The Astrophysical Journal (Jan 2023)
High-altitude Magnetospheric Emissions from Two Pulsars
- Mao Yuan,
- Weiwei Zhu,
- Michael Kramer,
- Bo Peng,
- Jiguang Lu,
- Renxin Xu,
- Lijing Shao,
- Hong-Guang Wang,
- Lingqi Meng,
- Jiarui Niu,
- Rushuang Zhao,
- Chenchen Miao,
- Xueli Miao,
- Mengyao Xue,
- Yi Feng,
- Pei Wang,
- Di Li,
- Chengming Zhang,
- David J. Champion,
- Emmanuel Fonseca,
- Huanchen Hu,
- Jumei Yao,
- Paulo C. C. Freire,
- Yanjun Guo
Affiliations
- Mao Yuan
- ORCiD
- National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People's Republic of China ; [email protected], [email protected], [email protected]; College of Astronomy and Space Sciences, University of Chinese Academy of Sciences , Beijing 100049, People's Republic of China
- Weiwei Zhu
- ORCiD
- National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People's Republic of China ; [email protected], [email protected], [email protected]
- Michael Kramer
- ORCiD
- Max-Planck-Institut für Radioastronomie , Auf dem Hügel 69, D-53121 Bonn, Germany ; [email protected]
- Bo Peng
- ORCiD
- National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People's Republic of China ; [email protected], [email protected], [email protected]
- Jiguang Lu
- National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People's Republic of China ; [email protected], [email protected], [email protected]
- Renxin Xu
- ORCiD
- Department of Astronomy, Peking University , Beijing 100871, People's Republic of China; Kavli Institute for Astronomy and Astrophysics, Peking University , Beijing 100871, People's Republic of China
- Lijing Shao
- ORCiD
- Kavli Institute for Astronomy and Astrophysics, Peking University , Beijing 100871, People's Republic of China
- Hong-Guang Wang
- ORCiD
- Department of Astronomy, Guangzhou University , Guangzhou 510006, People's Republic of China
- Lingqi Meng
- National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People's Republic of China ; [email protected], [email protected], [email protected]; College of Astronomy and Space Sciences, University of Chinese Academy of Sciences , Beijing 100049, People's Republic of China
- Jiarui Niu
- National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People's Republic of China ; [email protected], [email protected], [email protected]; College of Astronomy and Space Sciences, University of Chinese Academy of Sciences , Beijing 100049, People's Republic of China
- Rushuang Zhao
- ORCiD
- National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People's Republic of China ; [email protected], [email protected], [email protected]
- Chenchen Miao
- ORCiD
- National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People's Republic of China ; [email protected], [email protected], [email protected]; College of Astronomy and Space Sciences, University of Chinese Academy of Sciences , Beijing 100049, People's Republic of China
- Xueli Miao
- National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People's Republic of China ; [email protected], [email protected], [email protected]
- Mengyao Xue
- National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People's Republic of China ; [email protected], [email protected], [email protected]
- Yi Feng
- ORCiD
- Research Institute of Artificial Intelligence , Zhejiang Lab, Hangzhou, Zhejiang 311121, People's Republic of China
- Pei Wang
- ORCiD
- National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People's Republic of China ; [email protected], [email protected], [email protected]
- Di Li
- ORCiD
- National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People's Republic of China ; [email protected], [email protected], [email protected]
- Chengming Zhang
- National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People's Republic of China ; [email protected], [email protected], [email protected]
- David J. Champion
- ORCiD
- Max-Planck-Institut für Radioastronomie , Auf dem Hügel 69, D-53121 Bonn, Germany ; [email protected]
- Emmanuel Fonseca
- ORCiD
- Department of Physics and Astronomy, West Virginia University , P.O. Box 6315, Morgantown, WV 26506, USA; Center for Gravitational Waves and Cosmology, West Virginia University , Chestnut Ridge Research Building, Morgantown, WV 26505, USA
- Huanchen Hu
- Max-Planck-Institut für Radioastronomie , Auf dem Hügel 69, D-53121 Bonn, Germany ; [email protected]
- Jumei Yao
- ORCiD
- Xinjiang Astronomical Observatory , Chinese Academy of Sciences, 150, Science 1-Street, Urumqi, Xinjiang 830011, People's Republic of China
- Paulo C. C. Freire
- ORCiD
- Max-Planck-Institut für Radioastronomie , Auf dem Hügel 69, D-53121 Bonn, Germany ; [email protected]
- Yanjun Guo
- ORCiD
- Max-Planck-Institut für Radioastronomie , Auf dem Hügel 69, D-53121 Bonn, Germany ; [email protected]
- DOI
- https://doi.org/10.3847/1538-4357/accb9a
- Journal volume & issue
-
Vol. 949,
no. 2
p. 115
Abstract
We discover three new weak pulse components in two known pulsars, one in PSR J0304+1932 and two in PSR J1518+4904. These components are emitted about halfway between the main emission beam and the interpulse beam (beam from the opposite pole). They are separated from their main pulse peak by 99° ± 3° for J0304+1932 and 123.°6 ± 0.°7 (leading) and 93° ± 0.°4 (trailing) for J1518+4904. Their peak-intensity ratios to main pulses are ∼ 0.06% for J0304+1932 and ∼0.17% and ∼0.83% for J1518+4904. We also analyzed the flux fluctuations and profile variations of the emissions for the two pulsars. The results show correlations between the weak pulses and their main pulses, indicating that these emissions come from the same pole. We estimated the emission altitude of these weak pulses and derived a height of about half of the pulsar’s light-cylinder radius. These pulse components are a unique sample of high-altitude emissions from pulsars, and challenge the current pulsar emission models.
Keywords
