The Astrophysical Journal Supplement Series (Jan 2024)
X-Ray Hardening Preceding the Onset of SGR 1935+2154's Radio Pulsar Phase
- Pei Wang,
- Jian Li,
- Long Ji,
- Xian Hou,
- Erbil Gügercinoğlu,
- Di Li,
- Diego F. Torres,
- Yutong Chen,
- Jiarui Niu,
- Wei-Wei Zhu,
- Bing Zhang,
- En-Wei Liang,
- Li Zhang,
- Mingyu Ge,
- Zigao Dai,
- Lin Lin,
- Jinlin Han,
- Yi Feng,
- Chenhui Niu,
- Yongkun Zhang,
- Dejiang Zhou,
- Heng Xu,
- Chunfeng Zhang,
- Jinchen Jiang,
- Chenchen Miao,
- Mao Yuan,
- Weiyang Wang,
- Dengke Zhou,
- Jianhua Fang,
- Youling Yue,
- Yunsheng Wu,
- Yabiao Wang,
- Chengjie Wang,
- Zhenye Gan,
- Yuxi Li,
- Zhongyi Sun,
- Mingmin Chi,
- Junshuo Zhang,
- Jinhuang Cao,
- Wanjin Lu,
- Yidan Wang
Affiliations
- Pei Wang
- ORCiD
- National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People's Republic of China ; [email protected]; Institute for Frontiers in Astronomy and Astrophysics, Beijing Normal University , Beijing 102206, People's Republic of China
- Jian Li
- ORCiD
- CAS Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China , Hefei 230026, People's Republic of China ; [email protected]; School of Astronomy and Space Science, University of Science and Technology of China , Hefei 230026, People's Republic of China
- Long Ji
- ORCiD
- School of Physics and Astronomy, Sun Yat-Sen University , Zhuhai, 519082, People's Republic of China
- Xian Hou
- ORCiD
- Yunnan Observatories, Chinese Academy of Sciences , Kunming 650216, People's Republic of China; Key Laboratory for the Structure and Evolution of Celestial Objects , Chinese Academy of Sciences, Kunming 650216, People's Republic of China
- Erbil Gügercinoğlu
- National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People's Republic of China ; [email protected]; Istanbul University , Faculty of Science, Department of Astronomy and Space Sciences, Beyazıt, 34119, Istanbul, Turkey
- Di Li
- ORCiD
- National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People's Republic of China ; [email protected]; Department of Astronomy, Tsinghua University , Beijing 100084, People's Republic of China; Zhejiang Lab , Hangzhou, Zhejiang 311121, People's Republic of China
- Diego F. Torres
- ORCiD
- Institute of Space Sciences (ICE, CSIC) , Campus UAB, Carrer de Can Magrans, 08193 Barcelona, Spain; Institut d’Estudis Espacials de Catalunya (IEEC) , 08860 Castelldefels (Barcelona), Spain; Institució Catalana de Recerca i Estudis Avançats (ICREA) , E-08010 Barcelona, Spain
- Yutong Chen
- National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People's Republic of China ; [email protected]; University of Chinese Academy of Sciences , Beijing 100049, People's Republic of China
- Jiarui Niu
- ORCiD
- National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People's Republic of China ; [email protected]; University of Chinese Academy of Sciences , Beijing 100049, People's Republic of China
- Wei-Wei Zhu
- ORCiD
- National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People's Republic of China ; [email protected]; Institute for Frontiers in Astronomy and Astrophysics, Beijing Normal University , Beijing 102206, People's Republic of China
- Bing Zhang
- ORCiD
- Department of Physics and Astronomy, University of Nevada , Las Vegas, Las Vegas, NV 89154, USA
- En-Wei Liang
- ORCiD
- Guangxi Key Laboratory for Relativistic Astrophysics, School of Physical Science and Technology, Guangxi University , Nanning 530004, People's Republic of China
- Li Zhang
- ORCiD
- Department of Astronomy, Key Laboratory of Astroparticle Physics of Yunnan Province, Yunnan University , Kunming 650091, People's Republic of China
- Mingyu Ge
- ORCiD
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People's Republic of China
- Zigao Dai
- ORCiD
- CAS Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China , Hefei 230026, People's Republic of China ; [email protected]; School of Astronomy and Space Science, University of Science and Technology of China , Hefei 230026, People's Republic of China
- Lin Lin
- ORCiD
