您当前的位置: > 详细浏览

Atypical radio pulsations from magnetar SGR 1935+2154

请选择邀稿期刊:
摘要: Magnetars are neutron stars with extremely strong magnetic fields, frequently powering high-energy activity in X-rays. Pulsed radio emission following some X-ray outbursts have been detected, albeit its physical origin is unclear. It has long been speculated that the origin of magnetars' radio signals is different from those from canonical pulsars, although convincing evidence is still lacking. Five months after magnetar SGR 1935+2154's X-ray outburst and its associated Fast Radio Burst (FRB) 20200428, a radio pulsar phase was discovered. Here we report the discovery of X-ray spectral hardening associated with the emergence of periodic radio pulsations from SGR 1935+2154 and a detailed analysis of the properties of the radio pulses. The complex radio pulse morphology, which contains both narrow-band emission and frequency drifts, has not been seen before in other magnetars, but is similar to those of repeating FRBs - even though the luminosities are many orders of magnitude different. The observations suggest that radio emission originates from the outer magnetosphere of the magnetar, and the surface heating due to the bombardment of inward-going particles from the radio emission region is responsible for the observed X-ray spectral hardening.
  • 来自: 王培
  • 分类: 天文学 >> 天文学
  • 说明: 47 pages, 11 figures
  • 引用: ChinaXiv:202401.00030 (或此版本 ChinaXiv:202401.00030V1)
    DOI:10.12074/202401.00030V1
    CSTR:32003.36.ChinaXiv.202401.00030.V1
  • 推荐引用方式: Pei Wang,Jian Li,Long Ji,Xian Hou,Erbil Gugercinoglu,Di Li,Diego F. Torres,Yutong Chen,Jiarui Niu,Weiwei Zhu,Bing Zhang,En-wei Liang,Li Zhang,Mingyu Ge,Zigao Dai,Lin Lin,Jinlin Han,Yi Feng,Chenhui Niu,Yongkun Zhang,Dengjiang Zhou,Heng Xu,Chunfeng Zhang,Jinchen Jiang,Chenchen Miao,Mao Yuan,Weiyang Wang,Youling Yue,Yunsheng Wu,Yabiao Wang,Chengjie Wang,Zhenye Gan,Yuxi Li,Zhongyi Sun,Mingmin Chi.(2023).Atypical radio pulsations from magnetar SGR 1935+2154.中国科学院科技论文预发布平台.[ChinaXiv:202401.00030] (点此复制)

版本历史

[V1] 2023-12-29 08:23:24 ChinaXiv:202401.00030V1 下载全文

相关论文推荐

点击下载全文
预览
同行评议状态
待评议
许可声明
metrics指标
  •  点击量379
  •  下载量81
评论
分享
申请专家评阅