
• Pages: 4037-4044
• DOI: https://doi.org/10.1093/mnras/stac1082
• Keywords: Methods: data analysis; Pulsars: individual (PSR J1022+1001); Pulsars: individual (PSR J2145−0750); Pulsars: individual (PSR J1744−1134); (transients:) fast radio bursts
• Public URL: https://hull-repository.worktribe.com/output/4134730