| 伽玛射线暴:各向同性火球还是柱形喷流? |
| |
| 引用本文： | 黄永锋,谭长宜,戴子高,陆琰.伽玛射线暴:各向同性火球还是柱形喷流?[J].天文学报,2002,43(2):169-177. |
| |
| 作者姓名： | 黄永锋 谭长宜 戴子高 陆琰 |
| |
| 作者单位： | 南京大学天文系,南京,210093 |
| |
| 基金项目： | 国家自然科学基金(10003001,19825109,19773007)，973项目，国家重点基础研究专项经费(the Special Funds for Major State Basic Research Projects)资助 |
| |
| 摘 要： | 多数伽玛射线暴的光学余辉衰减较平缓且光变曲线未见明显拐折，通常认为它们产生于各向同性火球，GRBs970228,970508,971214,980329及980703等就是典型的例子，但柱型喷流模型其实也能对这类伽玛射线暴的余辉给出极好的拟合，因此它们完全有可能产生于柱形喷流，而并非一定是来自各向同性火球。
|
| 关 键 词： | 伽玛射线暴 各向同性火球 柱形喷流 星系 γ射线 |
| 修稿时间： | 2001年7月2日 |
Are Gamma-ray Bursts due to Isotropic Fireballs or Cylindrical Jets? |
| |
| HUANG Yong-Feng TAN Chang-Yi DAI Zi-Gao LU Tan.Are Gamma-ray Bursts due to Isotropic Fireballs or Cylindrical Jets?[J].Acta Astronomica Sinica,2002,43(2):169-177. |
| |
| Authors: | HUANG Yong-Feng TAN Chang-Yi DAI Zi-Gao LU Tan |
| |
| Abstract: | Afterglows from most gamma-ray bursts, such as GRBs 970228, 970508, 971214, 980329 and 980703, decay slowly and steadily. These bursts are widely believed to be due to isotropic fireballs. However, their afterglows in fact can also be well fit by the cylindrical jet model. It is proposed that these bursts are produced by cylindrical jets, not necessarily isotropic fireballs. |
| |
| Keywords: | Galaxies: jets Gamma-rays: burst Blast waves |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
