Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Testing General Relativity with High-Resolution Imaging of Sgr A*   Submilliarcsecond astrometry and imaging of the black hole Sgr A* at the
Galactic Center may become possible in the near future at infrared and
submillimetre wavelengths. This resolution is sufficient to observe the
silhouette the supermassive black hole in the Galactic center casts upon
background emission. However, more exciting is the prospect of observing ``hot
spots'' in the accretion flow. Here we discuss how such measurements may be
used to test not only the consistency of General Relativity, but also the
validity of the Kerr metric in particular.

31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
19
The categories of this paper are: eess
17
The categories of this paper are: q-fin
7
The categories of this paper are: hep-th
4
The categories of this paper are: cond-mat
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio