author = "Santos, Jean C. and Wrasse, Cristiano Max",
          affiliation = "{Universidade Federal Tecnol{\'o}gica do Paran{\'a} (UTFPR)} and 
                         {Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "Reorganization of photospheric magnetic fields in active regions 
                         during energetic flares",
              journal = "Solar Physics",
                 year = "2016",
               volume = "291",
               number = "4",
                pages = "1107--1114",
                month = "Apr.",
             keywords = "Magnetic fields, energy spectra, Magnetic fields, photosphere, 
                         Sun, flares.",
             abstract = "The reorganization of the photospheric magnetic field may be 
                         important for flaring activity. In this work we use the time 
                         evolution of the magnetic power spectra to identify for which 
                         length scales the reorganization of the active region magnetic 
                         field is most closely related to energetic flares. Our results 
                         show that the reorganization occurs mainly for length scales 
                         larger than 12.6 Mm and may start much before the time of the 
                         flare, but the time evolution of magnetic power spectra does not 
                         show regular patterns. An analysis of the dissipation spectra 
                         suggests that the dissipation takes place at all spatial scales, 
                         including small wavenumbers in which more energy is available.",
                  doi = "10.1007/s11207-016-0895-0",
                  url = "http://dx.doi.org/10.1007/s11207-016-0895-0",
                 issn = "0038-0938 and 1573-093X",
             language = "en",
           targetfile = "santos_reorganization.pdf",
        urlaccessdate = "04 dez. 2020"