WASP-12b magnetic field

Aline Vidotto, Moira Jardine and Christiane Helling detected in 2010² "the presence of an extended material ahead of the planetary orbit […] of the gas giant planet WASP-12b […]. [T]his material extends out to 4.2 planetary radii […], implying an upper limit of Bp<24G."

Methods

Near-UV transit observations of the exoplanet WASP-12b using the Hubble Space Telescope.
(No further information available)

References

1. MEYERS Catherine (2011). Alien world's fast orbit creates shock waves. ScienceNOW (ISSN 1947-8062), 22 April 2011. Retrieved from ScienceNOW on 25 April 2011.

2. VIDOTTO Aline, Moira JARDINE & Christiane HELLING (2010). Exoplanet magnetic fields and bow shocks. Royal Astronomical Society's National Astronomy Meeting, 17-21 April 2011, record 194 of 382.

Want to know more?

ScienceNOW - Commentary by Meyers: In this ScienceNOW page you can read the commentary by Meyers, which is, perhaps, a bit more explicit than the abstract published by the Royal Aeronautical Society.
Wiki of Science - Magnetospheres in exoplanets: This Wiki of Science "pseudoscience" page offers some more information about research interpretation and future hypotheses.
Wikipedia - Bow shocks: This Wikipedia page explains magnetospheric bow shocks (as they apply to Earth) and other bow shocks in the universe a bit further.