Global VLBI Observations of M82

A.R. McDonald, T.W. B. Muxlow, A. Pedlar, M.A. Garrett, K.A. Wills
2001 Symposium - International astronomical union  
Images are presented of the starburst galaxy M82 from a 20-station global VLBI experiment with an angular resolution of up to 3 mas. These images resolve several of the sources into a number of components and with future VLBI experiments the expansion of these components may be tracked on a ∼2 year timescale. Expansion of one of the brightest remnants in M82 has already been measured on a ∼10 year timescale using the European VLBI Network (EVN) alone and an expansion rate of 10,000 km
more » ... 10,000 km s−1calculated. Furthermore, limits on the deceleration of this remnant have been deduced. Further VLBI experiments will be able to better constrain the deceleration of the remnants on a ∼10 year timescale as they continue to interact with the interstellar medium in M82.
doi:10.1017/s0074180900221499 fatcat:fopckptwgrbdnhqqhug52uwbiy