2006/10/31 by En-Wei Liang, Bin-Bin Zhang, Mike Stamatikos +5 · 3 citations
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics and Cosmic Phenomena #Gamma-ray bursts and supernovae #Lag #Light curve #Pulse (music) #Radiation #Spectral energy distribution #Spectral power distribution #Spectral properties #Time lag #astro-ph
paper · pdf · doi:10.1086/510516
published as Astrophys.J.653:L81-L84,2006 · 9 pages in emulateapj format, including 4 figures and 1 table, accepted for publication in ApJ Letters
arxiv created 2006/10/31 · openalex publication_date 2006/12/06 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The spectral and temporal properties of the nonthermal emission of the nearby XRF 060218 in the 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 nonthermal emission detected by 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 Compton Gamma Ray Observatory ( 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 σ 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.