The western nucleus of Arp 220. Monitoring its maser line and continuum structures.

Emmanouel Rovilos, Philip J. Diamond, Colin J. Lonsdale, Carol J. Lonsdale, Harding E. Smith

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    High angular resoln. imaging of Arp 220 has revealed that the small scale continuum emission breaks down into several compact components, identified as radio supernovae. Their existence proves that the energetically important source in the core of Arp 220 is a massive starburst. We have monitored the supernovae using the VLBA for a period of 6.5 years and present the light curves of the most luminous sources. They seem to be decaying slower than previously thought and that might have implications in the starburst model, given that the no. of new sources is also lower than predicted. [on SciFinder (R)]
    Original languageEnglish
    Title of host publicationAstronomical Society of the Pacific Conference Series
    Volume320
    Publication statusPublished - 2004

    Keywords

    • Masers (cosmic; monitoring maser line and continuum structures of western nucleus of Arp 220); Starburst galaxies; Supernovas (monitoring maser line and continuum structures of western nucleus of Arp 220)

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