학술논문
Detection of quasi-periodic micro-structure in three millisecond pulsars with the Large European Array for Pulsars
Document Type
Working Paper
Author
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.
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Subject
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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.
Comment: 8 pages, 6 figures, 1 table, published in MNRAS
Comment: 8 pages, 6 figures, 1 table, published in MNRAS