Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Astronomical Research with Liquid Mirror Telescopes   Liquid mirror telescopes are of interest to Astronomy because of their very
low capital and operating costs. Low cost has a potentially revolutionary
impact since it allows one to dedicate a large telescope to a narrowly focused
project that needs a large quantity of observations. The technology is now well
proven in the laboratory as well as in observatory settings and is stepping
into the mainstream of astronomical research. This paper has two main purposes.
a) To acquaint the astronomical community with LMT zenith observing and to
illustrate the LMT advantage with specific examples of research topics of
current interest that could be carried out only with LMTs because of their low
costs. I argue that LMTs are more versatile than generally thought and that the
challenge is to use LMTs in such ways as to maximize their advantages and
minimize their disadvantages. I briefly review specific issues regarding zenith
telescopes. I then illustrate the LMT advantage with specific examples of
astronomical research. b) I show that the large number of objects observed with
a surveying LMT allows one to carry out cosmological projects at low redshifts.
I show that a variability survey would obtain light curves for several
thousands of type Ia supernovae per year up to z=1 and easily discriminate
among competing cosmological models. The same survey would find large numbers
of MACHOs in clusters of galaxies and in background faint galaxies. Finally, I
discuss a spectrophotometric survey carried out with interference filters,
showing its power to discriminate among cosmological models and to study the
large-scale distribution of galaxies in the Universe.

35
The categories of this paper are: mtrl-th
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th
17
The categories of this paper are: q-fin
18
The categories of this paper are: econ
1
The categories of this paper are: cs
2
The categories of this paper are: math
3
The categories of this paper are: physics
25
The categories of this paper are: patt-sol
12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph