• Solar Filaments as Tracers of Subsurface Processes

    • Fulltext


        Click here to view fulltext PDF

      Permanent link:

    • Keywords


      Solar filaments; solar dynamo; magnetic fields.

    • Abstract


      Solar filaments are discussed in terms of two contrasting paradigms. The standard paradigm is that filaments are formed by condensation of coronal plasma into magnetic fields that are twisted or dimpled as a consequence of motions of the fields' sources in the photo-sphere. According to a new paradigm, filaments form in rising, twisted flux ropes and are a necessary intermediate stage in the transfer to interplanetary space of dynamo-generated magnetic flux. It is argued that the accumulation of magnetic helicity in filaments and their coronal surroundings leads to filament eruptions and coronal mass ejections. These ejections relieve the Sun of the flux generated by the dynamo and make way for the flux of the next cycle.

    • Author Affiliations


      D. M. Rust1

      1. Applied Physics Laboratoiy, Johns Hopkins University, 11100 Johns Hopkins Road, Laurel, MD 20723, USA.
  • Journal of Astrophysics and Astronomy | News

    • Continuous Article Publication

      Posted on January 27, 2016

      Since January 2016, the Journal of Astrophysics and Astronomy has moved to Continuous Article Publishing (CAP) mode. This means that each accepted article is being published immediately online with DOI and article citation ID with starting page number 1. Articles are also visible in Web of Science immediately. All these have helped shorten the publication time and have improved the visibility of the articles.

© 2017 Indian Academy of Sciences, Bengaluru.