The warm absorber and X-ray variability of the Seyfert 1 galaxy NGC 3516 as seen by the XMM-Newton RGS

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Table 7:

Comparison of the ionisation parameters, hydrogen column densities and outflow velocities of the NGC 3516 warm absorber phases found in recent observations, shown in increasing order of $\xi$ .
Turner et al. (2005)^a			Markowitz et al. (2008)^b			Turner et al. (2008)^c				Present work^d
$\log \xi$ ^e $\sim$	$\ensuremath{N_{{\rm H}}}$ ^f $\sim$	v^g $\sim$	$\log \xi$ ^e $\sim$	$\ensuremath{N_{{\rm H}}}$ ^f $\sim$	v^g $\sim$	$\log \xi$ ^e $\sim$	$\ensuremath{N_{{\rm H}}}$ ^f $\sim$	v^g $\sim$	zone	$\log \xi$ ^e $\sim$	$\ensuremath{N_{{\rm H}}}$ ^f $\sim$	v^g $\sim$	phase
-	-	-	-	-	-	-2.4	0.2	?	1	-	-	-	-
-0.5	0.5	-200	0.3	5.5	?	0.25	0.05	?	2	0.9	0.4	-100	A
2.5	25	-1100	-	-	-	2.2	20	-1600	3	2.4	2	-1500	B
3.0	2	-1100	3.7	4	-1100^h	4.3	26	-1000	4	3.0	1	-900	C

Notes. ^(a) From the Apr. and Nov. 2001 XMM-Newton EPIC-pn spectra. The values of the ionisation parameter in $\xi$ form are given in Turner et al. (2008); ^(b) from the Oct. 2005 Suzaku XIS and HXD spectra; ^(c) from the Oct. 2006 XMM-Newton EPIC-pn and Chandra HETG spectra; ^(d) from the Oct. 2006 XMM-Newton EPIC-pn and RGS spectra; ^(e) ${\rm erg\ cm\ }{\rm s}^{-1}$ ; ^(f) 10²² ${\rm cm}^{-2}$ ; ^(g) flow velocity in $\ensuremath{{\rm km~s^{-1}}}$ ; ^(h) based on the velocity obtained in Turner et al. (2005).

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