Frequency-dependent polarization of repeating fast radio bursts—implications for their origin-Reference-Cited by-同舟云学术

Frequency-dependent polarization of repeating fast radio bursts—implications for their origin

Published:2022-03-18 Issue:6586 Volume:375 Page:1266-1270
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Feng Yi¹²³^ORCID,Li Di¹²⁴^ORCID,Yang Yuan-Pei⁵^ORCID,Zhang Yongkun¹³^ORCID,Zhu Weiwei¹^ORCID,Zhang Bing⁶⁷^ORCID,Lu Wenbin⁸^ORCID,Wang Pei¹^ORCID,Dai Shi⁹^ORCID,Lynch Ryan S.¹⁰^ORCID,Yao Jumei¹¹^ORCID,Jiang Jinchen¹¹²^ORCID,Niu Jiarui¹³^ORCID,Zhou Dejiang¹³^ORCID,Xu Heng¹¹²^ORCID,Miao Chenchen¹³^ORCID,Niu Chenhui¹^ORCID,Meng Lingqi¹³^ORCID,Qian Lei¹^ORCID,Tsai Chao-Wei¹^ORCID,Wang Bojun¹¹²^ORCID,Xue Mengyao¹^ORCID,Yue Youling¹^ORCID,Yuan Mao¹³^ORCID,Zhang Songbo¹³^ORCID,Zhang Lei¹^ORCID

Affiliation:

1. National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, China.

2. Zhejiang Lab, Hangzhou, Zhejiang 311121, China.

3. School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, China.

4. National Astronomical Observatories, Chinese Academy of Sciences–University of KwaZulu-Natal Computational Astrophysics Centre, University of KwaZulu-Natal, Durban 4000, South Africa.

5. South-Western Institute for Astronomy Research, Yunnan University, Kunming, Yunnan 650504, China.

6. Department of Physics and Astronomy, University of Nevada, Las Vegas, NV 89154, USA.

7. Nevada Center for Astrophysics, University of Nevada, Las Vegas, NV 89154, USA.

8. Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544, USA.

9. School of Science, Western Sydney University, Penrith, NSW 2751, Australia.

10. Green Bank Observatory, Green Bank, WV 24401, USA.

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

12. School of Physics, Peking University, Beijing 100871, China.

13. Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210023, China.

Abstract

The polarization of fast radio bursts (FRBs), which are bright astronomical transient phenomena, contains information about their environments. Using wide-band observations with two telescopes, we report polarization measurements of five repeating FRBs and find a trend of lower polarization at lower frequencies. This behavior is modeled as multipath scattering, characterized by a single parameter, σ RM , the rotation measure (RM) scatter. Sources with higher σ RM have higher RM magnitude and scattering time scales. The two sources with the highest σ RM , FRB 20121102A and FRB 20190520B, are associated with compact persistent radio sources. These properties indicate a complex environment near the repeating FRBs, such as a supernova remnant or a pulsar wind nebula, consistent with their having arisen from young stellar populations.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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