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← Revision 7 as of 2013-06-18 02:34:16 ⇥
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| .Warning: the data are apparently not well calibrated yet, so the plots shown below might not be correct for now. | == Results == .The spectrum map is defined by index = log(Map_140/Map_240)/alog(140.0/240.0). We can clearly see a change in the spectral index in the source. This is confirmed by the correlation plot which shows the values in the pixel of the 240 GHz map as a function of the value of the corresponding 140GHz map. |
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| || {{attachment:1mm_map_m82.png}} || {{attachment:2mm_map_m82.png||width=550,height=400}} || || [[attachment:1mm_map_m82.pdf]] || [[attachment:2mm_map_m82.pdf]] || |
|| {{attachment:1mm_map_m82.png}} || {{attachment:2mm_map_m82.png}} || {{attachment:spectre.png}} || || [[attachment:1mm_map_m82.pdf]] || [[attachment:2mm_map_m82.pdf]] || [[attachment:spectre.pdf]] || |
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| || {{attachment:correlation.png||width=550,height=400}} || | || {{attachment:correlation.png||width=850,height=700}} || |
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| || {{attachment:spectre.png||width=550,height=400}} || || [[attachment:spectre.pdf]] || |
== Possible interpretation == .The slopes of 0.6 and 1.25 correspond respectively to spectral index of +1 and -0.4. We might understand it if we consider that the contribution of the emission of M82 is due to dust and free-free. The center of M82 is therefore dominated by free-free emission and the outskirt is dominated by dust. |
M82 spectrum
Results
- The spectrum map is defined by index = log(Map_140/Map_240)/alog(140.0/240.0). We can clearly see a change in the spectral index in the source. This is confirmed by the correlation plot which shows the values in the pixel of the 240 GHz map as a function of the value of the corresponding 140GHz map.
Possible interpretation
- The slopes of 0.6 and 1.25 correspond respectively to spectral index of +1 and -0.4. We might understand it if we consider that the contribution of the emission of M82 is due to dust and free-free. The center of M82 is therefore dominated by free-free emission and the outskirt is dominated by dust.