J/A+A/422/337 Solar EUV Post-Eruptive Arcades (Tripathi+, 2004)
The Basic Characteristics of EUV Post-Eruptive Arcades and Their Role
as Tracers of Coronal Mass Ejection Source Regions.
Tripathi D., Bothmer V., Cremades H.
<Astron. Astrophys. 422, 337 (2004)>
=2004A&A...422..337T 2004A&A...422..337T
ADC_Keywords: Sun ; Photometry, ultraviolet
Mission_Name: SOHO
Keywords: Sun: corona - Sun: coronal mass ejections (CMEs) - Sun: flares -
Sun: filaments - Sun: photosphere - Sun: solar-terrestrial relations
Abstract:
The Extreme ultraviolet Imaging Telescope (EIT) on board the Solar and
Heliospheric Observatory (SOHO) spacecraft provides unique
observations of dynamic processes in the low corona. The EIT 195Å
data taken from 1997 to the end of 2002 were investigated to study the
basic physical properties of post-eruptive arcades (PEAs) and their
relationship with coronal mass ejections (CMEs) as detected by
SOHO/LASCO (Large Angle Spectrometric Coronagraph). Over the
investigated time period, 236 PEA events have been identified in
total. For each PEA, its EUV lifetime as derived from the emission
time at 195Å, its heliographic position and length, and its
corresponding photospheric source region inferred from SOHO/MDI
(Michelson Doppler Imager) data has been studied, as well as the
variation of these parameters over the investigated phase of solar
cycle 23.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 63 236 Post-Eruptive Arcades (PEA) parameters
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 10 A10 "DD/MM/YYYY" Date Observation date
12- 13 I2 h Tmax.h Time of maximum evolution at 195Å
14 A1 --- --- [:]
15- 16 I2 min Tmax.m Time of maximum evolution at 195Å
18- 23 F6.2 deg Hlat1 Heliographic latitude of the first endpoint
of the PEA axis
25- 30 F6.2 deg Hlon1 [-90/90] Heliographic longitude of the first
endpoint of the PEA axis
32- 37 F6.2 deg Hlat2 Heliographic latitude of the second endpoint
of the PEA axis
39- 44 F6.2 deg Hlon2 [-92/90] Heliographic longitude of the
second endpoint of the PEA axis
46- 47 I2 --- L Heliographic length
49 A1 --- Pol [np] Negative (n) or positive (p)
magnetic polarity to the West of the
polarity inversion line (NL)
51- 52 I2 h Life.h ? Lifetime
53 A1 --- --- [:]
54- 55 I2 min Life.m ? Lifetime
57- 58 I2 h TM.h ? Time of first observation of the
associated SOHO/LASCO C2 CME
59 A1 --- --- [:]
60- 61 I2 min TM.m ? Time of first observation of the
associated SOHO/LASCO C2 CME
62- 63 A2 --- n_TM.m Cases without availability of LASCO/C2
NA: not applicable
DF: diseppearing filament
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Acknowledgements: Durgesh Tripathi
(End) Patricia Bauer [CDS] 22-Apr-2004