التفاصيل البيبلوغرافية
| العنوان: |
The prompt-afterglow connection in gamma-ray bursts: a comprehensive statistical analysis of Swift X-ray light curves |
| المؤلفون: |
R. Margutti, E. Zaninoni, M. G. Bernardini, G. Chincarini, F. Pasotti, C. Guidorzi, L. Angelini, D. N. Burrows, M. Capalbi, Phil A. Evans, N. Gehrels, J. Kennea, V. Mangano, A. Moretti, J. Nousek, Julian Paul Osborne, Kim L. Page, M. Perri, J. Racusin, P. Romano, B. Sbarufatti, S. Stafford, M. Stamatikos |
| سنة النشر: |
2012 |
| المجموعة: |
University of Leicester: Figshare |
| مصطلحات موضوعية: |
Uncategorized, Science & Technology, Physical Sciences, Astronomy & Astrophysics, radiation mechanism: non-thermal, gamma-ray burst: general, FLARING ACTIVITY, COMPLETE SAMPLE, COLUMN DENSITY, CENTRAL ENGINE, JET BREAKS, 1ST SURVEY, XRT DATA, EMISSION, LONG, FLARES |
| الوصف: |
We present a comprehensive statistical analysis of Swift X-ray light curves of gamma-ray bursts (GRBs) collecting data from more than 650 GRBs discovered by Swift and other facilities. The unprecedented sample size allows us to constrain the rest-frame X-ray properties of GRBs from a statistical perspective, with particular reference to intrinsic time-scales and the energetics of the different light-curve phases in a common rest-frame 0.3–30 keV energy band. Temporal variability episodes are also studied and their properties constrained. Two fundamental questions drive this effort: (i) Does the X-ray emission retain any kind of ‘memory’ of the prompt γ-ray phase? (ii) Where is the dividing line between long and short GRB X-ray properties? We show that short GRBs decay faster, are less luminous and less energetic than long GRBs in the X-rays, but are interestingly characterized by similar intrinsic absorption. We furthermore reveal the existence of a number of statistically significant relations that link the X-ray to prompt γ-ray parameters in long GRBs; short GRBs are outliers of the majority of these two-parameter relations. However and more importantly, we report on the existence of a universal three-parameter scaling that links the X-ray and the γ-ray energy to the prompt spectral peak energy of both long and short GRBs: EX, iso∝E[Superscript: 1.00 ± 0.06]γ, iso/E[Superscript: 0.60 ± 0.10]pk. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
unknown |
| Relation: |
2381/36510; https://figshare.com/articles/journal_contribution/The_prompt-afterglow_connection_in_gamma-ray_bursts_a_comprehensive_statistical_analysis_of_Swift_X-ray_light_curves/10152272 |
| الاتاحة: |
https://figshare.com/articles/journal_contribution/The_prompt-afterglow_connection_in_gamma-ray_bursts_a_comprehensive_statistical_analysis_of_Swift_X-ray_light_curves/10152272 |
| Rights: |
All Rights Reserved |
| رقم الانضمام: |
edsbas.371CF34B |
| قاعدة البيانات: |
BASE |