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., 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., …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