EIS SOLAR HOW TO
EIS SOLAR SOFTWARE

Hinode / EIS Solar 24, Dec 2008 Dr Peter Young, NRL/GMU Most useful EIS density diagnostics Fe XII & Fe XIIIFe XII & Fe XIII column depths and filling factors Mg VII a cool loop diagnosticMg VII a cool loop diagnostic.Hinode / EIS Solar 24, Dec 2008 Dr Peter Young, NRL/GMU Density diagnostics Certain emission lines from particular ions have ratios that are sensitive to the plasma densitењњertain emission lines from particular ions have ratios that are sensitive to the plasma density EIS is the first solar UV instrument to routinely allow high precision density measurementsEIS is the first solar UV instrument to routinely allow high precision density measurements high effective area access to best coronal density diagnostics.

Hinode / EIS Solar 24, Dec 2008 Dr Peter Young, NRL/GMU Active region seen in 11 iron ions.Hinode / EIS Solar 24, Dec 2008 Dr Peter Young, NRL/GMU Fe VII a new ion for EIS A number of Fe VII lines are seen in EIS spectraA number of Fe VII lines are seen in EIS spectra Atomic data have only become available recently (Witthoeft & Badnell 2008)Atomic data have only become available recently (Witthoeft & Badnell 2008) These allow Fe VII to be used in DEM analysisThese allow Fe VII to be used in DEM analysis.Hinode / EIS Solar 24, Dec 2008 Dr Peter Young, NRL/GMU New Fe IX lines 171 is not scientifically useful for EIS171 is not scientifically useful for EIS New lines have recently been identified (Young, arXiv:0810.5028)New lines have recently been identified (Young, arXiv:0810.5028) Most useful line is at 197.86 (unblended)Most useful line is at 197.86 (unblended) Young, arXiv:0810.5028.Hinode / EIS Solar 24, Dec 2008 Dr Peter Young, NRL/GMU Temperature diagnostics Temperature is diagnosed through observing different ionization stages on an elementTemperature is diagnosed through observing different ionization stages on an element Most useful element is ironMost useful element is iron For coronal loop work, we have complete range from stage VII (log T=5.6) to stage XVII (log T=6.5)For coronal loop work, we have complete range from stage VII (log T=5.6) to stage XVII (log T=6.5).Hinode / EIS Solar 24, Dec 2008 Dr Peter Young, NRL/GMU Loops.Hinode / EIS Solar 24, Dec 2008 Dr Peter Young, NRL/GMU Loops Loops are seen in velocity and line width maps, but often appear to be different to intensity loopsLoops are seen in velocity and line width maps, but often appear to be different to intensity loops see Doschek et al.Hinode / EIS Solar 24, Dec 2008 Dr Peter Young, NRL/GMU Active region maps Most striking feature of AR velocity and line width maps are footpoint regions showing blueshifts and large line widthsMost striking feature of AR velocity and line width maps are footpoint regions showing blueshifts and large line widths see Del Zanna (2008, A&A), Hara et al.

EIS SOLAR SOFTWARE

Hinode / EIS Solar 24, Dec 2008 Dr Peter Young, NRL/GMU Line width eis_auto_fit produces line width array, but includes instrumental widtheis_auto_fit produces line width array, but includes instrumental width Instrumental width:Instrumental width: around 55 m varies along slit by 2-3 m No software exists for correcting instrumental widthNo software exists for correcting instrumental width.

EIS SOLAR HOW TO

Hinode / EIS Solar 24, Dec 2008 Dr Peter Young, NRL/GMU Velocity eis_auto_fit produces a velocity array, however needs to be corrected for instrumental effects:eis_auto_fit produces a velocity array, however needs to be corrected for instrumental effects: tilt of EIS slit relative to CCD orbital motion of lines on detector See tutorial for how to do this.See tutorial for how to do this.

Hinode / EIS Solar 24, Dec 2008 Dr Peter Young, NRL/GMU Gaussian fitting Single Gaussians can be fit to EIS emission lines using routine eis_auto_fit.proSingle Gaussians can be fit to EIS emission lines using routine eis_auto_fit.pro Check out tutorial at:Check out tutorial at: A multiple-Gaussian fitting is also available: eis_auto_fit_gen.proA multiple-Gaussian fitting is also available: eis_auto_fit_gen.pro.

Hinode / EIS Solar 24, Dec 2008 Dr Peter Young, NRL/GMU Outline VelocityVelocity Line widthsLine widths TemperatureTemperature DensityDensity Fe XII photometryFe XII photometry.

Hinode / EIS Solar 24, Dec 2008 Dr Peter Young, NRL/GMU Active Region Diagnostics with EIS Dr Peter Young Dr Peter Young Naval Research Laboratory George Mason University.

Eis solar