{"title":"利用韩国VLBI网络(KVN) 22-129 GHz观测对Blazar 3C 279喷流的研究","authors":"Sungmin Yoo, Sang-Sung Lee, Sang-Hyun Kim, H. An","doi":"10.5140/jass.2021.38.4.193","DOIUrl":null,"url":null,"abstract":"We present analysis results of Korean VLBI Network (KVN) four-band data for the\n highly variable blazar 3C 279. We measured the 22, 43, 86, and 129 GHz flux densities\n and spectral indices of the source using contemporaneous data taken over 5.6 years. We\n used the discrete correlation function to investigate correlations between the radio\n emission properties and those measured in the optical (2 × 1014 – 1.5 × 1015 Hz), X-ray\n (0.3–10 keV), and gamma-ray (0.1–300 GeV) bands. We found a significant correlation\n between the radio spectral index and gamma-ray flux without a time delay and interpreted\n the correlation using an extended jet scenario for blazar emission.","PeriodicalId":44366,"journal":{"name":"Journal of Astronomy and Space Sciences","volume":null,"pages":null},"PeriodicalIF":0.6000,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Investigation of the Jets of the Blazar 3C 279 with Korean VLBI Network (KVN)\\n 22–129 GHz Observations\",\"authors\":\"Sungmin Yoo, Sang-Sung Lee, Sang-Hyun Kim, H. An\",\"doi\":\"10.5140/jass.2021.38.4.193\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"We present analysis results of Korean VLBI Network (KVN) four-band data for the\\n highly variable blazar 3C 279. We measured the 22, 43, 86, and 129 GHz flux densities\\n and spectral indices of the source using contemporaneous data taken over 5.6 years. We\\n used the discrete correlation function to investigate correlations between the radio\\n emission properties and those measured in the optical (2 × 1014 – 1.5 × 1015 Hz), X-ray\\n (0.3–10 keV), and gamma-ray (0.1–300 GeV) bands. We found a significant correlation\\n between the radio spectral index and gamma-ray flux without a time delay and interpreted\\n the correlation using an extended jet scenario for blazar emission.\",\"PeriodicalId\":44366,\"journal\":{\"name\":\"Journal of Astronomy and Space Sciences\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.6000,\"publicationDate\":\"2021-12-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Astronomy and Space Sciences\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.5140/jass.2021.38.4.193\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"ASTRONOMY & ASTROPHYSICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Astronomy and Space Sciences","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.5140/jass.2021.38.4.193","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ASTRONOMY & ASTROPHYSICS","Score":null,"Total":0}
Investigation of the Jets of the Blazar 3C 279 with Korean VLBI Network (KVN)
22–129 GHz Observations
We present analysis results of Korean VLBI Network (KVN) four-band data for the
highly variable blazar 3C 279. We measured the 22, 43, 86, and 129 GHz flux densities
and spectral indices of the source using contemporaneous data taken over 5.6 years. We
used the discrete correlation function to investigate correlations between the radio
emission properties and those measured in the optical (2 × 1014 – 1.5 × 1015 Hz), X-ray
(0.3–10 keV), and gamma-ray (0.1–300 GeV) bands. We found a significant correlation
between the radio spectral index and gamma-ray flux without a time delay and interpreted
the correlation using an extended jet scenario for blazar emission.
期刊介绍：
JASS aims for the promotion of global awareness and understanding of space science and related applications. Unlike other journals that focus either on space science or on space technologies, it intends to bridge the two communities of space science and technologies, by providing opportunities to exchange ideas and viewpoints in a single journal. Topics suitable for publication in JASS include researches in the following fields: space astronomy, solar physics, magnetospheric and ionospheric physics, cosmic ray, space weather, and planetary sciences; space instrumentation, satellite dynamics, geodesy, spacecraft control, and spacecraft navigation. However, the topics covered by JASS are not restricted to those mentioned above as the journal also encourages submission of research results in all other branches related to space science and technologies. Even though JASS was established on the heritage and achievements of the Korean space science community, it is now open to the worldwide community, while maintaining a high standard as a leading international journal. Hence, it solicits papers from the international community with a vision of global collaboration in the fields of space science and technologies.
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