Diffuse gamma-ray emission around the Rosette Nebula

被引：3

作者：

Liu, Jia-hao ^{[1
,2
,3
]}

Liu, Bing ^{[1
,2
,3
]}

Yang, Rui-zhi ^{[1
,2
,3
]}

机构：

[1] Univ Sci & Technol China, Deep Space Explorat Lab Sch Phys Sci, Hefei 230026, Peoples R China

[2] Univ Sci & Technol China, Sch Phys Sci, Dept Astron, CAS Key Lab Res Galaxies & Cosmol, Hefei 230026, Anhui, Peoples R China

[3] Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Anhui, Peoples R China

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2023年 / 526卷 / 01期

关键词：

open clusters and associations: individual: NGC 2244; cosmic rays; HII regions; ISM: individual objects: Rosette Nebula; gamma-rays: ISM; COSMIC-RAYS; MOLECULAR CLOUDS; MASSIVE CLUSTER; NGC; 2244; FERMI; PHOTOMETRY; DISTANCE; CHANDRA; AGE;

D O I：

10.1093/mnras/stad2723

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Rosette Nebula is a young stellar cluster and molecular cloud complex, located at the edge of the southern shell of a middle-aged supernova remnant Monoceros Loop (G205.5+0.5). We revisited the GeV gamma-ray emission towards the Rosette Nebula using more than 13yr of Fermi-LAT data. We tested several spatial models and found that compared to the result using the CO gas template only, the inclusion of the Hii gas template can significantly improve the likelihood fit. We performed spectral analysis using the new spatial template. With both the gamma-ray observation and CO+Hii gas data, we derived the cosmic ray spectrum of different components in the vicinity of the Rosette Nebula. We found the gamma-ray emissions from Rosette Nebula are substantially harder than previously reported, which may imply that Rosette Nebula is another example of a gamma-ray emitting young massive star cluster.

引用

页码：175 / 180

页数：6

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