On the nature of coronal EIT waves

I. Ballai*, R. Erdélyi, B. Pintér

*Awdur cyfatebol y gwaith hwn

Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid


Large-scale eruption events in the solar atmosphere can generate global waves, i.e., waves that propagate over distances comparable to the solar radius. In the low solar corona, global waves observed by SOHO EIT, generated by coronal mass ejections or flares, are usually referred to as "EIT waves." The nature of these global waves is the subject of strong debate, and opinions are divided between different interpretations (e.g., fast magneto-hydrodynamic waves, shock waves, nonwave feature, etc.). In the present Letter, we studied TRACE EUY data to show that these global coronal disturbances are indeed waves with a well-defined period. Supposing that the EIT waves transfer all their energy to interacting loops, we also estimate the minimum energy threshold carried by EIT waves.

Iaith wreiddiolSaesneg
Tudalennau (o-i)L145-L148
CyfnodolynAstrophysical Journal
Rhif cyhoeddi2 II
Dynodwyr Gwrthrych Digidol (DOIs)
StatwsCyhoeddwyd - 10 Tach 2005

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