2016
DOI: 10.3847/0004-637x/821/2/95
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COMPARISON BETWEEN 2D AND 3D PARAMETERS OF 306 FRONT-SIDE HALO CMEs FROM 2009 TO 2013

Abstract: We investigate 306 LASCO front-side halo (partial and full) CMEs from 2009 to 2013, which are well-observed by both the Solar and Heliospheric Observatory (SOHO) and the Solar TErrestrial RElations Observatory (STEREO). These CMEs have two-dimensional (2D) parameters, such as speed, angular width, and propagation direction, from a single spacecraft (SOHO), as well as three-dimensional (3D) parameters from a multi-spacecraft (STEREO). These 2D CME parameters, which are based on plane-of-sky observations, are ta… Show more

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Cited by 27 publications
(29 citation statements)
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“…Gopalswamy et al () could show from observations that vr12vexp, giving at last the very convenient conclusion that v r ≈ v disk for very fast ( v r ≈1,000 km/s) and wide ( ω ≈45°) CMEs. This relationship was also found in a more recent and larger statistical study (Jang et al, ). Thus, it will suffice to estimate v disk , which may be done in the frameseries mode in StereoCAT (LaSota, ).…”
Section: Methodssupporting
confidence: 83%
“…Gopalswamy et al () could show from observations that vr12vexp, giving at last the very convenient conclusion that v r ≈ v disk for very fast ( v r ≈1,000 km/s) and wide ( ω ≈45°) CMEs. This relationship was also found in a more recent and larger statistical study (Jang et al, ). Thus, it will suffice to estimate v disk , which may be done in the frameseries mode in StereoCAT (LaSota, ).…”
Section: Methodssupporting
confidence: 83%
“…Although for Sample 3 the projected 2D CME launch speed (v 0 ) were used, compared to the Sample 1 where 3D speeds were employed and the differences in those speeds can be up to 20% (e.g. Jang et al 2016), we note that this doesn't introduce a big difference in samples since the other uncertainties related to v 0 may be the far larger (e.g. estimation of v 0 very close to the Sun).…”
Section: Dbemv3 Evaluation With Richardson and Cane (2010) Icme Event...mentioning
confidence: 99%
“…Observations from large‐angle viewpoints minimize the projection effects. If observations from multiple longitudinally separated points are available, they allow getting more reliable parameters (e.g., Jang et al, ; H. Lee et al, ) through, for example, three‐dimensional (3‐D) forward modeling (Thernisien et al, ) or triangulation (e.g., Mierla et al, ; Rouillard et al, ). For example, the graduated cylindrical shell (GCS) model describes the CME as a donut‐shaped section attached to two conical legs (croissant‐shaped; J. Chen et al, ; Thernisien et al, ), see example of the fitting in Figure .…”
Section: Intrinsic Parameters Of Cmesmentioning
confidence: 99%