Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: ESTIMATING MICROWAVE POWER SPECTRA   A new method for estimating the power spectrum $C_l$ from cosmic microwave
background (CMB) maps was recently presented by the author and applied to the 2
year COBE data. It was found that the spectral resolution $\Delta l$ for COBE
could be more than doubled at $l=15$, thereby revealing previously unresolved
features in the power spectrum. Whereas that paper was rather technical, the
present paper shows that all qualitative features of this method can be
understood from a simple analogy with quantum mechanics.

17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
0
The categories of this paper are: hep-ph
19
The categories of this paper are: eess
16
The categories of this paper are: stat
14
The categories of this paper are: math-ph
21
The categories of this paper are: adap-org
35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
2
The categories of this paper are: math
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
28
The categories of this paper are: alg-geom
31
The categories of this paper are: ao-sci
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con