Planck pre-launch status: Calibration of the Low Frequency Instrument flight model radiometers

Free Access

Table 6:

Receiver noise properties: 1/f knee frequency, slope, and r factor.
		1/ F SPECTRUM, R FACTOR, AND
		M-00	M-01	S-10	S-11
`RCA18`	$f_{\rm k}$	92	92	140	190
	$\alpha$	-1.62	-1.71	-1.49	-1.71
	r	1.17	1.17	1.17	1.16
	$\beta$	9.57	10.30	8.53	10.78
`RCA19`	$f_{\rm k}$	130	96	144	143
	$\alpha$	-1.75	-1.93	-1.80	-1.85
	r	1.12	1.12	1.14	1.13
	$\beta$	8.90	9.10	9.00	11.06
`RCA20`	$f_{\rm k}$	55.7	63.7	119.3	98.5
	$\alpha$	-1.63	-1.48	-1.36	-1.32
	r	1.03	1.02	1.03	1.04
	$\beta$	10.74	9.46	10.86	10.48
`RCA21`	$f_{\rm k}$	109	85	109	97
	$\alpha$	-1.59	-1.90	-1.61	-1.17
	r	1.21	1.21	1.18	1.18
	$\beta$	10.02	10.08	9.79	8.79
`RCA22`	$f_{\rm k}$	116	108	80	113
	$\alpha$	-1.59	-1.90	-1.61	-1.65
	r	1.21	1.21	1.18	1.18
	$\beta$	10.02	10.8	9.79	8.79
`RCA23`	$f_{\rm k}$	97	89	101	109
	$\alpha$	-1.41	-1.92	-1.90	-1.83
	r	1.07	1.07	1.08	1.08
	$\beta$	11.31	13.02	11.05	11.89
`RCA24`^a	$f_{\rm k}$	13.9	10.2	9.7	13.3
	$\alpha$	-1.13	-1.26	-1.15	-1.18
	r	0.991	0.974	0.971	0.962
	$\beta$	6.13	4.12	5.21	6.59
`RCA25`^b	$f_{\rm k}$	18.0	21.9	9.6	4.7
	$\alpha$	-1.12	-1.28	1.04	-0.89
	r	1.0289	1.059	-0.859	1.041
	$\beta$	6.87	6.88	4.96	6.82
`RCA26` $^{\rm c}$	$f_{\rm k}$	21.0	23.2	15.4	23.1
	$\alpha$	-1.02	-0.72	-0.67	-0.81
	r	1.085	1.061	1.131	1.119
	$\beta$	5.67	5.52	5.01	7.40
`RCA27`^d	$f_{\rm k}$	6.7	10.1	24.9	31.1
	$\alpha$	-1.02	-1.19	-1.39	-0.90
	r	1.012	1.004	1.093	1.075
	$\beta$	7.77	7.70	8.73	7.18
`RCA28`^e	$f_{\rm k}$	19.9	19.4	40.7	41.1
	$\alpha$	-1.39	-1.20	-1.57	-1.60
	r	1.058	1.050	0.955	0.939
	$\beta$	7.91	7.94	8.78	8.23

Notes. Data were taken setting the temperature of the loads at the lowest possible values. The 70 GHz 1/f knee frequencies are dominated by the thermal instabilities of the cryochamber. ^(a) $T_{\rm ref}=8.5$ K; $T_{\rm sky}=8.5$ K.
^(b) $T_{\rm ref}=8.0$ K; $T_{\rm sky}=10.5$ K. ^(c) $T_{\rm ref}=8.0$ K; $T_{\rm sky}=13.0$ K. ^(d) $T_{\rm ref}=9.5$ K; $T_{\rm sky}=12.8$ K. ^(e) $T_{\rm ref}=8.6$ K; $T_{\rm sky}=8.5$ K.

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.