主要内容:
得到了两个时间的谱，通过谱可以得到速度。
精彩摘抄:
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| 两个时间的谱，黑色6.48天，灰色27.62天 |
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| 6.48天的谱的拟合 |
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| 27.6天的谱的拟合 |
文章信息:
- · arXiv e-print (arXiv:1004.2633)
- · References in the Article
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| Title: |
| Study of Envelope Velocity Evolution of Type Ib-c Core-Collapse Supernovae from Observations of XRF 080109 / SN 2008D and GRB 060218 / SN 2006aj with BTA |
| Authors: |
| Moskvitin, A. S.; Sonbas, E.; Sokolov, V. V.; Fatkhullin, T. A.; Castro-Tirado, A. J. |
| Publication: |
| eprint arXiv:1004.2633 |
| Publication Date: |
| 04/2010 |
| Origin: |
| ARXIV |
| Keywords: |
| Astrophysics - High Energy Astrophysical Phenomena |
| Comment: |
| 12 pages, 6 figures, accepted for publication in Astrophysical Bulletin. |
| Bibliographic Code: |
| 2010arXiv1004.2633M |
Abstract
Results of modeling the spectra of two supernovae SN 2008D and SN 2006aj related to the X-ray flash XRF 080109 and gamma-ray burst GRB / XRF 060218, respectively, are studied. The spectra were obtained with the 6-meter BTA telescope of the Special Astrophysical Observatory of the Russian Academy of Sciences in 6.48 and 27.61 days after the explosion of SN 2008D, and in 2.55 and 3.55 days after the explosion of SN 2006aj. The spectra were interpreted in the Sobolev approximation with the SYNOW code. An assumption about the presence of envelopes around the progenitor stars is confirmed by an agreement between the velocities of lines interpreted as hydrogen and helium, and the empiric power-law velocity drop with time for the envelopes of classic core-collapse supernovae. Detection of a P Cyg profile of the H-beta line in the spectra of optical afterglows of GRBs can be a determinative argument in favor of this hypothesis.
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