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Direct detection of a magnetic field in the innermost regions of an accretion disk

Author

Listed:
  • Jean-François Donati

    (Observatoire Midi-Pyrénées)

  • Fréderic Paletou

    (Observatoire Midi-Pyrénées)

  • Jérome Bouvier

    (Université J. Fourier)

  • Jonathan Ferreira

    (Université J. Fourier)

Abstract

Field patterns in Orion Accretion disks are important building blocks in astrophysics and are found in a wide range of contexts, around protostars in star-forming regions and around supermassive black holes at the centre of galaxies. Magnetic fields are supposedly a key ingredient of these disks, yet no direct observations of these fields have been available to constrain existing disk models near the critical central regions. A new spectrograph/spectropolarimeter called ESPaDOnS, fitted on a 3.6-metre telescope on Mauna Kea in Hawaii, has now filled this gap. It has been used to detect a magnetic field in the core of FU Orionis, a variable star near Orion's ‘shoulder’.

Suggested Citation

  • Jean-François Donati & Fréderic Paletou & Jérome Bouvier & Jonathan Ferreira, 2005. "Direct detection of a magnetic field in the innermost regions of an accretion disk," Nature, Nature, vol. 438(7067), pages 466-469, November.
    • Handle: RePEc:nat:nature:v:438:y:2005:i:7067:d:10.1038_nature04253
    DOI: 10.1038/nature04253
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