  We present a multiwavelength analysis of 20 EUV jets which occurred at the
periphery of active regions close to sunspots. We discuss the physical
parameters of the jets and their relation with other phenomena such as H alpha
surges, nonthermal type III radio bursts and hard X-ray emission. Using AIA
wavelength channels sensitive to coronal temperatures, we studied the
temperature distribution in the jets using the line-of-sight Differential
Emission Measure technique. We also investigated the role of the photospheric
magnetic field using the LOS magnetogram data from the HMI. The lifetime of
jets range from 5 to 39 minutes with an average of 18 minutes and their
velocities range from 87 to 532 km/s with an average of 271 km/s. Most of the
jets are co-temporal with nonthermal type III radio bursts observed by the
Wind/WAVES spacecraft. We confirm the source region of these bursts using the
Potential Field Source Surface technique. 10 out of 20 events showed that the
jets originated in a region of flux cancellation and 6 jets in a region of flux
emergence. 4 events showed flux emergence and then cancellation during the jet
evolution. DEM analyses showed that for most of the spires of the jets, the DEM
peaked at around log T [K] = 6.2/6.3. In addition, we derived an emission
measure and a lower limit of electron density at the location of the spire and
the footpoint. These results are in agreement with those obtained earlier by
studying individual active region jets. The observation of flux cancellation,
the association with HXR emission and emission of nonthermal type III radio
bursts, suggest that the initiation and therefore, heating is taking place at
the base of the jet. This is also supported by the high temperature plasma
revealed by the DEM analysis in the jet footpoint. Our results provide
substantial constraints for theoretical modeling of the jets and their
thermodynamic nature.
