Does NASA's New Horizons flyby probe to Pluto have instruments to measure Pluto's (or Charon's) magnetic field, if any?
I'm a bit confused by the Wikipedia article which says that New Horizons, during its flyby of Jupiter, on one hand:
Travelling through the planet's magnetosphere New Horizons collected valuable particle readings. "Bubbles" of plasma which are believed to be formed from material ejected by the moon Io were noticed in the magnetotail.
But then on the other hand:
An objective to measure any magnetic field of Pluto was dropped. A magnetometer instrument could not be implemented within a reasonable mass budget and schedule, and SWAP and PEPSSI could do an indirect job detecting some magnetic field around Pluto.
And how true is this story which I read or heard somewhere? That when New Horizons was being built and launched, no one really believed that Pluto could have a magnetic field. But since then planetary science has advanced and it is now plausible that it might have a magnetic field, because of tidal forces between Pluto and Charon which might make both objects somewhat fluid and possibly generating magnetic fields.