Measuring Planck beams with planets | Astronomy & Astrophysics (A&A)

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Table 3:

Standard deviations on parameter estimates from a single Jupiter observation.
Band	$\sigma_{\rm cross}$	$\sigma_{\rm co}$	$\sigma_{FWHM}/{FWHM}$	$\sigma_\psi$	$\sigma_{\gamma_+}$	$\sigma_{\gamma_\times}$	$\sigma_A/A$	$\sigma_\tau/\tau$
(GHz)	(10^-4 arcmin)		(10^-6)	(10^-2 deg)	(10^-5)	(10^-5)	(10^-5)	(10^-5)
Low-Frequency Instrument
30	218	344	937	267	548	1270	164	...
44	125	152	572	53.1	143	118	92.1	...
70	26.6	35.6	418	34.3	38.9	141	51.6	...
High-Frequency Instrument (known $\tau$ )
100	7.24	25.3	157	13.0	19.2	36.1	10.1	0.00
143	3.74	6.76	69.7	4.30	4.68	6.17	4.77	0.00
217	0.473	2.26	23.4	3.86	9.96	3.86	2.26	0.00
353	8.96	9.81	13.3	4.72	22.9	2.86	1.83	0.00
545	0.295	0.167	5.15	0.167	0.763	0.521	0.866	0.00
857	0.351	0.153	1.87	0.287	0.454	0.239	0.398	0.00
High-Frequency Instrument (fitting $\tau$ )
100	7.13	37.3	144	13.8	18.7	37.7	33.0	96.3
143	4.41	15.6	80.8	5.36	6.91	7.10	18.3	88.8
217	0.494	4.11	30.0	5.03	12.3	4.75	6.18	26.7
353	49.3	52.0	72.2	25.8	126	20.7	13.7	34.1
545	0.300	0.341	5.49	0.172	0.828	0.521	0.970	6.25
857	0.351	0.164	1.87	0.287	0.454	0.238	0.412	1.38

The beam offset error in the cross-scan direction is $\sigma_{\rm cross}$ , and similarly for $\sigma_{\rm co}$ . The beam angle $\psi$ , shears $\gamma_+$ and $\gamma_\times$ , and amplitude A are defined in Sect. 2.5. The fractional FWHM error is derived from the error on the scale parameter s, also defined there. The time constant $\tau$ is defined in Sect. 2.4.

Source LaTeX | All tables | In the text

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