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Hinode Coordinated Observations: Plasma Composition

Photospheric composition ~ 1 in coronal hole (CH) -> fast windCoronal composition ~1.5-3 in active region (AR) -> slow wind

XRT

EIS Composition Map

Linking solar wind with source regions using plasma composition.

Baker, Brooks, et al. 2013, ApJ 778, 69 Contributed by the Hinode/EIS team through the University College London / Mullard Space Sciences Laboratory

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Hinode Coordinated Observations: Plasma Composition

Composition of sigmoid channel in erupting active region – topology clues?

EIS Composition Map

Inverse S-channel of photospheric material within the active region where significant flux cancellation takes place. A sigmoid/flux rope forms and erupts as a CME (Baker et al 2012).

Scenario for build up of a flux rope where the bottom of the flux rope is located low down and has a Bald Patch (BP) topology (Green et al 2011 and Green & Kliem 2009).

->Space weather implications - allows identification of early build up of a flux rope and potential CME.

Baker, Brooks, et al. 2013, ApJ 778, 69

Sigmoid - XRT

Contributed by the Hinode/EIS team through the University College London / Mullard Space Sciences Laboratory

Sigmoid - EIS

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Hinode Coordinated Observations: Plasma Composition

Composition evolution in a decaying active region.

From 4th to 6th January 2012, plasma composition evolves from coronal to photospheric in AR 11389 especially around supergranular cell boundary as repeated flux emergence supplies photospheric plasma to coronal loops via magnetic reconnection.

Baker, Brooks, et al. 2014, in prep.

Contributed by the Hinode/EIS team through the University College London / Mullard Space Sciences Laboratory