Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: MSAM1-94: Repeated Measurement of Medium-Scale Anisotropy in the Cosmic
  Microwave Background Radiation   The second flight of the Medium Scale Anisotropy Measurement (MSAM1-94)
observed the same field as the first flight (MSAM1-92) to confirm our earlier
measurement of cosmic microwave background radiation (CMBR) anisotropy. This
instrument chops a 30\arcmin\ beam in a 3 position pattern with a throw of
$\pm40\arcmin$, and simultaneously measures single and double differenced sky
signals. We observe in four spectral channels centered at 5.6, 9.0, 16.5, and
22.5~\icm, providing sensitivity to the peak of the CMBR and to thermal
emission from interstellar dust. The dust component correlates well with the
\IRAS\ 100~\micron\ map. The CMBR observations in our double difference channel
correlate well with the earlier observations, but the single difference channel
shows some discrepancies. We obtain a detection of fluctuations in the MSAM1-94
dataset that match CMBR in our spectral bands of $\Delta T/T =
1.9^{+1.3}_{-0.7}\times 10^{-5}$ (90\% confidence interval, including
calibration uncertainty) for total rms Gaussian fluctuations with correlation
angle 0\fdg3, using the double difference demodulation.

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The categories of this paper are: quant-ph
31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
32
The categories of this paper are: atom-ph
7
The categories of this paper are: hep-th
37
The categories of this paper are: supr-con
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The categories of this paper are: eess
2
The categories of this paper are: math
27
The categories of this paper are: comp-gas
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The categories of this paper are: acc-phys
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The categories of this paper are: physics
1
The categories of this paper are: cs
14
The categories of this paper are: math-ph