Triggering nuclear and galaxy activity in the Bullet cluster

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Table 3.

Best-fitting parameters of the candidate CT source.

Parameter	Value	Units
Redshift	0.31
FeK_α EW ^(a)			2.3	keV
χ²/d.o.f.			0.26/2
/χ² prob.			0.13/88%
2–10 keV luminosity ^(b)		1.8	10⁴² erg s⁻¹

Notes. Best-fit values with uncertainties at the 90% confidence level for one parameter of interest (Δχ² = 2.706), obtained by fitting the Chandra spectrum grouped to have at least 30 total counts per bin.

^(a)

Line equivalent width;

^(b)

observed luminosity.

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