HOP 0208

HINODE Operation Plan (HOP)

accepted on

16-feb-12

HOP No.

HOP title

HOP 0208

Energy exchange between the photosphere and corona

plan term

ToO
2012/02/18-2012/02/22

contact person in HINODE team

name :

Culhane

e-mail :

jlc[at]mssl.ucl.ac.uk

abstract of observational proposal

The purpose of this proposal is to track an active region for 5 days in order to measure the changes in the magnetic field through e.g. the magnetic energy dissipation rate, and then correlate this to the response in the corona through measuring the 'turbulence' in the corona through coronal line width measurements from EIS. A preliminary paper on this work has just been submitted by Harra and bramenko.

other participating instruments

The New Solar Telescope (NST) of Big Bear Solar Observatory will also follow the target when the weather allows. The NST's observing time window is 17 ‐ 21 UT. The NST will provide us infrared magnetograms, which probe the magnetic field at the deeper level (tau(500)=‐50 km) in the photosphere than Hinode and HMI magnetograms do. NST/TiO images of granulation of 10s cadence and 0.1 arcsec resolution will provide us information on the photospheric dynamics. Simultaneous monitoring of the target with the NST H‐alpha imager will bring information on the photospherechromosphere connection.

remarks

We wish to track an active region for 5 days continuously ‐ with day 3 being at central meridian. It is preferable if the active region is flaring but not necessary. The focus is not based around the NST observing time, but should be run as much of the 24 hours each day as possible. We need continuous observations for this work.