A synoptic view of solar transient evolution in the inner heliosphere using the Heliospheric Imagers on STEREO

Details A synoptic view of solar transient evolution in the inner heliosphere using the Heliospheric Imagers on STEREO A synoptic view of solar transient evolution in the inner heliosphere using the Heliospheric Imagers on STEREO

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009georl..3602102d&link_type=abstract

Geophysical Research Letters, Volume 36, Issue 2, CiteID L02102

Astronomy and Astrophysics

Astrophysics

48

Solar Physics, Astrophysics, And Astronomy: Instruments And Techniques, Solar Physics, Astrophysics, And Astronomy: Coronal Mass Ejections (2101), Interplanetary Physics: Coronal Mass Ejections (7513), Solar Physics, Astrophysics, And Astronomy: Prominence Eruptions

Scientific paper

By exploiting data from the STEREO/heliospheric imagers (HI) we extend a well-established technique developed for coronal analysis by producing time-elongation plots that reveal the nature of solar transient activity over a far more extensive region of the heliosphere than previously possible from coronagraph images. Despite the simplicity of these plots, their power in demonstrating how the plethora of ascending coronal features observed near the Sun evolve as they move antisunward is obvious. The time-elongation profile of a transient tracked by HI can, moreover, be used to establish its angle out of the plane-of-the-sky an illustration of such analysis reveals coronal mass ejection material that can be clearly observed propagating out to distances beyond 1AU. This work confirms the value of the time-elongation format in identifying/characterising transient activity in the inner heliosphere, whilst also validating the ability of HI to continuously monitor solar ejecta out to and beyond 1AU.

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