Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Multi-wavelength Polarimetry and Variability Study of M87 Jet   We present a high resolution polarimetry and variability study of the M87 jet
using VLA and HST data taken during 2002 to 2008. Both data-sets have an
angular resolution as high as 0.06$"$, which is 2-3 times better than previous
observations. New morphological details are revealed in both the optical and
radio, which can help to reveal the energetic and magnetic field structure of
the jet. By comparing the data with previously published HST and VLA
observations, we show that the jet$'$s morphology in total and polarized light
is changing significantly on timescales of $\sim$a decade. We compare the
evolution of the inner jet (particularly the nucleus and knot HST-1), when our
observations overlap with the multi-wavelength monitoring campaigns conducted
with HST and Chandra. We use these data to comment on particle acceleration and
main emission processes.

25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph
4
The categories of this paper are: cond-mat
34
The categories of this paper are: chem-ph
21
The categories of this paper are: adap-org
14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin
17
The categories of this paper are: q-fin
20
The categories of this paper are: acc-phys
12
The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th
7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con