Abstract
High resolution on- and off-band Hα filtergrams of disk solar surges obtained with the Vacuum Tower Telescope of the Sacramento Peak Observatory have been compared to magnetic data.
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(1)
Surges constitute clusters of very fine dark (sometimes bright) filaments where each thread connects to an Ellerman bomb brightening. If the magnetic map reveals the existence of a satellite polarity as defined by Rust (1968), the bomb(s) lies over it.
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(2)
Although a large fraction of surges is not associated with clearly detectable satellite polarities, events are strongly favored in regions of evolving magnetic features, characterized by dimensions of about 10 000 km and significant flux change over a period of less than a day. A flux change rate of 3 × 1015 Mx s−1 has been measured along at least three homologous bomb-surge events in a satellite of region MW 18594. Surges appear to be related to rising flux of one polarity into a region of stronger opposite flux.
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(3)
The trajectories of surges are matched by magnetic lines of force computed in the current-free approximation.
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References
Beckers, J. M. and Schröter, E. H.: 1969, Solar Phys. 10, 384.
Bruzek, A.: 1969, in COSPAR Symposium on Solar Flares and Space Research, North-Holland Publishing Co., p.61.
Dunn, R. B.: 1964, Appl. Opt. 3, 1353.
Dunn, R. B.: 1969, Sky Telesc. 38, 368.
Dunn, R. B.: 1971a, in H. Seddon and M. J. Smyth (eds.) ‘Automation in Optical Astrophysics’, IAU Colloq. 11, 37.
Dunn, R. B.: 1971b, in The Menzel Symposium on Solar Physics, Atomic Spectra and Gaseous Nebulae, National Bureau of Standards (Washington), p.71.
Dunn, R. B. 1971c, in R. Howard (ed.), ‘Solar Magnetic Fields’, IAU Symp. 43, 65.
Ellerman, F.: 1917, Astrophys. J. 47, 298.
Ellison, M. A.: 1949, Monthly Notices Roy. Astron. Soc. 109, 3.
Engvold, O. and Maltby, P.: 1968, in Y. Öhman (ed.), ‘Mass Motions in Solar Flares and Related Phenomena’, Nobel Symp. 9, 109.
Evans, J. W.: 1966, in Atti del Convegno Sui Campi Magnetici Solari, Firenze (Italy).
Giovanelli, R. B. and McCabe, M. K.: 1958, Australian J. Phys. 11, 191.
Gopasyuk, S. I. and Ogir, M. B.: 1963, Izv. Krymsk. Astrofiz. Obs. 30, 185.
Gopasyuk, S. I., Ogir, M. B., and Tsap, T. T.: 1963, Izv. Krymsk. Astrofiz. Obs. 30, 148.
Harvey, J. W.: 1969, ‘Magnetic Fields Associated with Active Region Prominences’, Ph.D. Dissertation, University of Colorado,
Hasse, M. and Gaenswein, P.: 1967, Zeiss Information No. 65, p. 75.
Koval, A. N.: 1964, Izv. Krymsk. Astrofiz. Obs. 32, 32.
Koval, A. N.: 1965a, Izv. Krymsk. Astrofiz. Obs. 33, 138.
Koval, A. N.: 1965b, Izv. Krymsk. Astrofiz. Obs. 34, 278.
Koval, A. N.: 1967, Izv. Krymsk. Astrofiz. Obs. 37, 62.
Matres, M. -J., Michard, R., Soru-Iscovici, I., and Tsap, T. T.: 1968, Solar Phys. 5, 187.
Michard, R.: 1971, in R. Howard (ed.), ‘Solar Magnetic Fields’, IAU Symp. 43, 359.
Newton, H. W.: 1942, Monthly Notices Roy. Astron. Soc. 102, 2.
Ribes, E.: 1969, Astron. Astrophys. 2, 316.
Rust, D. M.: 1968, in K. O. Kiepenheuer (ed.), ‘Structure and Development of Solar Active Regions’, IAU Symp. 35, 77.
Rust, D. M.: 1970, Astrophys. J. 160, 315.
Rust, D. M.: 1972, Solar Phys. 25, 141.
Rust, D. M. and Roy, J.-R.: 1971, in R. Howard (ed.), ‘Solar Magnetic Fields’, IAU Symp. 43, 569.
Schmidt, H. U.: 1964, AAS-NASA Symposium on the Physics of Solar Flares, NASA SP-50, p. 107.
Severny, A. B.: 1964, Izv. Krymsk. Astrofiz. Obs. 31, 159.
Severny, A. B. and Koval, A. N.: 1961, Izv. Krymsk. Astrofiz. Obs. 26, 3.
Smith, E.v.P.: 1968, in Y. Öhman (ed.), ‘Mass Motions in Solar and Related Phenomena’, Nobel Symp. 9, 137.
Smith, H. J. and Smith, E.v.P.: 1963, Solar Flares, Macmillan Co. (New York), pp. 105–110.
Stenflo, J. O.: 1968, Acta Univ. Lund. II, no. 2.
Sweet, P.: 1971, im R. Howard (ed.), ‘Solar Magnetic Fields’, IAU Symp. 43, 457.
Westin, H.: 1969, Solar Phys. 7, 393.
Zvereva, A. M. and Severny, A. B.: 1970, Izv. Krymsk. Astrofiz. Obs. 41–42, 97–157.
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Roy, J.R. The magnetic properties of solar surges. Sol Phys 28, 95–114 (1973). https://doi.org/10.1007/BF00152915
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DOI: https://doi.org/10.1007/BF00152915