Hinode & SDO Sigmoid Catalog

Hinode at MSFC

SDO at GSFC

XRT at SAO

AIA at SAO

This catalog contains various information on sigmoidal active regions that have been observed by Hinode and SDO. Click 'Display Key' for an explanation of each column. Images and additional information are available by clicking on the icons next to each entry.

Column Headers:

ID: An Identifying number as an easy reference to a specific region.
Rating: An arbitrary classification to determine which events warrant further case studies. A value of 4 is highest.
NOAA #: The NOAA classification number given to identified Active Regions.
T-Best: The time in UT when the sigmoidal shape is most prominent.
X & Y: The center location of the sigmoid in arcsec from disk center.
Size: Measure of the long axis of the sigmoid in arcsec.
Aspect Ratio: Ratio of the long axis to short axis.
Orientation: How the loops look. S = S-Shaped, I = Inverted S-Shaped and H = Horizontal.
Hemisphere: Which hemisphere the sigmoid is located in. N = North and S = South.
EUV Filament: Is there an EUV filament present at any time during the lifetime of the sigmoid? Y = Yes, N = No, and ? = Undetermined
Ha Filament: Is there an Ha filament present at any time during the lifetime of the sigmoid? Y = Yes, N = No, and ? = Undetermined
Sunspots: How many sunspots are located in this region.
Flux Emerge: Is Flux Emergence observed in the region at any point over its lifetime? N = No and Y = Yes. Information not populated yet.
Flux Cancel: Is Flux Cancelation observed in the region at any point over its lifetime? N = No and Y = Yes. Information not populated yet.
Peak Flux: The peak of the flux measured in Mx. Information not populated yet.
Flare: How many of each GOES class flares there were during the lifetime of the sigmoid.
CME: Links to automated LASCO CME detections by CACTus during the lifetime of the sigmoid. Populated based on overlap with eruption times, so each CME not necessarily related to eruption.
Filament Eruption: How may filament eruptions emanated from this region over its lifetime.
Transient Coronal Hole: If there was a Transient Coronal Hole observed during sigmoid lifetime. Y = Yes and N = No, and M = Maybe.
Flare Ribbons: Were there Flare Ribbons observed after each flare? Y = Yes and N = No. Information not populated yet.
Post-Flare Loops: Were there Post-Flare Loops observed after each flare? Y = Yes and N = No. Information not populated yet.
Nearby Coronal Hole: If there was a Coronal Hole observed next to the region. Y = Yes, N = No, and M = Maybe.
Nearby AR: If there was a Active Region observed near the region. Given as the NOAA AR number, or a simple Y = Yes if that number is unknown.

Additional Features:

Column sorting: Each column may be sorted on by clicking headers. Combination-sort by shift-clicking multiple column headers.
Drop down field: icons activate a drop-down field containing additional comments.

Clickable cutout images in either XRT or AIA 335 passbands as well as images taken from Solar Monitor.
Cutout movies can be downloaded through links under Movie header.

Search bar in upper-right can filter table based on keywords in the comments (e.g. enter "kink" to isolate events where evidence for kink instability was noticed).

	ID	Rating	NOAA #	T-Best (UT)	X (")	Y (")	Size (")	Aspect Ratio	Orientation	Hemisphere	EUV Filament	Hα Filament	Sunspots	Flux Emerge	Flux Cancel	Peak Flux	Flare	CME	Filament Eruption	Transient Coronal Hole	Flare Ribbons	Post- Flare Loops	Nearby Coronal Hole	Nearby AR	Row Details

Please see Savcheva et al. (2014) for additional information and results from this catalog.

First Name *
Last Name *
Email Address *
Telephone Number
Comments *