Planck pre-launch status: Expected LFI polarisation capability

Free Access

Table 1:

Geometric parameters for the LFI focal plane.
Horn		Band	$\rho$ ^a	$\phi$ ^b	$\psi$ ^c
Lead	Trail				Side	Main
LFI-18	LFI-23	70 GHz	$87\hbox{$.\!\!^\circ$ }20$	$2\hbox{$.\!\!^\circ$ }46$	- $22\hbox{$.\!\!^\circ$ }03$	$67\hbox{$.\!\!^\circ$ }67$
LFI-19	LFI-22	70 GHz	$87\hbox{$.\!\!^\circ$ }77$	$1\hbox{$.\!\!^\circ$ }55$	- $22\hbox{$.\!\!^\circ$ }30$	$67\hbox{$.\!\!^\circ$ }70$
LFI-20	LFI-21	70 GHz	$88\hbox{$.\!\!^\circ$ }10$	$0\hbox{$.\!\!^\circ$ }63$	- $22\hbox{$.\!\!^\circ$ }36$	$67\hbox{$.\!\!^\circ$ }74$
LFI-24		44 GHz	$89\hbox{$.\!\!^\circ$ }05$	$0\hbox{$.\!\!^\circ$ }00$	$0\hbox{$.\!\!^\circ$ }00$	$90\hbox{$.\!\!^\circ$ }00$
LFI-26	LFI-25	44 GHz	$82\hbox{$.\!\!^\circ$ }59$	$4\hbox{$.\!\!^\circ$ }43$	- $112\hbox{$.\!\!^\circ$ }52$	- $23\hbox{$.\!\!^\circ$ }32$
LFI-28	LFI-27	30 GHz	$88\hbox{$.\!\!^\circ$ }90$	$1\hbox{$.\!\!^\circ$ }93$	- $22\hbox{$.\!\!^\circ$ }20$	$67\hbox{$.\!\!^\circ$ }50$

Notes. ^(a) Scan circle radius (ZS co-latitude); ^(b) phase along scan circle (ZS longitude); ^(c) polarisation orientation relative to ZS meridians (See Fig. 1), using the astronomical sign convention (positive from north to east). Note that the $\psi_{\rm MB}$ listed by Sandri et al. (2010) use a different geometrical definition. We only quote parameters for the leading horn in each matched pair: the values of $\phi$ and $\psi$ for the trailing horn are the negatives of those quoted.

Source LaTeX | All tables | In the text

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.