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- W1763788210 abstract "The whole set of INTEGRAL observations of type Ia supernova SN2014J, covering the period 19-162 days after the explosion has being analyzed. For spectral fitting the data are split into early and late periods covering days 19-35 and 50-162, respectively, optimized for $^{56}$Ni and $^{56}$Co lines. As expected for the early period much of the gamma-ray signal is confined to energies below $sim$200 keV, while for the late period it is most strong above 400 keV. In particular, in the late period $^{56}$Co lines at 847 and 1248 keV are detected at 4.7 and 4.3 $sigma$ respectively. The lightcurves in several representative energy bands are calculated for the entire period. The resulting spectra and lightcurves are compared with a subset of models. We confirm our previous finding that the gamma-ray data are broadly consistent with the expectations for canonical 1D models, such as delayed detonation or deflagration models for a near-Chandrasekhar mass WD. Late optical spectra (day 136 after the explosion) show rather symmetric Co and Fe lines profiles, suggesting that unless the viewing angle is special, the distribution of radioactive elements is symmetric in the ejecta." @default.
- W1763788210 created "2016-06-24" @default.
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- W1763788210 date "2015-10-09" @default.
- W1763788210 modified "2023-10-16" @default.
- W1763788210 title "GAMMA RAYS FROM TYPE Ia SUPERNOVA SN 2014J" @default.
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- W1763788210 doi "https://doi.org/10.1088/0004-637x/812/1/62" @default.
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