WEBT multiwavelength monitoring and XMM-Newton observations of BL Lacertae in 2007–2008 - Unveiling different emission components

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Table 5:

Main parameters of the helical model for the fit to the ``XMM-Newton'' broad-band SED of December 2007 - January 2008.
Parameter	Low	High
$\zeta$	$30 \hbox{$^\circ$ }$	$30 \hbox{$^\circ$ }$
$\psi$	$25 \hbox{$^\circ$ }$	$25 \hbox{$^\circ$ }$
a	$110 \hbox{$^\circ$ }$	$110 \hbox{$^\circ$ }$
$\phi$	$-8 \hbox{$^\circ$ }$	$20 \hbox{$^\circ$ }$
$\log \nu'_{\rm s}(0)$	14.0	17.8
$c_{\rm min,max}$	2.5	2.5
$\log l_{\rm min}$	-3.2	-3.2
$\log l_{\rm max}$	-1.6	-1.6
$\log \gamma_{\rm max}(0)$	3.5	4.4
$c_\gamma$	1.25	1.25
$\log l_\gamma$	-1.6	-1.6
$\alpha_0$	0.5	0.5
$\Gamma$	10	10
$c_{\rm s}$	1	1
$\log l_{\rm s}$	-1	-1
$c_{\rm c}$	1	1
$\log l_{\rm c}$	-1	-1

The differences between the low- and high-energy synchrotron+SSC components are easily seen.

Source LaTeX | All tables | In the text

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