English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Using combined STEREO-A and STEREO-B EUVI, COR1 and COR2 data, we derivedeprojected CME kinematics and CME `true' mass evolutions for a sample of 25events that occurred during December 2007 to April 2011. We develop a fittingfunction to describe the CME mass evolution with height. The function considersboth the effect of the coronagraph occulter, at the beginning of the CMEevolution, and an actual mass increase. The latter becomes important at about10Rs to 15Rs and is assumed to mostly contribute up to 20Rs. The mass increaseranges from 2% to 6% per Rs and, is positively correlated to the total CMEmass. Due to the combination of COR1 and COR2 mass measurements, we are able toestimate the `true' mass value for very low coronal heights (< 3Rs). Based onthe deprojected CME kinematics and initial ejected masses, we derive thekinetic energies and propelling forces acting on the CME in the low corona (<3Rs). The derived CME kinetic energies range between 1-66*10^23 J, and theforces range between 2.2-510*10^14 N.

The height evolution of the `true' CME mass derived from STEREO COR1 and COR2 observations