التفاصيل البيبلوغرافية
| العنوان: |
The GRB 030227 Detected by INTEGRAL: Another Sign of Compton Scattering in X-rays. |
| المؤلفون: |
Castro-Tirado, A. J., Gorosabel, J., Guziy, S., Reverte, D., Castro Cerón, J. M., de Ugarte Postigo, A., Tanvir, N., Mereghetti, S., Tiengo, A., Pandey, S. B., Masetti, N., Pedersen, H., Pérez Ramírez, M. D. |
| المصدر: |
AIP Conference Proceedings; 2004, Vol. 727 Issue 1, p491-494, 4p |
| مصطلحات موضوعية: |
GAMMA ray bursts, X-ray bursts, AFTERGLOW (Physics), ASTROPHYSICS, ASTRONOMY, PHYSICS |
| مستخلص: |
Multiwavelengthp observations of a GRB detected by INTEGRAL (GRB 030227) revealed a dim optical afterglow (OA) that would not have been detected by many previous searches due to its faintess (R∼ 23). This OA was seen to decline following a power law decay with index α = -0.95 ± 0.16. The spectral index β of the OA yields -1.32 ± 0.15, with the intrinsec absorption consistent with zero. These values may be explained by a relativistic expansion of a fireball in an homogeneous medium. We also find evidence for inverse Compton scattering in X-rays. A possible break is detected at ∼ 1.5 days. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR] |
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