Matches in SemOpenAlex for { <https://semopenalex.org/work/W4292241946> ?p ?o ?g. }
Showing items 1 to 81 of
81
with 100 items per page.
- W4292241946 endingPage "249511" @default.
- W4292241946 startingPage "249511" @default.
- W4292241946 abstract "国际天球参考架（International Celestial Reference Frame, ICRF）由河外射电源的精确位置实现。针对参考射电源在南天区数量偏少、位置精度偏低的问题，我们利用中国四个VLBI台站在内的亚太区域网首次开展了南天区射电源的高灵敏度天体测量实验。在[-90°，-30°]赤纬范围内的87颗目标射电源中，有45颗已有少量天体测量数据，但位置精度较差，其余42颗从未进行天体测量观测。观测实验的时间跨度从2015年到2021年，我们自主完成了VLBI观测纲要编制、相关处理、相关后处理和天体测量参数解算，获得了87颗目标射电源的6471个观测量，其中天马射电望远镜获得的观测量超过2000个，在所有VLBI站中最多，显示了它的高灵敏度天体测量能力。综合解算结果显示，目标射电源中0448-392的位置精度最高，达到了0.14 mas。射电源实测相关流量密度结果显示，在X和S波段都小于0.3 Jy射电源的有58颗，占到了总数的67%。检测到的最弱射电源为0931-446，其X和S波段的相关流量密度分别仅0.04 Jy和0.05Jy，而且所有的观测量都是在天马射电望远镜相关的基线得到的。我们的观测数据为24颗新的ICRF3射电源贡献了1306个观测量，其中13颗射电源是我们首次的，此外还有29颗射电源的1779个观测量将用于下一代国际天球参考架的构建。" @default.
- W4292241946 created "2022-08-19" @default.
- W4292241946 creator A5026200713 @default.
- W4292241946 creator A5060242650 @default.
- W4292241946 creator A5063255304 @default.
- W4292241946 creator A5073968554 @default.
- W4292241946 creator A5079711149 @default.
- W4292241946 date "2023-01-01" @default.
- W4292241946 modified "2023-10-16" @default.
- W4292241946 title "High sensitivity astrometry of 87 radio sources in the southern hemisphere" @default.
- W4292241946 cites W147232447 @default.
- W4292241946 cites W1631106469 @default.
- W4292241946 cites W1966577786 @default.
- W4292241946 cites W2001955524 @default.
- W4292241946 cites W2029959204 @default.
- W4292241946 cites W2095766244 @default.
- W4292241946 cites W2138791392 @default.
- W4292241946 cites W2157947912 @default.
- W4292241946 cites W2182422153 @default.
- W4292241946 cites W2330607774 @default.
- W4292241946 cites W2526180730 @default.
- W4292241946 cites W2789038287 @default.
- W4292241946 cites W3036131012 @default.
- W4292241946 cites W3081200237 @default.
- W4292241946 cites W3098732757 @default.
- W4292241946 cites W3099793742 @default.
- W4292241946 cites W3123810376 @default.
- W4292241946 cites W3207617426 @default.
- W4292241946 cites W4292372260 @default.
- W4292241946 doi "https://doi.org/10.1360/sspma-2022-0273" @default.
- W4292241946 hasPublicationYear "2023" @default.
- W4292241946 type Work @default.
- W4292241946 citedByCount "0" @default.
- W4292241946 crossrefType "journal-article" @default.
- W4292241946 hasAuthorship W4292241946A5026200713 @default.
- W4292241946 hasAuthorship W4292241946A5060242650 @default.
- W4292241946 hasAuthorship W4292241946A5063255304 @default.
- W4292241946 hasAuthorship W4292241946A5073968554 @default.
- W4292241946 hasAuthorship W4292241946A5079711149 @default.
- W4292241946 hasConcept C121332964 @default.
- W4292241946 hasConcept C127413603 @default.
- W4292241946 hasConcept C1276947 @default.
- W4292241946 hasConcept C133725777 @default.
- W4292241946 hasConcept C150846664 @default.
- W4292241946 hasConcept C205649164 @default.
- W4292241946 hasConcept C21200559 @default.
- W4292241946 hasConcept C24326235 @default.
- W4292241946 hasConcept C2777252438 @default.
- W4292241946 hasConcept C2778835443 @default.
- W4292241946 hasConcept C62649853 @default.
- W4292241946 hasConceptScore W4292241946C121332964 @default.
- W4292241946 hasConceptScore W4292241946C127413603 @default.
- W4292241946 hasConceptScore W4292241946C1276947 @default.
- W4292241946 hasConceptScore W4292241946C133725777 @default.
- W4292241946 hasConceptScore W4292241946C150846664 @default.
- W4292241946 hasConceptScore W4292241946C205649164 @default.
- W4292241946 hasConceptScore W4292241946C21200559 @default.
- W4292241946 hasConceptScore W4292241946C24326235 @default.
- W4292241946 hasConceptScore W4292241946C2777252438 @default.
- W4292241946 hasConceptScore W4292241946C2778835443 @default.
- W4292241946 hasConceptScore W4292241946C62649853 @default.
- W4292241946 hasIssue "4" @default.
- W4292241946 hasLocation W42922419461 @default.
- W4292241946 hasOpenAccess W4292241946 @default.
- W4292241946 hasPrimaryLocation W42922419461 @default.
- W4292241946 hasRelatedWork W1660855858 @default.
- W4292241946 hasRelatedWork W1991900011 @default.
- W4292241946 hasRelatedWork W2069047811 @default.
- W4292241946 hasRelatedWork W2084948601 @default.
- W4292241946 hasRelatedWork W2138734717 @default.
- W4292241946 hasRelatedWork W2153407703 @default.
- W4292241946 hasRelatedWork W3036902673 @default.
- W4292241946 hasRelatedWork W3047437796 @default.
- W4292241946 hasRelatedWork W3171081417 @default.
- W4292241946 hasRelatedWork W4302039616 @default.
- W4292241946 hasVolume "53" @default.
- W4292241946 isParatext "false" @default.
- W4292241946 isRetracted "false" @default.
- W4292241946 workType "article" @default.