Table 1: Spectral model definitions.
Parameter Definition

P₁ Power law representing the residual

SP contamination.

G₁, G₂ Gaussians representing the Al K $\alpha$

and Si K $\alpha$ FX lines.

C₁, C₂ Constants representing the different

solid angles of the extraction

annuli and calibration offsets between

the two detectors.

A₁ CXB LHB thermal component.

A₂ CXB cooler halo thermal component.

A₃ CXB hotter halo thermal component.

P₂ CXB extragalactic power law

component.

$N_{\rm Hg}$ Column density of Galactic hydrogen.

AC Cluster thermal component.

$N_{\rm Hc}$ Column density foreground to the

cluster, includes both Galactic

hydrogen and material associated

with the cluster.

**Table 1:** Spectral model definitions.
Parameter	Definition
P₁	Power law representing the residual
	SP contamination.
G₁, G₂	Gaussians representing the Al K $\alpha$
	and Si K $\alpha$ FX lines.
C₁, C₂	Constants representing the different
	solid angles of the extraction
	annuli and calibration offsets between
	the two detectors.
A₁	CXB LHB thermal component.
A₂	CXB cooler halo thermal component.
A₃	CXB hotter halo thermal component.
P₂	CXB extragalactic power law
	component.
$N_{\rm Hg}$	Column density of Galactic hydrogen.
AC	Cluster thermal component.
$N_{\rm Hc}$	Column density foreground to the
	cluster, includes both Galactic
	hydrogen and material associated
	with the cluster.

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