MAT 1997

Torbet et al. use Ka band (centered on 30 GHz) and Q band (centered on 40 GHz) data from the ground-based MAT (Mobile Anisotropy Telescope) 1997 experiment on Cerro Toco, Chile, to constrain CMBR anisotropy.

The window functions were provided by E. Torbet. There are three files, one with the Ka (Ka1/2) $W_\ell$'s and two with the Q (Q1 and Q3/4) $W_\ell$'s. The first column in each window function file is $\ell$, which runs from 2 to 800 (although some $W_\ell$'s are not computed to $\ell = 800$). The last nine columns in the Ka1/2 file are the zero-lag Ka1/2 $W_\ell$'s for the 4, 5, ..., 12 point chops. The last eleven columns in the Q1 file are the zero-lag Q1 $W_\ell$'s for the 4, 5, ..., 14 point chops. The last ten columns in the Q3/4 file are the zero-lag Q3/4 $W_\ell$'s for the 5, 6, ..., 14 point chops.

Table: MAT 1997 Ka1/2 zero-lag Window Function Parameters

	$\ell_{e^{-0.5}}$	$\ell_{\rm e}$	$\ell_{\rm m}$	$\ell_{e^{-0.5}}$	$\sqrt{I(W_\ell)}$
4pt	45	63.4	62	82	0.839
5pt	65	86.5	83	103	0.706
6pt	86	107.4	104	124	0.648
7pt	106	127.3	123	145	0.550
8pt	126	145.1	144	165	0.520
9pt	145	165.5	163	184	0.459
10pt	165	182.3	183	204	0.442
11pt	184	191.9	203	224	0.417
12pt	204	215.0	222	243	0.373

Fig.: MAT 1997 Ka1/2 zero-lag window functions. (Postscript version here.)

Table: MAT 1997 Q1 zero-lag Window Function Parameters

	$\ell_{e^{-0.5}}$	$\ell_{\rm e}$	$\ell_{\rm m}$	$\ell_{e^{-0.5}}$	$\sqrt{I(W_\ell)}$
4pt	46	63.4	63	82	0.823
5pt	65	86.7	83	104	0.703
6pt	87	110.2	105	126	0.648
7pt	107	131.2	125	147	0.551
8pt	127	151.3	145	167	0.534
9pt	147	172.2	165	188	0.465
10pt	167	190.8	186	208	0.467
11pt	187	202.8	205	228	0.437
12pt	207	221.3	225	248	0.400
13pt	225	245.2	245	268	0.370
14pt	245	267.2	264	288	0.366

Fig.: MAT 1997 Q1 zero-lag window functions. (Postscript version here.)

Table: MAT 1997 Q3/4 zero-lag Window Function Parameters

	$\ell_{e^{-0.5}}$	$\ell_{\rm e}$	$\ell_{\rm m}$	$\ell_{e^{-0.5}}$	$\sqrt{I(W_\ell)}$
5pt	63	82.7	80	100	0.725
6pt	84	105.6	101	121	0.663
7pt	103	125.4	120	141	0.561
8pt	122	145.2	140	161	0.536
9pt	141	165.0	159	180	0.475
10pt	161	183.6	179	200	0.469
11pt	180	195.7	198	219	0.436
12pt	199	212.4	217	238	0.404
13pt	217	236.1	236	257	0.373
14pt	236	258.1	255	277	0.363

Fig.: MAT 1997 Q3/4 zero-lag window functions. (Postscript version here.)

The quoted bandtemperature values are computed for a flat bandpower spectrum. They are from Torbet et al. with 10% added in quadrature to their statistical 1 $\sigma$ error bars to account for the 1 $\sigma$ calibration uncertainty.

REFERENCES

Links to the experiment webpages.

E. Torbet, et al., ``A Measurement of the Angular Power Spectrum of the Microwave Background Made from the High Chilean Andes", Astrophys. J. Lett. 521, L79 (1999).