Gamma-Ray Burst In Swift Era: Analysis of Afterglow Light Curves
| dc.contributor.advisor | Reshid, Remudin (PhD) | |
| dc.contributor.author | Endalamaw, Deres | |
| dc.date.accessioned | 2019-09-16T13:04:26Z | |
| dc.date.accessioned | 2023-11-09T11:26:03Z | |
| dc.date.available | 2019-09-16T13:04:26Z | |
| dc.date.available | 2023-11-09T11:26:03Z | |
| dc.date.issued | 2017-10 | |
| dc.description.abstract | We presented the temporal study of all swift/XRT observations of GRB afterglows discovered between January 2005 and July 2005 which they have two or more than two breaks and well known redshift. After constructing and fitting all light curves using MATLAB programming, we have analyzed the temporal and spectral indices for each segments in the canonical X-ray afterglow light curves. The temporal decay index is calculated using log f1−log f2 log t2−log t1 . And the numerical values, resulted from the manipulation, were mostly consistent to the theoretical temporal decay index for each GRBs in each segments. And the spectral index is from closure relation such as = 2 + . In our work, we have used the data of flux decay and time from the Evans et al swift/XRT online repository of United Kingdom solar system data center (UKSSDC). Once we extracted data, we have analyzed the given data to identify the behaviors of the afterglow light curves. The data, we have used, had positive and negative error approximation. Then we have analyzed the data and compared the result and the theoretical value of temporal decay index. Finally the results have been nearly confirmed to 3 . 1 . 5 in early steep decay, the shallow decay with 0.5 . 2 . 1, normal decay with 1.0 < 3 < 1.5 and late steep decay 4. > 2. | en_US |
| dc.identifier.uri | http://10.90.10.223:4000/handle/123456789/19072 | |
| dc.language.iso | en | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | Gamma-Ray Burst In Swift Era | en_US |
| dc.subject | Analysis of Afterglow Light Curves | en_US |
| dc.subject | Methodology | en_US |
| dc.subject | Model | en_US |
| dc.title | Gamma-Ray Burst In Swift Era: Analysis of Afterglow Light Curves | en_US |
| dc.type | Thesis | en_US |