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Periodic and Phase-locked Modulation in PSR B1929+10 Observed with FAST
Kou,F. F.1,2; Yan,W. M.2,3; Peng,B.1; Lu,J. G.1; Liu,K.1,4; Zhang,C. M.1; Strom,R. G.5,6; Wang,L.1,7,8; Yuan,J. P.2,9; Yuen,Rai2,3; Yu,Y. Z.10; Yao,J. M.1,2; Liu,B.1; Yan,J.1; Jiang,P.1; Jin,C. J.1; Li,D.1,11; Qian,L.1; Yue,Y. L.1; Zhu,Y.1
2021-03-01
Source PublicationThe Astrophysical Journal
ISSN0004-637X
Volume909Issue:2
AbstractAbstract We present a detailed single-pulse analysis for PSR B1929+10 based on observations with the Five-hundred-meter Aperture Spherical radio Telescope (FAST). The main pulse (MP) and interpulse (IP) are found to be modulated with a periodicity of ~12 times the pulsar’s rotational period (P). The ~12P modulation is confirmed as a periodic amplitude modulation instead of systematic drifting. The periodic amplitude modulation in the IP is found to be anti-correlated with that in the weak preceding component of the MP (MP_i), but correlated with that in the first two components of the MP (MP_ii), which implies that the modulation patterns in the IP and the MP are phase-locked. What is more interesting is that the modulation in MP_ii is delayed from that in the IP by about 1P. Furthermore, high-sensitivity observations by FAST reveal that weak emission exists between the MP and the IP. In addition, we confirm that the separation between the IP and the MP is independent of radio frequency. The above results are a conundrum for pulsar theories and cannot be satisfactorily explained by the current pulsar models. Therefore, our results observed with FAST provide an opportunity to probe the structure of pulsar emission and the neutron star’s magnetosphere.
KeywordPulsars Radio pulsars Neutron stars Magnetospheric radio emissions Observational astronomy
DOI10.3847/1538-4357/abd545
Language英语
WOS IDIOP:0004-637X-909-2-abd545
PublisherThe American Astronomical Society
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/59823
Collection中国科学院国家天文台
Corresponding AuthorKou,F. F.
Affiliation1.CAS Key Laboratory of FAST, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People’s Republic of China koufeifei@nao.cas.cn, pb@nao.cas.cn
2.Xinjiang Astronomical Observatories, Chinese Academy of Sciences, Urumqi, 830011, People’s Republic of China
3.Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, Nanjing 210023, People’s Republic of China
4.Max-Plank-Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn, Germany
5.ASTRON, Postbus 2, 7990 AA Dwingeloo, The Netherlands
6.Astronomical Institute, University of Amsterdam, The Netherlands
7.Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, The University of Manchester, Manchester M13 9PL, UK
8.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
9.Department of Astronomy, China West Normal University, Nanchong 637009, People’s Republic of China
10.Qiannan Normal University for Nationalities, Duyun 558000, People’s Republic of China
11.NAOC-UKZN Computational Astrophysics Centre, University of KwaZulu-Natal, Durban 4000, South Africa
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Kou,F. F.,Yan,W. M.,Peng,B.,et al. Periodic and Phase-locked Modulation in PSR B1929+10 Observed with FAST[J]. The Astrophysical Journal,2021,909(2).
APA Kou,F. F..,Yan,W. M..,Peng,B..,Lu,J. G..,Liu,K..,...&Zhu,Y..(2021).Periodic and Phase-locked Modulation in PSR B1929+10 Observed with FAST.The Astrophysical Journal,909(2).
MLA Kou,F. F.,et al."Periodic and Phase-locked Modulation in PSR B1929+10 Observed with FAST".The Astrophysical Journal 909.2(2021).
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