中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 新疆天文台
  3. 研究单元未命名
  4. 射电天文研究室
  5. 脉冲星研究团组
Observations of Nine Millisecond Pulsars at 8600 MHz Using the TMRT

文献类型：期刊论文

作者Wang, Xiao-Wei2,3; Yan, Zhen2,3,4; Shen, Zhi-Qiang2,3,4,5; Tong, Hao1; Zhou, Xia4,6,7; Zhao, Rong-Bing2,3,4; Wu, Ya-Jun2,3,4; Huang, Zhi-Peng2,3,5; Wang, Rui2,3; Liu, Jie2
刊名ASTROPHYSICAL JOURNAL
出版日期2024
卷号961期号:1页码:48
ISSN号0004-637X
DOI10.3847/1538-4357/ad0724
产权排序6
英文摘要We report detection results of nine millisecond pulsars (MSPs) at 8600 MHz using simultaneous 2250 and 8600 MHz observations conducted with the Shanghai Tian Ma Radio Telescope. Mainly benefiting from updated ephemerids with 2250 MHz observations, integrated profiles of all nine MSPs at 8600 MHz are successfully obtained by coherently adding multi-epoch (3-83 epochs) observation data spanning from 19-1210 days, which significantly increases the number of MSPs with published profiles (from 4 to 11) above 8000 MHz, as seven of our target MPSs had no related results previously. Combining our new flux density and pulse width measurements with previous low-frequency results, we study their integrated profile evolution and spectral behaviors in a wider frequency range. We find their component separations and pulse widths remain almost constant, which is consistent with previous findings. While dramatic evolution of integrated profiles exists at low frequencies, we observe a potential end of the related evolution around 5 GHz in eight MSPs. The spectra of four MSPs are found to deviate from a single power law, and we fit them with a broken power law. The change in the profile of PSR J1713+0747, which started around MJD 59320-59321, seems to be more prominent as the observation frequency increases. Compared with the effects of the interstellar medium, we prefer to explain this event as some changes in the magnetosphere. We also find its integrated profile possibly had not recovered to the pre-event state until MJD 59842-59857.
WOS关键词FLUX-DENSITY MEASUREMENTS ; SINGLE-PULSE ; BACK-END ; BINARY ; EMISSION ; SPECTRA ; DISCOVERY ; PROFILES ; CENSUS ; POLARIMETRY
资助项目STCSM divided by Natural Science Foundation of Shanghai Municipalityhttps://doi.org/10.13039/100007219[2022YFA1603104] ; National Key R&D Program of China[U2031119] ; National Key R&D Program of China[12041301] ; National Natural Science Foundation of China[20ZR1467600] ; Natural Science Foundation of Shanghai
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001141968400001
出版者IOP Publishing Ltd
资助机构STCSM divided by Natural Science Foundation of Shanghai Municipalityhttps://doi.org/10.13039/100007219 ; National Key R&D Program of China ; National Natural Science Foundation of China ; Natural Science Foundation of Shanghai
源URL[http://ir.xao.ac.cn/handle/45760611-7/5749]  
专题脉冲星研究团组
通讯作者Yan, Zhen
作者单位1.Guangzhou Univ, Sch Phys & Mat Sci, Dept Astron, Guangzhou 510006, Peoples R China
2.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
3.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Key Lab Radio Astron & Technol, A20 Datun Rd, Beijing 100101, Peoples R China
5.Shanghai Tech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China
6.Chinese Acad Sci, Xinjiang Astron Observ, Xinjiang 830011, Peoples R China
7.Xinjiang Key Lab Radio Astrophys, 150 Sci 1 St, Urumqi 830011, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Xiao-Wei,Yan, Zhen,Shen, Zhi-Qiang,et al. Observations of Nine Millisecond Pulsars at 8600 MHz Using the TMRT[J]. ASTROPHYSICAL JOURNAL,2024,961(1):48.
APA Wang, Xiao-Wei.,Yan, Zhen.,Shen, Zhi-Qiang.,Tong, Hao.,Zhou, Xia.,...&Liu, Jie.(2024).Observations of Nine Millisecond Pulsars at 8600 MHz Using the TMRT.ASTROPHYSICAL JOURNAL,961(1),48.
MLA Wang, Xiao-Wei,et al."Observations of Nine Millisecond Pulsars at 8600 MHz Using the TMRT".ASTROPHYSICAL JOURNAL 961.1(2024):48.

入库方式： OAI收割

来源：新疆天文台

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。