Abstract Details
| Name: Sanjay Kumar Affiliation: Physical Research Laboratory Conference ID: ASI2017_1409 Title : ON THE ROLE OF REPETITIVE MAGNETIC RECONNECTIONS IN EVOLUTION OF MAGNETIC FLUX ROPES IN SOLAR CORONA Authors and Co-Authors : 1. R. Bhattacharyya, 2. Bhuwan Joshi 3. P. K. Smolarkiewicz Authors 1 and 2 are affiliated to Udaipur Solar Observatory, Physical Research Laboratory. Author 3 is affiliated to European Centre for Medium-Range Weather Forecasts, Reading RG2 9AX, UK. Abstract Type : Oral Abstract Category : Sun and the Solar System Abstract : Parkerʼs magnetostatic theorem, extended to astrophysical magnetofluids with large magnetic Reynolds number, supports ceaseless regeneration of current sheets and, hence, spontaneous magnetic reconnections recurring in time. Consequently, a scenario is possible where the repeated reconnections provide an autonomous mechanism governing emergence of coherent structures in astrophysical magnetofluids. In this work, such a scenario is explored by performing numerical computations commensurate with the magnetostatic theorem. In particular, the computations explore the evolution of a flux rope governed by repeated reconnections in a magnetic geometry resembling bipolar loops of solar corona. The revealed morphology of the evolution process—including onset and ascent of the rope, reconnection locations, and the associated topology of the magnetic field lines—agrees with observations, and thus substantiates physical realizability of the advocated mechanism. |