Difference between revisions of "Summary LFI"
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{{DISPLAYTITLE:Summary of LFI data characteristics}} | {{DISPLAYTITLE:Summary of LFI data characteristics}} | ||
| − | Quantification of the performance of LFI is summarized in Table 1 below. All the details can be found in the LFI data processing paper | + | Quantification of the performance of LFI is summarized in Table 1 below. All the details can be found in the LFI data processing paper {{PlanckPapers|planck2016-l02}}. |
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{| border="1" cellspacing="0" cellpadding="2" align="center" | {| border="1" cellspacing="0" cellpadding="2" align="center" | ||
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|width="100" | 44.1 | |width="100" | 44.1 | ||
|width="100" | 70.4 | |width="100" | 70.4 | ||
| + | |- | ||
| + | |width="320" | Bandwidth [GHz] | ||
| + | |width="100" | 9.89 | ||
| + | |width="100" | 10.72 | ||
| + | |width="100" | 14.90 | ||
|- | |- | ||
|width="320" | Scanning beam FWHM<sup>a</sup> [arcmin] | |width="320" | Scanning beam FWHM<sup>a</sup> [arcmin] | ||
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|width="320" | Effective beam FWHM<sup>b</sup> [arcmin] | |width="320" | Effective beam FWHM<sup>b</sup> [arcmin] | ||
| − | |width="100" | 32.29 | + | |width="100" | 32.29 |
| − | |width="100" | 27.00 | + | |width="100" | 27.00 |
| − | |width="100" | 13. | + | |width="100" | 13.22 |
|- | |- | ||
|width="320" | White noise level in timelines<sup>c</sup> [μK<sub>CMB</sub> s<sup>1/2</sup>] | |width="320" | White noise level in timelines<sup>c</sup> [μK<sub>CMB</sub> s<sup>1/2</sup>] | ||
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<sup>a</sup> Determined by fitting Jupiter observations directly in the timelines. | <sup>a</sup> Determined by fitting Jupiter observations directly in the timelines. | ||
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<!-- {{PlanckPapers|planck2013-p05}} --> | <!-- {{PlanckPapers|planck2013-p05}} --> | ||
| − | <sup>c</sup> | + | <sup>c</sup> Typical values derived from fitting noise spectra |
| − | <sup>d</sup> difference between first and last iteration of the iterative calibration (for 30 and 44 GHz) or E2E 2015 result (for 70 GHz). In 2015 the calibration uncertainity was 0.35% and 0.26 % at 30 and 44, respectively. | + | <sup>d</sup> difference between first and last iteration of the iterative calibration (for 30 and 44 GHz) or E2E 2015 result (for 70 GHz). In 2015 the calibration uncertainity was 0.35% and 0.26% at 30 and 44, respectively. |
Latest revision as of 16:00, 5 July 2018
Quantification of the performance of LFI is summarized in Table 1 below. All the details can be found in the LFI data processing paper Planck-2020-A2[1].
| Parameter | 30 GHz | 44 GHz | 70 GHz |
|---|---|---|---|
| Centre frequency [GHz] | 28.4 | 44.1 | 70.4 |
| Bandwidth [GHz] | 9.89 | 10.72 | 14.90 |
| Scanning beam FWHMa [arcmin] | 33.10 | 27.94 | 13.08 |
| Scanning beam ellipticitya | 1.37 | 1.25 | 1.27 |
| Effective beam FWHMb [arcmin] | 32.29 | 27.00 | 13.22 |
| White noise level in timelinesc [μKCMB s1/2] | 147.9 | 174.0 | 151.9 |
| fkneec [mHz] | 113.9 | 53.0 | 19.6 |
| 1/f slopec | -0.92 | -0.88 | -1.20 |
| Overall calibration uncertaintyd [%] | 0.17 | 0.12 | 0.20 |
a Determined by fitting Jupiter observations directly in the timelines.
b Calculated from the main beam solid angle of the effective beam, Ωeff = mean(Ω). These values are used in the source extraction pipeline (Planck-2015-A26[2]).
c Typical values derived from fitting noise spectra
d difference between first and last iteration of the iterative calibration (for 30 and 44 GHz) or E2E 2015 result (for 70 GHz). In 2015 the calibration uncertainity was 0.35% and 0.26% at 30 and 44, respectively.
References[edit]
- ↑ Planck 2018 results. II. Low Frequency Instrument data processing, Planck Collaboration, 2020, A&A, 641, A2.
- ↑ Planck 2015 results. XXVI. The second Planck catalogue of compact sources, Planck Collaboration, 2016, A&A, 594, A26.
(Planck) Low Frequency Instrument
Full-Width-at-Half-Maximum
Cosmic Microwave background
