Detection of quasi-periodic micro-structure in three millisecond pulsars with the Large European Array for Pulsars
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 polarised. In PSR J1022+1001, the linear polarisation 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 explains 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.
Keywords
Cite
@article{arxiv.2206.10045,
title = {Detection of quasi-periodic micro-structure in three millisecond pulsars with the Large European Array for Pulsars},
author = {K. Liu and J. Antoniadis and C. G. Bassa and S. Chen and I. Cognard and M. Gaikwad and H. Hu and J. Jang and G. H. Janssen and R. Karuppusamy and M. Kramer and K. J. Lee and R. A. Main and G. Mall and J. W. McKee and M. B. Mickaliger and D. Perrodin and S. A. Sanidas and B. W. Stappers and L. Wang and W. W. Zhu and M. Burgay and R. Concu and A. Corongiu and A. Melis and M. Pilia and A. Possenti},
journal= {arXiv preprint arXiv:2206.10045},
year = {2022}
}
Comments
8 pages, 6 figures, 1 table, published in MNRAS