De Bernardis et al. (ARGO-Hercules) and Masi et al. (ARGO-Aries & Taurus) use
0.5, 0.8, 1.2, and 2.0 mm data from the balloon-borne ARGO experiment to
constrain CMBR anisotropy. Ratra et al. (1999a) summarize the experiment.
The longest wavelength, 2.0 mm, data is thought to be pure CMBR anisotropy.
The FWHM of this beam, assumed to be gaussian, is
(one standard deviation uncertainty). The zero-lag window
function of the smooth-scan, square wave lockin experiment is
The first column in the window function
is , which runs from 2 to
700. The next column is the 2.0 mm zero-lag .
The quoted bandtemperature values are for the Hercules scan 2.0 mm
data and are from Ratra et al. (1999a). They were computed assuming a
flat bandpower spectrum and, following Ganga et al., account for the
ARGO absolute calibration uncertainty of 5% as well as the beamwidth
uncertainty. Aries & Taurus scan results are not quoted since an
analysis that accounts for offset and drift removal has not yet been
Ratra et al. (1999a,b) use the ARGO data to constrain cosmological parameters.
Link to the experiment webpage.
P. de Bernardis, et al., ``Degree-Scale Observations of Cosmic Microwave
Background Anisotropies", Astrophys. J. Lett. 422, L33 (1994).
K. Ganga, B. Ratra, J.O. Gundersen, and N. Sugiyama, ``UCSB South Pole
1994 Cosmic Microwave Background Anisotropy Measurement Constraints on
Open and Flat- Cold Dark Matter Cosmogonies",
Astrophys. J. 484, 7
S. Masi, P. de Bernardis, M. de Petris, M. Gervasi, A. Boscaleri, E. Aquilini,
L. Martinis, and F. Scaramuzzi, ``Foregrounds Removal and CMB Fluctuations in
a Multiband Anisotropy Experiment: ARGO 1993", Astrophys. J. Lett.
463, L47 (1996).
B. Ratra, K. Ganga, R. Stompor, N. Sugiyama, P. de Bernardis, and K.M.
Górski, ``ARGO CMB Anisotropy Measurement Constraints on Open and
Flat- Cold Dark Matter Cosmogonies", Astrophys. J. 510, 11(1999a).
B. Ratra, R. Stompor, K. Ganga, G. Rocha, N. Sugiyama, and K.M. Górski, ``Cosmic Microwave Background Anisotropy Constraints on Open and Flat- Cold Dark Matter Cosmogonies from UCSB South Pole, ARGO, MAX, White Dish, and SuZIE Data", Astrophys. J. 517, 549 (1999b).