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12. Large flares can release 1025 J of energy. If the magnetic field of an active region is 0.01 T, estimate the volume of the plasma required to undergo reconnection to generate the flare. If the density in the active region is 10-11 kg m-³, find out how long time it takes in the Sweet- Parker model to release this amount of energy, if the reconnecting current sheet has lateral dimensions of 10³× 10³ km². You may take the temperature to be equal to 10 MK and the magnetic diffusivity to be n = 10ºx T(K)-3/2 m² s-¹. In the cartoon d is the distance plasma has to travel to the reconnection region. Solar surface

12. Large flares can release 1025 J of energy. If the magnetic field of an active region is 0.01 T, estimate the volume of the plasma required to undergo reconnection to generate the flare. If the density in the active region is 10-11 kg m-³, find out how long time it takes in the Sweet- Parker model to release this amount of energy, if the reconnecting current sheet has lateral dimensions of 10³× 10³ km². You may take the temperature to be equal to 10 MK and the magnetic diffusivity to be n = 10ºx T(K)-3/2 m² s-¹. In the cartoon d is the distance plasma has to travel to the reconnection region. Solar surface

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12. Large flares can release 1025 J of energy. If the magnetic field of an active region is 0.01 T, estimate the volume of the plasma required to undergo reconnection to generate the flare. If the density in the active region is 10-11 kg m-³, find out how long time it takes in the Sweet- Parker model to release this amount of energy, if the reconnecting current sheet has lateral dimensions of 10× 105 km². You may take the temperature to be equal to 10 MK and the magnetic diffusivity to be 7 = 10°x T(K)-3/2 m² s-1. In the cartoon d is the distance plasma has to travel to the reconnection region. Sotar surface
Transcribed Image Text:12. Large flares can release 1025 J of energy. If the magnetic field of an active region is 0.01 T, estimate the volume of the plasma required to undergo reconnection to generate the flare. If the density in the active region is 10-11 kg m-³, find out how long time it takes in the Sweet- Parker model to release this amount of energy, if the reconnecting current sheet has lateral dimensions of 10× 105 km². You may take the temperature to be equal to 10 MK and the magnetic diffusivity to be 7 = 10°x T(K)-3/2 m² s-1. In the cartoon d is the distance plasma has to travel to the reconnection region. Sotar surface
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