Abstract
The 2009 monitoring campaign of M82 consisted of seven wide-field MERLIN (Thomasson 1986) observations at a frequency of 4.994GHz, observed between 2009 May and 2010 April. These were made using parallel hands of circular polarization, and were correlated with a total bandwidth of 16 MHz divided into 32 channels. Across all epochs combined a total on-source integration time of 286.5h was used. Each observing epoch was reduced and analysed individually and a deep exposure map was produced by combining all of these data. In addition to these, a single e-MERLIN observation was included in this study. This observation was made in 2010 December as part of the e-MERLIN commissioning programme and used a total bandwidth of 512MHz with a median frequency of 6.26GHz. These data were correlated into four individual sub-bands each divided into 512 frequency channels. These e-MERLIN observations were observed prior the installation of the new e-MERLIN wide-band IF system in spring 2011 and consequently only one hand of polarization was used and the data displayed reduced sensitivity in parts of the observing band. (2 data files).
Original language | English |
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Journal | VizieR Online Data Catalog |
Volume | 743 |
Publication status | Published - 2014 |
Keywords
- Galaxies: nearby
- Radio sources