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.[45] "Bubbles" of plasma which are believed to be formed from material ejected by the moon Io were noticed in the magnetotail.[47]
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.