Study of the GeV to TeV morphology of the γ Cygni SNR (G 78.2+2.1) with MAGIC and Fermi-LAT - Evidence for cosmic ray escape

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Volume 670 (February 2023)

A&A, 670 (2023) A8

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Table 3

Results of the spectral analysis from the Fermi-LAT and MAGIC analysis for each source component.

Source name	E₀ (TeV)	Det. Sign. (σ)
SNR Shell	1.0	6.1
MAGIC J2019+408	1.0	16.7
Arc (annular sector)	1.0	10.1
Arc (Gaussian model)	1.0	10.3

		Fermi-LAT
SNR Shell		−2.11 ± 0.06_stat ± 0.01_sys	0.05	23.2
MAGIC J2019+408		−1.86 ± 0.13_stat ± 0.01_sys	0.05	8.9

Notes. All sources were best fit with a power-law function with flux normalisation N₀, spectral index Γ, and scaling energy E₀. The model for fitting the Fermi-LAT data included the model for the arc region (either annular sector or Gaussian), but it was not found to be significant.

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