تقرير
Spectral Lag for a Radiating Jet Shell with a High Energy Cut-off Radiation Spectrum
| العنوان: | Spectral Lag for a Radiating Jet Shell with a High Energy Cut-off Radiation Spectrum |
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| المؤلفون: | Du, Shen-Shi, Lin, Da-Bin, Lu, Rui-Jing, Li, Rui-Quan, Gan, Ying-Ying, Ren, Jia, Wang, Xiang-Gao, Liang, En-Wei |
| سنة النشر: | 2019 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - High Energy Astrophysical Phenomena |
| الوصف: | Recent research shows that the spectral lag is closely related to the spectral evolution in GRBs. In this paper, we study the spectral lag for a radiating jet shell with a high-energy cut-off radiation spectrum. For the jet shell with a cut-off power-law spectrum, the spectral lag monotonically increases with the photon energy and levels off at a certain photon energy. It is the same for the jet shell with a Band cut-off spectrum (Bandcut). However, a turn-over from the positive lags to negative lags appears in the high-energy range for the jet shell with Bandcut, which is very similar to that observed in GRB~160625B. The dependence of the spectral lags on the spectral shape/evolution are studied in details. In addition, the spectral lag behavior observed in GRB~160625B is naturally reproduced based on our theoretical outcome. Comment: 15 pages, 20 figures, 1 table, accepted for publication in ApJ |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.3847/1538-4357/ab33fe |
| URL الوصول: | http://arxiv.org/abs/1907.08806 |
| رقم الأكسشن: | edsarx.1907.08806 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.3847/1538-4357/ab33fe |
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