Institutional Repository of Radio Astronomy Research Laboratory
| Properties of pulsar subpulse drifting in different profile components | |
Tu, Z. Y.1,2 ; Yuen, R.1,3,4; Han, X. H.1
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| 2022-06-01 | |
| Source Publication | JOURNAL OF ASTROPHYSICS AND ASTRONOMY
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| ISSN | 0250-6335 |
| Volume | 43Issue:1Pages:28 |
| Contribution Rank | 1 |
| Abstract | We investigate the emission properties of the pulsars that exhibit different drifting subpulses in different pulse profile components based on the model for obliquely rotating pulsar magnetospheres of multiple emission states. Emission from subpulses is assumed coming from m discrete areas located on carousels around the magnetic axis and flowing at rates determined by the E x B drift. An emission state is defined by this drift, and a change in the emission state corresponds to a change in the drift velocity. The model is applied to eight pulsars, all displaying drifting subpulses of particular properties along two different drift-bands at different parts of the pulse profile at 21 cm observing wavelength. Simulation is performed to identify the emission states for the different drifting subpulses and the associated values of m in the emission region. The results show that drifting subpulses in different profile components correspond to particular emission states and m, and that different emission states and m can coexist in an emission region. We determine the circulation time for plasma around the magnetosphere and show that it is related to the obliquity angle. By comparing with three other pulsars that display drifting subpulses of a single drift-band, we find that drifting subpulses demonstrate similar properties when considering the different drift-bands separately. We speculate, based on our results, that the coexistence of different drifting subpulses within a pulse profile may require additional mechanism, and the phenomenon is more common in pulsars with small obliquity angle. |
| Keyword | Radiation mechanisms: nonthermal pulsar: general |
| DOI | 10.1007/s12036-022-09808-9 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | RADIO-EMISSION ALTITUDE ; POLAR CAPS ; POTENTIAL DROPS ; SUB-PULSES ; ACCELERATION ; MODULATION ; MODEL ; POLARIZATION ; GEOMETRY |
| Funding Project | Xinjiang Uygur Autonomous Region of China for Flexibly Fetching in Upscale Talents ; Natural Science Foundation of China[U1838109] ; Natural Science Foundation of China[11873080] ; Natural Science Foundation of China[12041301] ; CAS Pioneer Hundred Talents Program ; Xiaofeng Yang's Xinjiang Tianchi Bairen project |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:000798174300001 |
| Publisher | INDIAN ACAD SCIENCES |
| Funding Organization | Xinjiang Uygur Autonomous Region of China for Flexibly Fetching in Upscale Talents ; Natural Science Foundation of China ; CAS Pioneer Hundred Talents Program ; Xiaofeng Yang's Xinjiang Tianchi Bairen project |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/4765 |
| Collection | 射电天文研究室_脉冲星研究团组 射电天文研究室 |
| Corresponding Author | Yuen, R. |
| Affiliation | 1.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China 2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 3.Chinese Acad Sciencess, Key Lab Radio Astron, Nanjing 210008, Peoples R China 4.Univ Sydney, Sch Phys, SIfA, Sydney, NSW 2006, Australia |
| First Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Corresponding Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | Tu, Z. Y.,Yuen, R.,Han, X. H.. Properties of pulsar subpulse drifting in different profile components[J]. JOURNAL OF ASTROPHYSICS AND ASTRONOMY,2022,43(1):28. |
| APA | Tu, Z. Y.,Yuen, R.,&Han, X. H..(2022).Properties of pulsar subpulse drifting in different profile components.JOURNAL OF ASTROPHYSICS AND ASTRONOMY,43(1),28. |
| MLA | Tu, Z. Y.,et al."Properties of pulsar subpulse drifting in different profile components".JOURNAL OF ASTROPHYSICS AND ASTRONOMY 43.1(2022):28. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Tu-2022-Properties o（799KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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