Zeeman splitting in OH megamasers

Timothy Robishaw, Carl Heiles, Eliot Quataert

Research output: Contribution to journalArticlepeer-review


We detected significant Zeeman splitting in the 1667 MHz OH megamaser emission from four ultraluminous galaxies. These detections, in addition to being the first extragalactic detection of the Zeeman effect in an emission line, suggest that OH megamasers are excellent extragalactic magnetometers.

Original languageEnglish (US)
Pages (from-to)467-470
Number of pages4
JournalProceedings of the International Astronomical Union
Issue numberS242
StatePublished - Mar 2007
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


  • Galaxies: magnetic fields
  • Galaxies: starburst
  • ISM: molecules
  • Masers


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