Hot gas and magnetic arms of NGC 6946: Indications for reconnection heating?

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Table 13

Averaged parameters of the hot gas in and above the spiral arm regions of NGC 6946.

Region	(nη^-0.5)^a	(M_gasη^0.5)^a	(E_thη^0.5)^a	(ϵ_thη^-0.5)^a
	[10^-3cm^-3]	[10⁶M_⊙]	[10⁵⁴ erg]	[10^-12 erg cm^-3]

A	1.91	5.82	6.14	1.70
E	1.41	5.58	6.30	1.34
G	2.38	12.11	12.49	2.06
H	1.52	14.63	15.39	1.35

Notes. The columns are the region name, electron number density, total gas mass, total thermal energy, and thermal energy density.

^(a)

η is the volume filling factor.

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