Solar Physics General Session
AIA-EIS-XRT observation of a Recurring Active Region Jet
Sargam M. Mulay
Giulio Del Zanna (DAMTP, University of Cambridge), Helen Mason (DAMTP, University of Cambridge)
DAMTP, University of Cambridge
We present a study of a recurring jet observed on October 31, 2011 by AIA/SDO, Hinode/XRT and EIS. We discuss the physical parameters of the jet such as density, temperature, velocity and filling factor obtained using imaging and spectroscopic observations. The jet-spire and the jet-footpoint were observed over the range of
temperatures from log T [K] = 4.7 to 6.4 in the EIS observation. The plane-of-sky velocity of the jet is found to be 524 km/s. We calculated an electron number density using Fe XII (186/195) line ratio density diagnostics in the region of the spire (7.6×10^10 cm^−3) and in the region of the footpoint (1.1×10^11 cm^−3). A
differential emission measure analysis was performed at both regions using the EIS observations and also by combining AIA and XRT observations. The plasma along the line-of-sight in both the regions was found to be multi-thermal (temperature between log T [K] = 6.2 and 6.3). The resulting EIS DEM values are in good agreement with those obtained from AIA-XRT. The DEM curves were used to create
synthetic spectra with the CHIANTI atomic database. The contribution of spectral lines to each of the EIS and AIA channels was determined from the synthetic spectra. There is no indication of high-temperature line such as emission from Fe XVII line (254.87) (log T [K] = 6.9) seen in the observed or synthetic spectra.


13:30 - 15:00
EX - C33 (150)