Statistical properties and lensing effect on the repeating fast radio burst FRB 180916.J0158+65

Author:

Wang Yu-Bin12ORCID,Kurban Abdusattar134,Zhou Xia134ORCID,Yu Yun-Wei5ORCID,Wang Na134

Affiliation:

1. Xinjiang Astronomical Observatory, Chinese Academy of Sciences , Urumqi 830011, China

2. University of Chinese Academy of Sciences , 19A Yuquan Road, Beijing 100049, China

3. Key Laboratory of Radio Astronomy, Chinese Academy of Sciences , Nanjing 210008, China

4. Xinjiang Key Laboratory of Radio Astrophysics , 150 Science1-Street, Urumqi 830011, China

5. Institute of Astrophysics, Central China Normal University , Wuhan 430079, China

Abstract

ABSTRACT FRB 180916.J0158+65 is a well-known repeating fast radio burst with a period ($16.35~\rm d$) and an active window ($5.0~\rm d$). We give out the statistical results of the dispersion measures and waiting times of bursts of FRB 180916.J0158+65. We find the dispersion measures at the different frequencies show a bimodal distribution. The peaking dispersion measures of the left mode of the bimodal distributions increase with frequency, but the right one is inverse. The waiting times also present the bimodal distribution, peaking at 0.05622 and 1612.91266 s. The peaking time is irrelevant to the properties of bursts, either for the preceding or subsequent burst. By comparing the statistical results with possible theoretical models, we suggest that FRB 180916.J0158+65 suffered from the plasma lensing effects in the propagation path. Moreover, this source may be originated from a highly magnetized neutron star in a high-mass X-ray binary.

Funder

National Natural Science Foundation of China

Chinese Academy of Sciences

Publisher

Oxford University Press (OUP)

Subject

Space and Planetary Science,Astronomy and Astrophysics

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