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 6:

The best-fit parameters of the narrow O VII forbidden emission line shown in Fig. 11.
Parameter	Obs. 1	Obs. 2	Obs. 3	Obs. 4
$\lambda_0$ ^a	22.10	22.10	22.10	22.10
$\lambda$ ^b	$22.11 \pm 0.06$	$22.09 \pm 0.04$	$22.11 \pm 0.02$	$22.12 \pm 0.08$
Flow v^c	$+100 \pm 800$	$-100 \pm 500$	$+100 \pm 300$	$+300 \pm 1100$
FWHM^d	<0.1	<0.1	<0.1	<0.1
$\sigma_{v}$ ^e	<600	<600	<600	<600
Line Normalisation^f	$1.0 \pm 0.6$	$1.0 \pm 0.6$	$1.7 \pm 0.5$	$0.9 \pm 0.7$

Notes. Obtained by adding a Gaussian component to the best-fit xabs model of all four observations. The errors correspond to a $\Delta \chi^{2}$ of 2.
^(a) Theoretical rest frame wavelength in Å; ^(b) wavelength in the rest frame of NGC 3516 in Å; ^(c) $\ensuremath{{\rm km~s^{-1}}}$ ; ^(d) Å; ^(e) rms velocity in $\ensuremath{{\rm km~s^{-1}}}$ ( $\sigma_{v}={{\it FWHM}}/\sqrt{\ln 256}$ ); ^(f) 10⁴⁹ photons ${\rm s}^{-1}$ .

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