Liang2006 XRF060218的时间特性和谱时延

主要内容:


精彩摘抄:

Spectrum, with thermal component (Dotted line).

文章信息:

astro-ph/0610956 [abs, ps, pdf, other] :

Title: Temporal Profiles and Spectral Lags of XRF 060218
Authors: En-Wei Liang, Bin-Bin Zhang, Mike Stamatikos, Bing Zhang, Jay Norris, Neil Gehrels, Jin Zhang, Z. G. Dai
Comments: 9 pages in emulateapj format, including 4 figures and 1 table, accepted for publication in ApJ Letters

The spectral and temporal properties of the non-thermal emission ofthe nearby XRF 060218 in 0.3-150 keV band are studied. We show that both the spectral energy distribution and the light curve properties suggest the same origin of the non-thermal emission detected by {\em Swift} BAT and XRT. This event has the longest pulse duration and spectral lag observed to date among the known GRBs. The pulse structure and its energy dependence are analogous to typical GRBs. By extrapolating the observed spectral lag to the {\em CGRO/BATSE} bands we find that the hypothesis that this event complies with the same luminosity-lag relation with bright GRBs cannot be ruled out at $2\sigma$ significance level. These intriguing facts, along with its compliance with the Amati-relation, indicate that XRF 060218 shares the similar radiation physics as typical GRBs.