Radio Observations at 232 MHz and Multifrequency Spectral Studies of the SNR HB21
文献类型：期刊论文
| 作者 | TLLandecker3; Zhang Xizhen2; Wu Xinji1; L A Higgs3; Qian Shanjie2 |
| 刊名 | Chinese Journal of Astronomy and Astrophysics
 |
| 出版日期 | 2001 |
| 卷号 | 1期号:5页码:443 |
| ISSN号 | 1009-9271 |
| 英文摘要 | Radio observational results at 232 MHz and multifrequency studies of the supernova remnant (SNR) HB21 are presented. Its integrated flux density at 232 MHz is about 390 +/- 30 Jy. Both the integrated spectral index and the spatial variations of spectral index of the remnant were calculated by combining the new map at 232 MHz with previously published maps made at 408, 1420, 2695, and 4750 MHz. The SNR has an integrated spectral index of about alpha = -0.43 (S-v proportional to v(alpha)) between 232 and 4750 MHz. In general the spectral index varies from -0.5 in southeast and west regions of the remnant to -0.3 in the central region and near the northwest edge. The new data of 232 MHz reveal that there is interaction between the remnant and the surrounding gas along the east edge of the remnant which causes the spectrum flattening at low frequency, while the very good agreement between the structure of X-ray emission and the central flat spectrum area suggests that the existence of thermal emission is the reason of spectrum flattening in the area. |
| 语种 | 英语 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/43188]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.北京大学 2.中国科学院国家天文台 3.Dominion Radio Astrophysical Observatory |
| 推荐引用方式 GB/T 7714 | TLLandecker,Zhang Xizhen,Wu Xinji,et al. Radio Observations at 232 MHz and Multifrequency Spectral Studies of the SNR HB21[J]. Chinese Journal of Astronomy and Astrophysics,2001,1(5):443. |
| APA | TLLandecker,Zhang Xizhen,Wu Xinji,L A Higgs,&Qian Shanjie.(2001).Radio Observations at 232 MHz and Multifrequency Spectral Studies of the SNR HB21.Chinese Journal of Astronomy and Astrophysics,1(5),443. |
| MLA | TLLandecker,et al."Radio Observations at 232 MHz and Multifrequency Spectral Studies of the SNR HB21".Chinese Journal of Astronomy and Astrophysics 1.5(2001):443. |
入库方式： OAI收割
来源：国家天文台
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