- Institute for Frontiers in Astronomy and Astrophysics, Beijing Normal University , Beijing 102206, People's Republic of China
- Jinlin Han
- ORCiD
- National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People's Republic of China ; [email protected]
- Yi Feng
- Zhejiang Lab , Hangzhou, Zhejiang 311121, People's Republic of China
- Chenhui Niu
- ORCiD
- Institute of Astrophysics, Central China Normal University , Wuhan 430079, People's Republic of China
- Yongkun Zhang
- ORCiD
- National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People's Republic of China ; [email protected]; University of Chinese Academy of Sciences , Beijing 100049, People's Republic of China
- Dejiang Zhou
- ORCiD
- National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People's Republic of China ; [email protected]; University of Chinese Academy of Sciences , Beijing 100049, People's Republic of China
- Heng Xu
- ORCiD
- National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People's Republic of China ; [email protected]; Department of Astronomy, Peking University , Beijing 100871, People's Republic of China
- Chunfeng Zhang
- ORCiD
- National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People's Republic of China ; [email protected]; Department of Astronomy, Peking University , Beijing 100871, People's Republic of China
- Jinchen Jiang
- ORCiD
- National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People's Republic of China ; [email protected]; Department of Astronomy, Peking University , Beijing 100871, People's Republic of China
- Chenchen Miao
- ORCiD
- Zhejiang Lab , Hangzhou, Zhejiang 311121, People's Republic of China
- Mao Yuan
- ORCiD
- National Space Science Center , Chinese Academy of Sciences, Beijing 101400, People's Republic of China
- Weiyang Wang
- ORCiD
- University of Chinese Academy of Sciences , Beijing 100049, People's Republic of China; Kavli Institute for Astronomy and Astrophysics, Peking University , Beijing 100871, People's Republic of China
- Dengke Zhou
- ORCiD
- Zhejiang Lab , Hangzhou, Zhejiang 311121, People's Republic of China
- Jianhua Fang
- ORCiD
- Zhejiang Lab , Hangzhou, Zhejiang 311121, People's Republic of China
- Youling Yue
- ORCiD
- National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People's Republic of China ; [email protected]
- Yunsheng Wu
- Tencent Youtu Lab , Shanghai 201103, People's Republic of China
- Yabiao Wang
- ORCiD
- Tencent Youtu Lab , Shanghai 201103, People's Republic of China
- Chengjie Wang
- Tencent Youtu Lab , Shanghai 201103, People's Republic of China
- Zhenye Gan
- ORCiD
- Tencent Youtu Lab , Shanghai 201103, People's Republic of China
- Yuxi Li
- Tencent Youtu Lab , Shanghai 201103, People's Republic of China
- Zhongyi Sun
- Tencent Youtu Lab , Shanghai 201103, People's Republic of China
- Mingmin Chi
- Fudan University , Shanghai 200438, People's Republic of China
- Junshuo Zhang
- ORCiD
- National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People's Republic of China ; [email protected]; University of Chinese Academy of Sciences , Beijing 100049, People's Republic of China
- Jinhuang Cao
- ORCiD
- National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People's Republic of China ; [email protected]; University of Chinese Academy of Sciences , Beijing 100049, People's Republic of China
- Wanjin Lu
- ORCiD
- National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People's Republic of China ; [email protected]; University of Chinese Academy of Sciences , Beijing 100049, People's Republic of China
- Yidan Wang
- ORCiD
- National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People's Republic of China ; [email protected]; University of Chinese Academy of Sciences , Beijing 100049, People's Republic of China
- DOI
- https://doi.org/10.3847/1538-4365/ad7c3f
- Journal volume & issue
-
Vol. 275,
no. 2
p. 39
Abstract
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 has 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 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 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.
Keywords
