caa a22 4500 445346426 CHVBK 20180317142830.0 cr unu---uuuuu 170323e20110901xx s 000 0 eng 10.1007/s11207-011-9829-z doi (NATIONALLICENCE)springer-10.1007/s11207-011-9829-z Multiwavelength Observations of a Failed Flux Rope in the Eruption and Associated M-Class Flare from NOAA AR 11045 [Elektronische Daten] [Pankaj Kumar, Ablishek Srivastava, B. Filippov, R. Erdélyi, Wahab Uddin] We present the multiwavelength observations of a flux rope that was trying to erupt from NOAA AR 11045 and the associated M-class solar flare on 12 February 2010 using space-based and ground-based observations from TRACE, STEREO, SOHO/MDI, Hinode/XRT, and BBSO. While the flux rope was rising from the active region, an M1.1/2F class flare was triggered near one of its footpoints. We suggest that the flare triggering was due to the reconnection of a rising flux rope with the surrounding low-lying magnetic loops. The flux rope reached a projected height of ≈0.15R ⊙ with a speed of ≈90 km s−1 while the soft X-ray flux enhanced gradually during its rise. The flux rope was suppressed by an overlying field, and the filled plasma moved towards the negative polarity field to the west of its activation site. We found the first observational evidence of the initial suppression of a flux rope due to a remnant filament visible both at chromospheric and coronal temperatures that evolved a couple of days earlier at the same location in the active region. SOHO/MDI magnetograms show the emergence of a bipole ≈12 h prior to the flare initiation. The emerged negative polarity moved towards the flux rope activation site, and flare triggering near the photospheric polarity inversion line (PIL) took place. The motion of the negative polarity region towards the PIL helped in the build-up of magnetic energy at the flare and flux rope activation site. This study provides unique observational evidence of a rising flux rope that failed to erupt due to a remnant filament and overlying magnetic field, as well as associated triggering of an M-class flare. Springer Science+Business Media B.V., 2011 Flux rope nationallicence Magnetic field nationallicence Magnetic reconnection nationallicence Solar flare - coronal loops nationallicence Kumar Pankaj Aryabhatta Research Institute of Observational Sciences (ARIES), Manora Peak, 263129, Nainital, India aut Srivastava Ablishek Aryabhatta Research Institute of Observational Sciences (ARIES), Manora Peak, 263129, Nainital, India aut Filippov B. Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation, Russian Academy of Sciences, 142190, Troitsk, Moscow Region, Russia aut Erdélyi R. Solar Physics and Space Plasma Research Centre (SP2RC), School of Mathematics and Statistics, The University of Sheffield, Sheffield, UK aut Uddin Wahab Aryabhatta Research Institute of Observational Sciences (ARIES), Manora Peak, 263129, Nainital, India aut Solar Physics Springer Netherlands 272/2(2011-09-01), 301-317 0038-0938 272:2<301 2011 272 11207 https://doi.org/10.1007/s11207-011-9829-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11207-011-9829-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kumar Pankaj Aryabhatta Research Institute of Observational Sciences (ARIES), Manora Peak, 263129, Nainital, India aut NATIONALLICENCE 700 1- Srivastava Ablishek Aryabhatta Research Institute of Observational Sciences (ARIES), Manora Peak, 263129, Nainital, India aut NATIONALLICENCE 700 1- Filippov B. Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation, Russian Academy of Sciences, 142190, Troitsk, Moscow Region, Russia aut NATIONALLICENCE 700 1- Erdélyi R. Solar Physics and Space Plasma Research Centre (SP2RC), School of Mathematics and Statistics, The University of Sheffield, Sheffield, UK aut NATIONALLICENCE 700 1- Uddin Wahab Aryabhatta Research Institute of Observational Sciences (ARIES), Manora Peak, 263129, Nainital, India aut NATIONALLICENCE 773 0- Solar Physics Springer Netherlands 272/2(2011-09-01), 301-317 0038-0938 272:2<301 2011 272 11207 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer