caa a22 4500 445345861 CHVBK 20180317142828.0 cr unu---uuuuu 170323e20110501xx s 000 0 eng 10.1007/s11207-011-9721-x doi (NATIONALLICENCE)springer-10.1007/s11207-011-9721-x Crossing Filaments [Elektronische Daten] [Boris Filippov, A. Srivastava] Solar filaments show the position of large-scale polarity-inversion lines and are used for the reconstruction of large-scale solar magnetic field structure on the basis of Hα synoptic charts for the periods that magnetographic measurements are not available. Sometimes crossing filaments are seen in Hα filtergrams. We analyze daily Hα filtergrams from the archive of Big Bear Solar Observatory for the period of 1999 - 2003 to find crossing and interacting filaments. Anumber of examples are presented and filament patterns are compared with photospheric magnetic field distributions. We have found that all crossing filaments reveal quadrupolar magnetic configurations of the photospheric field and presume the presence of null points in the corona. Springer Science+Business Media B.V., 2011 Filaments nationallicence Magnetic fields nationallicence Prominences nationallicence Reconnection nationallicence Filippov Boris Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation, Russian Academy of Sciences, 142190, Troitsk, Moscow Region, Russia aut Srivastava A. Aryabhatta Research Institute of Observational Sciences (ARIES), Manora Peak, 263 129, Nainital, Uttarakhand, India aut Solar Physics Springer Netherlands 270/1(2011-05-01), 151-164 0038-0938 270:1<151 2011 270 11207 https://doi.org/10.1007/s11207-011-9721-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11207-011-9721-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Filippov Boris Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation, Russian Academy of Sciences, 142190, Troitsk, Moscow Region, Russia aut NATIONALLICENCE 700 1- Srivastava A. Aryabhatta Research Institute of Observational Sciences (ARIES), Manora Peak, 263 129, Nainital, Uttarakhand, India aut NATIONALLICENCE 773 0- Solar Physics Springer Netherlands 270/1(2011-05-01), 151-164 0038-0938 270:1<151 2011 270 11207 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer