A radio pulsar phase from SGR J1935+2154 provides clues to the magnetar FRB mechanism

被引：38

作者：

Zhu, Weiwei ^{[1
,2
]}

Xu, Heng ^{[1
,3
,4
]}

Zhou, Dejiang ^{[1
,5
]}

Lin, Lin ^{[2
,6
]}

Wang, Bojun ^{[1
,3
]}

Wang, Pei ^{[1
,2
]}

Zhang, Chunfeng ^{[1
,3
]}

Niu, Jiarui ^{[1
,5
]}

Chen, Yutong ^{[1
,5
]}

Li, Chengkui ^{[7
]}

Meng, Lingqi ^{[1
,5
]}

Lee, Kejia ^{[1
,3
,4
]}

Zhang, Bing ^{[8
,9
]}

Feng, Yi ^{[10
]}

Ge, Mingyu ^{[7
]}

Goegues, Ersin ^{[11
]}

Guan, Xing ^{[1
]}

Han, Jinlin ^{[1
]}

Jiang, Jinchen ^{[1
,3
]}

Jiang, Peng ^{[1
,12
]}

Kouveliotou, Chryssa ^{[13
]}

Li, Di ^{[1
,11
]}

Miao, Chenchen ^{[1
,5
]}

Miao, Xueli ^{[1
]}

Men, Yunpeng ^{[14
]}

Niu, Chenghui ^{[1
]}

Wang, Weiyang ^{[3
,5
]}

Wang, Zhengli ^{[14
]}

Xu, Jiangwei ^{[1
,3
]}

Xu, Renxin ^{[2
]}

Xue, Mengyao ^{[1
]}

Yang, Yuanpei ^{[15
]}

Yu, Wenfei ^{[16
]}

Yuan, Mao ^{[1
,5
]}

Yue, Youling ^{[1
]}

Zhang, Shuangnan ^{[7
]}

Zhang, Yongkun ^{[1
,5
]}

机构：

[1] Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China

[2] Beijing Normal Univ, Inst Frontiers Astron & Astrophys, Beijing 102206, Peoples R China

[3] Peking Univ, Dept Astron, Beijing 100871, Peoples R China

[4] Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China

[5] Chinese Acad Sci, Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[6] Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China

[7] Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China

[8] Univ Nevada, Nevada Ctr Astrophys, Las Vegas, NV 89154 USA

[9] Univ Nevada, Dept Phys & Astron, Las Vegas, NV 89154 USA

[10] Zhejiang Lab, Hangzhou 311121, Zhejiang, Peoples R China

[11] Sabanci Univ, Fac Engn & Nat Sci, TR-34956 Istanbul, Turkiye

[12] George Washington Univ, Dept Phys, 725 21st St NW, Washington, DC 20052 USA

[13] Max Planck Inst Radioastron, Auf Hugel 69, D-53121 Bonn, Germany

[14] GuangXi Univ, Sch Phys Sci & Technol, GuangXi Key Lab Relativist Astrophys, Naning 530004, Peoples R China

[15] Yunnan Univ, South Western Inst Astron Res, Kunming 650500, Yunnan, Peoples R China

[16] Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China

来源：

SCIENCE ADVANCES | 2023年 / 9卷 / 30期

关键词：

EMISSION; DISCOVERY; BURSTS;

D O I：

10.1126/sciadv.adf6198

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The megajansky radio burst, FRB 20200428, and other bright radio bursts detected from the Galactic source SGR J1935+2154 suggest that magnetars can make fast radio bursts (FRBs), but the emission site and mechanism of FRB-like bursts are still unidentified. Here, we report the emergence of a radio pulsar phase of the magnetar 5 months after FRB 20200428. Pulses were detected in 16.5 hours over 13 days using the Five-hundred-meter Aperture Spherical radio Telescope, with luminosities of about eight decades fainter than FRB 20200428. The pulses were emitted in a narrow phase window anti-aligned with the x-ray pulsation profile observed using the x-ray telescopes. The bursts, conversely, appear in random phases. This dichotomy suggests that radio pulses originate from a fixed region within the magnetosphere, but bursts occur in random locations and are possibly associated with explosive events in a dynamically evolving magnetosphere. This picture reconciles the lack of periodicity in cosmological repeating FRBs within the magnetar engine model.

引用

页数：12

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