Ramij Raja, Oleg M. Smirnov, Tiziana Venturi, Majidul Rahaman, H. -Y. Karen Yang
{"title":"香肠星团漫射射电源的uGMRT亚GHz视图","authors":"Ramij Raja, Oleg M. Smirnov, Tiziana Venturi, Majidul Rahaman, H. -Y. Karen Yang","doi":"arxiv-2409.07504","DOIUrl":null,"url":null,"abstract":"CIZA J2242.8+5301, or the Sausage cluster, is well studied over a range of\nfrequencies. Since its first discovery, a lot of interesting features and\nunique characteristics have been uncovered. In this work, we report some more\nnew morphological features using the uGMRT band-3 and band-4 data. In the north\nrelic, we observe variation in spectral index profiles across the relic width\nfrom the east to west, which may indicate a decrease in downstream cooling rate\nin that direction. We re-confirm the presence of an additional ~ 930 kpc relic\nin the north. We classify the filamentary source in the downstream region to be\na narrow angle tail (NAT) radio galaxy. The bright arc in the east relic shows\nsub-structure in the spectral index profile, which may indicate the presence of\nfiner filaments. We further report the presence of a double-strand structure in\nthe east relic similar to the 'Toothbrush' relic. We categorize the bright 'L'\nshaped structure in the southern relic to be a NAT radio galaxy, as well as\ntrace the actual ~ 1.1 Mpc relic component. We re-confirm the existence of the\nfaint southern extent, measuring the relic length to be ~ 1.8 Mpc. Furthermore,\nwe suggest the southern relic to be a union of individual component relics\nrather than a single giant filamentary relic. Lastly, based on the\nmorphological symmetry between northern and southern relics, we suggest a\nschematic shock structure associated with the merger event in an attempt to\nexplain their formation scenario.","PeriodicalId":501343,"journal":{"name":"arXiv - PHYS - High Energy Astrophysical Phenomena","volume":"75 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"uGMRT sub-GHz view of the Sausage cluster diffuse radio sources\",\"authors\":\"Ramij Raja, Oleg M. Smirnov, Tiziana Venturi, Majidul Rahaman, H. -Y. Karen Yang\",\"doi\":\"arxiv-2409.07504\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"CIZA J2242.8+5301, or the Sausage cluster, is well studied over a range of\\nfrequencies. Since its first discovery, a lot of interesting features and\\nunique characteristics have been uncovered. In this work, we report some more\\nnew morphological features using the uGMRT band-3 and band-4 data. In the north\\nrelic, we observe variation in spectral index profiles across the relic width\\nfrom the east to west, which may indicate a decrease in downstream cooling rate\\nin that direction. We re-confirm the presence of an additional ~ 930 kpc relic\\nin the north. We classify the filamentary source in the downstream region to be\\na narrow angle tail (NAT) radio galaxy. The bright arc in the east relic shows\\nsub-structure in the spectral index profile, which may indicate the presence of\\nfiner filaments. We further report the presence of a double-strand structure in\\nthe east relic similar to the 'Toothbrush' relic. We categorize the bright 'L'\\nshaped structure in the southern relic to be a NAT radio galaxy, as well as\\ntrace the actual ~ 1.1 Mpc relic component. We re-confirm the existence of the\\nfaint southern extent, measuring the relic length to be ~ 1.8 Mpc. Furthermore,\\nwe suggest the southern relic to be a union of individual component relics\\nrather than a single giant filamentary relic. Lastly, based on the\\nmorphological symmetry between northern and southern relics, we suggest a\\nschematic shock structure associated with the merger event in an attempt to\\nexplain their formation scenario.\",\"PeriodicalId\":501343,\"journal\":{\"name\":\"arXiv - PHYS - High Energy Astrophysical Phenomena\",\"volume\":\"75 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-09-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"arXiv - PHYS - High Energy Astrophysical Phenomena\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/arxiv-2409.07504\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"arXiv - PHYS - High Energy Astrophysical Phenomena","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/arxiv-2409.07504","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
uGMRT sub-GHz view of the Sausage cluster diffuse radio sources
CIZA J2242.8+5301, or the Sausage cluster, is well studied over a range of
frequencies. Since its first discovery, a lot of interesting features and
unique characteristics have been uncovered. In this work, we report some more
new morphological features using the uGMRT band-3 and band-4 data. In the north
relic, we observe variation in spectral index profiles across the relic width
from the east to west, which may indicate a decrease in downstream cooling rate
in that direction. We re-confirm the presence of an additional ~ 930 kpc relic
in the north. We classify the filamentary source in the downstream region to be
a narrow angle tail (NAT) radio galaxy. The bright arc in the east relic shows
sub-structure in the spectral index profile, which may indicate the presence of
finer filaments. We further report the presence of a double-strand structure in
the east relic similar to the 'Toothbrush' relic. We categorize the bright 'L'
shaped structure in the southern relic to be a NAT radio galaxy, as well as
trace the actual ~ 1.1 Mpc relic component. We re-confirm the existence of the
faint southern extent, measuring the relic length to be ~ 1.8 Mpc. Furthermore,
we suggest the southern relic to be a union of individual component relics
rather than a single giant filamentary relic. Lastly, based on the
morphological symmetry between northern and southern relics, we suggest a
schematic shock structure associated with the merger event in an attempt to
explain their formation scenario.