Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dogs that Don't Bark (The Tale of Baryonic Dark Matter in Galaxies)   Fifteen years or so ago, it was commonly argued; ``If we want to believe the
observations rather than our prejudice, we should take as our best bet that
dark haloes are baryonic.'' Such a viewpoint is not often heard today. This
change-of-mind has been enforced upon us largely by the microlensing
experiments. Particle dark matter differs from (most types of) baryonic dark
matter in that it does not produce microlensing events. The familiar parade of
baryonic candidates has now been whittled down, and perhaps only one remains as
a possible substantial contributor to the dark matter in the Galaxy's halo.
This review assesses the distribution of missing matter in the Galaxy, the
likely baryonic dark matter suspects, the evidence from microlensing and from
the halo white dwarf searches.

33
The categories of this paper are: plasm-ph
19
The categories of this paper are: eess
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an
21
The categories of this paper are: adap-org
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
4
The categories of this paper are: cond-mat
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph