caa a22 4500 445347244 CHVBK 20180317142832.0 cr unu---uuuuu 170323e20111101xx s 000 0 eng 10.1007/s11207-011-9760-3 doi (NATIONALLICENCE)springer-10.1007/s11207-011-9760-3 Location of Decimetric Pulsations in Solar Flares [Elektronische Daten] [Arnold Benz, Marina Battaglia, Nicole Vilmer] This work investigates the spatial relation between coronal X-ray sources and coherent radio emissions, both generally thought to be signatures of particle acceleration. Two limb events were selected during which the radio emission was well correlated in time with hard X-rays. The radio emissions were of the type of decimetric pulsations as determined from the spectrogram observed by Phoenix-2 of ETH Zurich. The radio positions were measured from observations with the Nançay Radioheliograph between 236 and 432 MHz and compared to the position of the coronal X-ray source imaged with RHESSI. The radio pulsations originated at least 30 - 240Mm above the coronal hard X-ray source. The altitude of the radio emission increases generally with lower frequency. The average positions at different frequencies are on a line pointing approximately to the coronal hard X-ray source. Thus, the pulsations cannot be caused by electrons trapped in the flare loops, but are consistent with emission from a current sheet above the coronal source. Springer Science+Business Media B.V., 2011 Benz Arnold Institute of Astronomy, ETH Zurich, 8093, Zürich, Switzerland aut Battaglia Marina Institute of Astronomy, ETH Zurich, 8093, Zürich, Switzerland aut Vilmer Nicole LESIA, Observatoire de Paris, CNRS, UPMC, Université Paris-Diderot, 5 place Jules Janssen, 92195, Meudon Cedex, France aut Solar Physics Springer Netherlands 273/2(2011-11-01), 363-375 0038-0938 273:2<363 2011 273 11207 https://doi.org/10.1007/s11207-011-9760-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11207-011-9760-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Benz Arnold Institute of Astronomy, ETH Zurich, 8093, Zürich, Switzerland aut NATIONALLICENCE 700 1- Battaglia Marina Institute of Astronomy, ETH Zurich, 8093, Zürich, Switzerland aut NATIONALLICENCE 700 1- Vilmer Nicole LESIA, Observatoire de Paris, CNRS, UPMC, Université Paris-Diderot, 5 place Jules Janssen, 92195, Meudon Cedex, France aut NATIONALLICENCE 773 0- Solar Physics Springer Netherlands 273/2(2011-11-01), 363-375 0038-0938 273:2<363 2011 273 11207 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer