Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Asymfast, a method for convolving maps with asymmetric main beams   We describe a fast and accurate method to perform the convolution of a sky
map with a general asymmetric main beam along any given scanning strategy. The
method is based on the decomposition of the beam as a sum of circular
functions, here Gaussians. It can be easily implemented and is much faster than
pixel-by-pixel convolution. In addition, Asymfast can be used to estimate the
effective circularized beam transfer functions of CMB instruments with
non-symmetric main beam. This is shown using realistic simulations and by
comparison to analytical approximations which are available for Gaussian
elliptical beams. Finally, the application of this technique to Archeops data
is also described. Although developped within the framework of Cosmic Microwave
Background observations, our method can be applied to other areas of
astrophysics.

7
The categories of this paper are: hep-th
2
The categories of this paper are: math
19
The categories of this paper are: eess
14
The categories of this paper are: math-ph
17
The categories of this paper are: q-fin
26
The categories of this paper are: bayes-an
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The categories of this paper are: solv-int
4
The categories of this paper are: cond-mat
3
The categories of this paper are: physics
9
The categories of this paper are: nlin
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The categories of this paper are: q-alg
29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio
13
The categories of this paper are: quant-ph
18
The categories of this paper are: econ