@Article{KaufmannWFMFKSAFGMVRG:2013:BrImSo,
               author = "Kaufmann, P. and White, S. M. and Freeland, S. L. and Marcon, R. 
                         and Fernandes, L. O. T. and Kudaka, A. S. and de Souza, R. V. and 
                         Aballay, J. L. and Fernandez, G. and Godoy, R. and Marun, A. and 
                         Valio, Adriana and Raulin, Jean-Pierre and Gim{\'e}nez de Castro, 
                         C. G.",
          affiliation = "{} and Air Force Research Laboratories, Space Vehicles 
                         Directorate, Albuquerque, NM 87117, USA and Lockheed Martin Solar 
                         and Astrophysics Laboratory, Palo Alto, CA 94304, USA and {"}Gleb 
                         Wataghin” Physics Institute, State University of Campinas, 
                         Campinas, SP, Brazil and Center of Radio Astronomy and 
                         Astrophysics, Engineering School, Mackenzie Presbyterian 
                         University, Sao Paulo, SP, Brazil and Center of Radio Astronomy 
                         and Astrophysics, Engineering School, Mackenzie Presbyterian 
                         University, Sao Paulo, SP, Brazil and Center of Radio Astronomy 
                         and Astrophysics, Engineering School, Mackenzie Presbyterian 
                         University, Sao Paulo, SP, Brazil and El Leoncito Astronomical 
                         Complex, CONICET, San Juan, Argentina and El Leoncito Astronomical 
                         Complex, CONICET, San Juan, Argentina and El Leoncito Astronomical 
                         Complex, CONICET, San Juan, Argentina and El Leoncito Astronomical 
                         Complex, CONICET, San Juan, Argentina and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and Center of Radio Astronomy and 
                         Astrophysics, Engineering School, Mackenzie Presbyterian 
                         University, Sao Paulo, SP, Brazil and El Leoncito Astronomical 
                         Complex, CONICET, San Juan, Argentina",
                title = "A bright impulsive solar burst detected at 30 THz",
              journal = "Astrophysical Journal",
                 year = "2013",
               volume = "768",
                pages = "134 (9pp)",
                month = "May",
             keywords = "sun activity, sun flares, infrared, radio radiation, UV radiation, 
                         X-rays, gamma rays.",
             abstract = "Ground- and space-based observations of solar flares from radio 
                         wavelengths to gamma-rays have produced considerable insights but 
                         raised several unsolved controversies. The last unexplored 
                         wavelength frontier for solar flares is in the range of 
                         submillimeter and infrared wavelengths. Here we report the 
                         detection of an intense impulsive burst at 30 THz using a new 
                         imaging system. The 30 THz emission exhibited remarkable time 
                         coincidence with peaks observed at microwave, mm/submm, visible, 
                         EUV, and hard X-ray wavelengths. The emission location coincides 
                         with a very weak white-light feature, and is consistent with 
                         heating below the temperature minimum in the atmosphere. However, 
                         there are problems in attributing the heating to accelerated 
                         electrons. The peak 30 THz flux is several times larger than the 
                         usual microwave peak near 9 GHz, attributed to non-thermal 
                         electrons in the corona. The 30 THz emission could be consistent 
                         with an optically thick spectrum increasing from low to high 
                         frequencies. It might be part of the same spectral component found 
                         at sub-THz frequencies whose nature remains mysterious. Further 
                         observations at these wavelengths will provide a new window for 
                         flare studies.",
                  doi = "10.1088/0004-637X/768/2/134",
                  url = "http://dx.doi.org/10.1088/0004-637X/768/2/134",
                 issn = "0004-637X and 1538-4357",
                label = "self-archiving-INPE-MCTI-GOV-BR",
             language = "en",
           targetfile = "0004-637X_768_2_134.pdf",
        urlaccessdate = "04 maio 2024"
}