التفاصيل البيبلوغرافية
| العنوان: |
Global Properties of X-Ray Flashes and X-Ray-Rich GRBs Observed by Swift |
| المؤلفون: |
Sakamoto, T, Yamazaki, R, Cummings, J, Krimm, H, Parsons, A, Hullinger, D, Barbier, L, Fenimore, E, Markwardt, C, Tueller, J, Sato, G, Barthelmy, S, Gehrels, N, Palmer, D |
| بيانات النشر: |
United States: NASA Center for Aerospace Information (CASI), 2007. |
| سنة النشر: |
2007 |
| مصطلحات موضوعية: |
Astronomy |
| الوصف: |
We describe and discuss the spectral and temporal characteristics of the prompt emission and X-ray afterglow emission of X-ray flashes (XRFs) detected and observed by Swift between December 2005 and September 2006. We compare these characteristics to a sample of X-ray rich gamma-ray bursts (XRRs) and conventional classical gamma-ray bursts (C-GRBs)observed during the same period. We confirm the correlation between Epeak and fluence noted by others and find further evidence that XRFs and C-GRBs form a continuum. We also confirmed that our known redshift samples are consistent with the correlation between the peak energy (Epeak) and the isotropic radiated energy (Eiso), so called the Epeak-Eiso relation. The spectral properties of X-ray afterglows are similar to those of gamma-ray burst afterglows, but the temporal properties of the two classes are quite different. We found that the light curves of C-GRBs afterglow show a break to steeper indices (shallow-to-steep break) at much earlier times than do XRF afterglows. Moreover, the overall luminosity of X-ray afterglows of XRFs are systematically smaller by a factor of two or more compared with that of C-GRBs. These distinct differences in the X-ray afterglow between XRFs and C-GRBs are key to understanding not only a mysterious shallow-to-steep phase in the X-ray afterglow but also the unique nature of XRFs. |
| نوع الوثيقة: |
Report |
| اللغة: |
English |
| URL الوصول: |
https://ntrs.nasa.gov/citations/20070034820 |
| ملاحظات: |
NCC5-637 |
| رقم الانضمام: |
edsnas.20070034820 |
| قاعدة البيانات: |
NASA Technical Reports |