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H alpha Surges and X-Ray Jets in AR 7260
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1996
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Nine events in AR 7260 were observed simultaneously as X‑ray jets and Hα surges linked to moving magnetic bipoles. The study aims to develop a magnetic‑reconnection model that explains the temporal and spatial relationship between the jets and surges in AR 7260. The authors construct a magnetic‑reconnection model linking moving bipoles, flaring X‑ray loops, converging Hα footpoints, and the observed blueshift, redshift, and spin patterns of the surges. Surge bases show initial blueshifts followed by redshifts, the surges spin in a direction consistent with twist relaxation, and footpoint convergence and moving‑blueshift features are observed, supporting the magnetic‑reconnection model.
view Abstract Citations (274) References (46) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS H alpha Surges and X-Ray Jets in AR 7260 Canfield, Richard C. ; Reardon, Kevin P. ; Leka, K. D. ; Shibata, K. ; Yokoyama, T. ; Shimojo, M. Abstract We discuss nine events, observed simultaneously as jets in X-rays and surges in Hα, which are associated with moving magnetic bipoles. The Hα surges are adjacent to the X-ray jets. At the bases of these surges we observe both blueshifts (initially) and redshifts (1-2 minutes later). All the observed surges spin in a sense consistent with the relaxation of the twist stored in the magnetic fields of the moving magnetic bipoles. Newly discovered phenomena include footpoint convergence and moving-blueshift features. We develop a model of the role of magnetic reconnection in these events. This model explains the temporal and spatial relationship between the jets and surges, the role of the moving bipoles, the flaring X-ray loops and their converging Hα footpoints, the Hα moving-blueshift features, the direction and amount of spin of the surges, and the relative temporal development of the Hα redshifts and blueshifts. Publication: The Astrophysical Journal Pub Date: June 1996 DOI: 10.1086/177389 Bibcode: 1996ApJ...464.1016C Keywords: SUN: CORONA; SUN: MAGNETIC FIELDS; SUN: X-RAYS; GAMMA RAYS; SUN: SUNSPOTS full text sources ADS |