caa a22 4500 445815701 CHVBK 20180317145227.0 cr unu---uuuuu 170323e20111001xx s 000 0 eng 10.1007/s11214-011-9758-z doi (NATIONALLICENCE)springer-10.1007/s11214-011-9758-z Observed Aspects of Reconnection in Solar Eruptions [Elektronische Daten] [Ronald Moore, Alphonse Sterling, G. Gary, Jonathan Cirtain, David Falconer] The observed magnetic field configuration and signatures of reconnection in the large solar magnetic eruptions that make major flares and coronal mass ejections and in the much smaller magnetic eruptions that make X-ray jets are illustrated with cartoons and representative observed eruptions. The main reconnection signatures considered are the imaged bright emission from the heated plasma on reconnected field lines. In any of these eruptions, large or small, the magnetic field that drives the eruption and/or that drives the buildup to the eruption is initially a closed bipolar arcade. From the form and configuration of the magnetic field in and around the driving arcade and from the development of the reconnection signatures in coordination with the eruption, we infer that (1)at the onset of reconnection the reconnection current sheet is small compared to the driving arcade, and (2)the current sheet can grow to the size of the driving arcade only after reconnection starts and the unleashed erupting field dynamically forces the current sheet to grow much larger, building it up faster than the reconnection can tear it down. We conjecture that the fundamental reason the quasi-static pre-eruption field is prohibited from having a large current sheet is that the magnetic pressure is much greater than the plasma pressure in the chromosphere and low corona in eruptive solar magnetic fields. The Author(s), 2011 Sun: flares nationallicence Sun: coronal mass ejections (CMEs) nationallicence Sun: magnetic reconnection nationallicence Sun: magnetic topology nationallicence Moore Ronald NASA Marshall Space Flight Center, Huntsville, AL, USA aut Sterling Alphonse NASA Marshall Space Flight Center, Huntsville, AL, USA aut Gary G. NASA Marshall Space Flight Center, Huntsville, AL, USA aut Cirtain Jonathan NASA Marshall Space Flight Center, Huntsville, AL, USA aut Falconer David NASA Marshall Space Flight Center, Huntsville, AL, USA aut Space Science Reviews Springer Netherlands 160/1-4(2011-10-01), 73-94 0038-6308 160:1-4<73 2011 160 11214 https://doi.org/10.1007/s11214-011-9758-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11214-011-9758-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Moore Ronald NASA Marshall Space Flight Center, Huntsville, AL, USA aut NATIONALLICENCE 700 1- Sterling Alphonse NASA Marshall Space Flight Center, Huntsville, AL, USA aut NATIONALLICENCE 700 1- Gary G. NASA Marshall Space Flight Center, Huntsville, AL, USA aut NATIONALLICENCE 700 1- Cirtain Jonathan NASA Marshall Space Flight Center, Huntsville, AL, USA aut NATIONALLICENCE 700 1- Falconer David NASA Marshall Space Flight Center, Huntsville, AL, USA aut NATIONALLICENCE 773 0- Space Science Reviews Springer Netherlands 160/1-4(2011-10-01), 73-94 0038-6308 160:1-4<73 2011 160 11214 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer