Modeling the Radial Distribution of Pulsars in the Galaxy
文献类型：期刊论文
| 作者 | Xie, J. T.5,6; Wang, J. B.4 ; Wang, N.2,3,5; Manchester, R.1; Hobbs, G.1
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| 刊名 | ASTROPHYSICAL JOURNAL LETTERS
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| 出版日期 | 2024-03-01 |
| 卷号 | 963期号:2页码:L39 |
| ISSN号 | 2041-8205 |
| DOI | 10.3847/2041-8213/ad2850 |
| 产权排序 | 2 |
| 英文摘要 | The Parkes 20 cm multibeam pulsar surveys have discovered nearly half of the known pulsars and revealed many distant pulsars with high dispersion measures. Using a sample of 1301 pulsars from these surveys, we have explored the spatial distribution and birth rate of normal pulsars. The pulsar distances used to calculate the pulsar surface density are estimated from the YMW16 electron-density model. When estimating the impact of the Galactic background radiation on our survey, we projected pulsars in the galaxy onto the Galactic plane, assuming that the flux density distribution of pulsars is uniform in all directions, and utilized the most up-to-date background temperature map. We also used an up-to-date version of the ATNF Pulsar Catalogue to model the distribution of pulsar flux densities at 1400 MHz. We derive an improved radial distribution for the pulsar surface density projected onto the Galactic plane, which has a maximum value at similar to 4 kpc from the Galactic center. We also derive the local surface density and birth rate of pulsars, obtaining 47 +/- 5 kpc-2 and similar to 4.7 +/- 0.5 kpc-2 Myr-1, respectively. For the total number of potentially detectable pulsars in the galaxy, we obtain (1.1 +/- 0.2) x 104 and (1.1 +/- 0.2)x105 before and after applying the Tauris & Manchester beaming correction model. The radial distribution function is used to estimate the proportion of pulsars in each spiral arm and the Galactic center. |
| WOS关键词 | HIGH-FREQUENCY SURVEY ; SPIRAL STRUCTURE ; GALACTIC PLANE ; DISCOVERY ; EVOLUTION ; YOUNG |
| 资助项目 | Major Science and Technology Program of Xinjiang Uygur Autonomous Region[2022A03013-4] ; Zhejiang Provincial Natural Science Foundation of China[LY23A030001] ; National SKA Program of China[2020SKA0120100] ; National SKA Program of China[2022D01D85] ; National Natural Science Foundation of China[12041304] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001180426500001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | Major Science and Technology Program of Xinjiang Uygur Autonomous Region ; Zhejiang Provincial Natural Science Foundation of China ; National SKA Program of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/5924]  |
| 专题 | 研究单元未命名 |
| 通讯作者 | Wang, J. B.; Wang, N. |
| 作者单位 | 1.Australia Telescope Natl Facil, CSIRO Space & Astron, POB76, Epping, NSW 1710, Australia 2.Xinjiang Key Lab Radio Astrophys, 150 Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China 3.Chinese Acad Sci, Lab Radio Astron, 150 Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China 4.Lishui Univ, Inst Optoelect Technol, Lishui 323000, Zhejiang, Peoples R China 5.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China 6.Zhejiang Lab, Hangzhou 311121, Zhejiang, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xie, J. T.,Wang, J. B.,Wang, N.,et al. Modeling the Radial Distribution of Pulsars in the Galaxy[J]. ASTROPHYSICAL JOURNAL LETTERS,2024,963(2):L39. |
| APA | Xie, J. T.,Wang, J. B.,Wang, N.,Manchester, R.,&Hobbs, G..(2024).Modeling the Radial Distribution of Pulsars in the Galaxy.ASTROPHYSICAL JOURNAL LETTERS,963(2),L39. |
| MLA | Xie, J. T.,et al."Modeling the Radial Distribution of Pulsars in the Galaxy".ASTROPHYSICAL JOURNAL LETTERS 963.2(2024):L39. |
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