Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The radio lightcurve of SN 2008iz in M82 revealed by Urumqi observations   We report on a set of 5 GHz Urumqi observations of the galaxy M82, made
between August 2005 and May 2009. From the resulting flux densities, we detect
a strong flare, starting in March or April and peaking in June 2008. We
identify this flare with supernova SN 2008iz. The time sampling of the radio
light curve allows us to obtain information on the precursor mass-loss rate,
the strength of the magnetic field in the radiating region, the explosion date,
and the deceleration of the expanding shock. We also check the possible
contribution of Synchrotron Self Absorption (SSA) to the radio light curve and
compare our model with other observations of the supernova at 22 GHz.

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The categories of this paper are: math
9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an
24
The categories of this paper are: dg-ga
20
The categories of this paper are: acc-phys
5
The categories of this paper are: gr-qc
1
The categories of this paper are: cs
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
8
The categories of this paper are: hep-ex
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The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