{"title":"蟹状星云中脉冲星倾角测量的射电源 ( $$\\mathbf{Dec}\\boldsymbol{=+22}^{\\boldsymbol{/circ}}$)","authors":"A. A. Kudryashova, N. N. Bursov, S. A. Trushkin","doi":"10.1134/S1990341324700263","DOIUrl":null,"url":null,"abstract":"<p>The results of the analysis of 205 brightest sources (<span>\\(S>15\\)</span> mJy),\nwhich were found in the sky survey at the declination of the\npulsar in the Crab Nebula, are presented. The survey was conducted\nat a frequency of 4.7 GHz using a three-beam radiometer complex\ninstalled in the focus of the Western Sector of the RATAN-600\nradio telescope in 2018–2019. Based on the measurements taken and\nthe data collected in the CATS astrophysical catalogs database,\nthe radio spectra of the objects were constructed. For a quarter\nof all detected sources, data at frequencies above 4 GHz were\nobtained for the first time, and for the rest they were\nsupplemented. The variability of radiation sources on the scales\nof the year, from days to months, has been studied. The greatest\nchange in the radio flux was found in the blazar B2 1324<span>\\(+\\)</span>22. The\nsearch for daily variability was carried out for 26 of the\nbrightest sources with an average value of <span>\\(S_{4.7}\\sim 250\\)</span> mJy.\nAll sources are identified with objects from\noptical and infrared catalogs. The radio luminosity was calculated\nfor 112 objects with known redshifts.</p>","PeriodicalId":478,"journal":{"name":"Astrophysical Bulletin","volume":"79 1","pages":"36 - 59"},"PeriodicalIF":1.3000,"publicationDate":"2024-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Radio Sources of the Survey on the Declination\\nof the Pulsar in the Crab Nebula (\\\\(\\\\mathbf{Dec}\\\\boldsymbol{=+22}^{\\\\boldsymbol{\\\\circ}}\\\\))\",\"authors\":\"A. A. Kudryashova, N. N. Bursov, S. A. Trushkin\",\"doi\":\"10.1134/S1990341324700263\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The results of the analysis of 205 brightest sources (<span>\\\\(S>15\\\\)</span> mJy),\\nwhich were found in the sky survey at the declination of the\\npulsar in the Crab Nebula, are presented. The survey was conducted\\nat a frequency of 4.7 GHz using a three-beam radiometer complex\\ninstalled in the focus of the Western Sector of the RATAN-600\\nradio telescope in 2018–2019. Based on the measurements taken and\\nthe data collected in the CATS astrophysical catalogs database,\\nthe radio spectra of the objects were constructed. For a quarter\\nof all detected sources, data at frequencies above 4 GHz were\\nobtained for the first time, and for the rest they were\\nsupplemented. The variability of radiation sources on the scales\\nof the year, from days to months, has been studied. The greatest\\nchange in the radio flux was found in the blazar B2 1324<span>\\\\(+\\\\)</span>22. The\\nsearch for daily variability was carried out for 26 of the\\nbrightest sources with an average value of <span>\\\\(S_{4.7}\\\\sim 250\\\\)</span> mJy.\\nAll sources are identified with objects from\\noptical and infrared catalogs. The radio luminosity was calculated\\nfor 112 objects with known redshifts.</p>\",\"PeriodicalId\":478,\"journal\":{\"name\":\"Astrophysical Bulletin\",\"volume\":\"79 1\",\"pages\":\"36 - 59\"},\"PeriodicalIF\":1.3000,\"publicationDate\":\"2024-05-08\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Astrophysical Bulletin\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S1990341324700263\",\"RegionNum\":4,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ASTRONOMY & ASTROPHYSICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Astrophysical Bulletin","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1134/S1990341324700263","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ASTRONOMY & ASTROPHYSICS","Score":null,"Total":0}
Radio Sources of the Survey on the Declination
of the Pulsar in the Crab Nebula (\(\mathbf{Dec}\boldsymbol{=+22}^{\boldsymbol{\circ}}\))
The results of the analysis of 205 brightest sources (\(S>15\) mJy),
which were found in the sky survey at the declination of the
pulsar in the Crab Nebula, are presented. The survey was conducted
at a frequency of 4.7 GHz using a three-beam radiometer complex
installed in the focus of the Western Sector of the RATAN-600
radio telescope in 2018–2019. Based on the measurements taken and
the data collected in the CATS astrophysical catalogs database,
the radio spectra of the objects were constructed. For a quarter
of all detected sources, data at frequencies above 4 GHz were
obtained for the first time, and for the rest they were
supplemented. The variability of radiation sources on the scales
of the year, from days to months, has been studied. The greatest
change in the radio flux was found in the blazar B2 1324\(+\)22. The
search for daily variability was carried out for 26 of the
brightest sources with an average value of \(S_{4.7}\sim 250\) mJy.
All sources are identified with objects from
optical and infrared catalogs. The radio luminosity was calculated
for 112 objects with known redshifts.
期刊介绍:
Astrophysical Bulletin is an international peer reviewed journal that publishes the results of original research in various areas of modern astronomy and astrophysics, including observational and theoretical astrophysics, physics of the Sun, radio astronomy, stellar astronomy, extragalactic astronomy, cosmology, and astronomy methods and instrumentation.