surrounding circumstellar material.'
author:
- 'R. N. Manchester $^{1}$'
- 'B. M. Gaensler $^{2}$[^1]'
- 'V. C. Wheaton $^{1,3}$'
- 'L. Staveley-Smith $^{1}$'
- 'A. K. Tzioumis $^{1}$'
- 'N. S. Bizunok $^{2,4}$'
- 'M. J. Kesteven $^{1}$'
- 'J. E. Reynolds $^{1}$'
title: 'Evolution of the Radio Remnant of SN 1987A: 1990 – 2001'
---

=2em =17.5cm =24.6 cm =-2.5cm =-1.0cm =-1.0cm

[$^1$ Australia Telescope National Facility, CSIRO, PO Box 76, Epping NSW 1710\
Dick.Manchester@csiro.au\
$^2$ Center for Space Research, Massachusetts Institute of Technology, Cambridge MA 02139, USA\
$^3$ School of Physics, University of Sydney, NSW 2006\
$^4$ Boston University, Boston MA 02215, USA\
]{}

[**Keywords:**]{} circumstellar matter — radio continuum: ISM — supernovae: individual (SN 1987A) — supernova remnants

Introduction
============

As the closest observed supernova in nearly 400 years, SN 1987A in the Large Magellanic Cloud offers unique opportunities for detailed study of the evolution of a supernova and the birth of a supernova remnant. In the 14 years since the explosion was detected, it has been extensively studied in all wavelength bands from radio to gamma-ray using both ground- and space-based observatories. These observations have revealed a complex evolution of both the supernova itself and the 