主要内容:
就是如果真有两喷流，就应该在孤儿余辉里看到两个峰。
这个步子是不是垮的太大了点儿啊？孤儿余辉都还一个都没有看到呢。你要验证也可以直接用余辉啊，如果真有两个喷流，那一般喷流里也应该有一个从别处来的峰或者鼓包什么的。
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文章信息:
- · arXiv e-print (arXiv:1004.2998)
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| Title: |
| Testing two-jet models of GRBs with the orphan afterglow |
| Authors: |
| Inayoshi, Kohei; Tsutsui, Ryo |
| Publication: |
| eprint arXiv:1004.2998 |
| Publication Date: |
| 04/2010 |
| Origin: |
| ARXIV |
| Keywords: |
| Astrophysics - High Energy Astrophysical Phenomena |
| Comment: |
| 4 pages, 2 figures |
| Bibliographic Code: |
| 2010arXiv1004.2998I |
Abstract
Two-jet models are introduced to explain the complex time profiles and diversities of early afterglows in the \swift era. Testing these afterglow models is important because it relates not only to the afterglow emission mechanism, but also to the activity of the central engines of gamma-ray bursts (GRBs). In this paper, we suggest a new method of testing two-jet models by using orphan afterglows of GRBs. Orphan afterglows, which are afterglows without prompt emissions due to the viewing from off-axis angles, contain the certain information about jet components. If afterglows are really composed of two jets, we can observe two peaks in the orphan afterglows in the optical band. Typically, the first peak appears on $10^4-10^5$s and the second peak on $10^5-10^6$s. Moreover, we can estimate the larger number of the orphan afterglows than expected from the conventional afterglow models in the X-ray band. Therefore, first we observe the orphan afterglow in the X-ray band, and if we follow up the afterglow in the optical band, we can observe two peaks.
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