Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsh23c1966h&link_type=abstract
American Geophysical Union, Fall Meeting 2011, abstract #SH23C-1966
Astronomy and Astrophysics
Astrophysics
[2101] Interplanetary Physics / Coronal Mass Ejections, [2164] Interplanetary Physics / Solar Wind Plasma, [7513] Solar Physics, Astrophysics, And Astronomy / Coronal Mass Ejections, [7974] Space Weather / Solar Effects
Scientific paper
We present scientific results using a new processing pipeline from the SECCHI instrument suite on STEREO-A. This pipeline reduces stellar and F coronal noise to an unprecedented level to where very small and faint solar wind transients can be observed and tracked. This allows the accomplishment of new revelations about small-scale transients and about the anatomy of coronal mass ejections (CMEs) en-route through the inner heliosphere. Our results are from the time period corresponding to the lowest part of the deep minimum of Solar Cycle 23-24 (December 2009 - January 2009) and find a dynamic solar wind even when at its quietest. We identify solar wind puffs and blobs, likely disconnection events, and a number of CMEs, and we track them through the SECCHI suite to distances out to and beyond 1 AU. We are therefore able to unambiguously identify each of their signatures upon their arrival at in-situ spacecraft. For the CMEs we track magnetic flux ropes (called magnetic clouds) back to their coronagraph origins and identify them as the cavity component of the so-called classic three-part CME structure. Finally we track the evolution of the structure of the flux ropes through the heliosphere, and find significant distortion.
DeForest Craig Edward
Howard Tim A.
Reinard Alysha
Tappin James S.
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