  We investigate the acceleration source of the impulsive solar energetic
particle (SEP) events on 2007 January 24. Combining the in situ electron
measurements and remote-sensing solar observations, as well as the calculated
magnetic fields obtained from a potential-field source-surface model, we
demonstrate that the jets associated with the hard X-ray flares and type-III
radio bursts, rather than the slow and partial coronal mass ejections, are
closely related to the production of interplanetary electron streams. The jets,
originated from the well-connected active region (AR 10939) whose magnetic
polarity structure favors the eruption, are observed to be forming in a coronal
site, extending to a few solar radii, and having a good temporal correlation
with the electron solar release. The open-field lines near the jet site are
rooted in a negative polarity, along which energetic particles escape from the
flaring AR to the near-Earth space, consistent with the in situ electron pitch
angle distribution. The analysis enables us to propose a coronal magnetic
topology relating the impulsive SEP events to their solar source.
