A Bright Impulsive Solar Burst Detected at 30 Thz
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...
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| Tipo de documento: | Artigo |
| Estado: | Published version |
| Data de publicação: | 2013 |
| País: | Argentina |
| Recursos: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositório: | CONICET Digital (CONICET) |
| Idioma: | Inglês |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/1634 |
| Acesso em linha: | http://hdl.handle.net/11336/1634 |
| Nível de acesso: | Acesso aberto |
| Palavra-chave: | SUN: ACTIVITY SUN: FLARES SUN: INFRARED SUN: RADIO RADIATION SUN: UV RADIATION SUN: X-RAYS, GAMMA RAYS https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| _version_ | 1878403844774297600 |
|---|---|
| author | Kaufmann, P. |
| author2 | White, S. M. Freeland, S. L. Marcon, R. Fernandes, L. O. T Kudaka, A. S. de Souza, R. V. Aballay, Jose Luis Fernandez, German Enzo Leonel Godoy, Rodolfo Alfredo Marun, Adolfo Hector Valio, A. Raulin, J. P. Gimenez de Castro, Carlos Guillermo |
| author2_role | author author author author author author author author author author author author author |
| author_browse | Aballay, Jose Luis Fernandes, L. O. T Fernandez, German Enzo Leonel Freeland, S. L. Gimenez de Castro, Carlos Guillermo Godoy, Rodolfo Alfredo Kaufmann, P. Kudaka, A. S. Marcon, R. Marun, Adolfo Hector Raulin, J. P. Valio, A. White, S. M. de Souza, R. V. |
| author_facet | Kaufmann, P. White, S. M. Freeland, S. L. Marcon, R. Fernandes, L. O. T Kudaka, A. S. de Souza, R. V. Aballay, Jose Luis Fernandez, German Enzo Leonel Godoy, Rodolfo Alfredo Marun, Adolfo Hector Valio, A. Raulin, J. P. Gimenez de Castro, Carlos Guillermo |
| author_role | author |
| collection | CONICET Digital (CONICET) |
| description | 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. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | AR_cafe470e5daa34d3ad5961b3e3e1fb2f |
| identifier_str_mv | Kaufmann, P.; White, S. M.; Freeland, S. L.; Marcon, R.; Fernandes, L. O. T; et al.; A Bright Impulsive Solar Burst Detected at 30 Thz; IOP Publishing; Astrophysical Journal; 768; 2; 23-4-2013; 1-9 0004-637X |
| institution | Consejo Nacional de Investigaciones Científicas y Técnicas |
| instname_str | Consejo Nacional de Investigaciones Científicas y Técnicas |
| language | eng |
| network_acronym_str | AR |
| network_name_str | Argentina |
| oai_identifier_str | oai:ri.conicet.gov.ar:11336/1634 |
| publishDate | 2013 |
| publishDateSort | 2013 |
| publisher | IOP Publishing |
| publisherStr | IOP Publishing |
| reponame_str | CONICET Digital (CONICET) |
| spelling | A Bright Impulsive Solar Burst Detected at 30 Thz Kaufmann, P. White, S. M. Freeland, S. L. Marcon, R. Fernandes, L. O. T Kudaka, A. S. de Souza, R. V. Aballay, Jose Luis Fernandez, German Enzo Leonel Godoy, Rodolfo Alfredo Marun, Adolfo Hector Valio, A. Raulin, J. P. Gimenez de Castro, Carlos Guillermo SUN: ACTIVITY SUN: FLARES SUN: INFRARED SUN: RADIO RADIATION SUN: UV RADIATION SUN: X-RAYS, GAMMA RAYS https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 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. Fil: Kaufmann, P.. Universidade Presbiteriana Mackenzie. Escola de Engenharia. Centro de Radio Astronomia e Astrofisica; Brasil; . Universidade Estadual de Campinas; Brasil Fil: White, S. M.. Space Vehicles Directorate. Air Force Research Laboratories; Estados Unidos Fil: Freeland, S. L.. Lockheed Martin Solar and Astrophysics Laboratory; Estados Unidos Fil: Marcon, R.. Universidade Estadual de Campinas; Brasil Fil: Fernandes, L. O. T. Universidade Presbiteriana Mackenzie. Escola de Engenharia. Centro de Radio Astronomia e Astrofisica; Brasil; Fil: Kudaka, A. S.. Universidade Presbiteriana Mackenzie. Escola de Engenharia. Centro de Radio Astronomia e Astrofisica; Brasil; Fil: de Souza, R. V.. Universidade Presbiteriana Mackenzie. Escola de Engenharia. Centro de Radio Astronomia e Astrofisica; Brasil; Fil: Aballay, Jose Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - CONICET - San Juan. Complejo Astronómico; Argentina Fil: Fernandez, German Enzo Leonel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - CONICET - San Juan. Complejo Astronómico; Argentina Fil: Godoy, Rodolfo Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - CONICET - San Juan. Complejo Astronómico; Argentina Fil: Marun, Adolfo Hector. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - CONICET - San Juan. Complejo Astronómico; Argentina Fil: Valio, A.. Universidade Presbiteriana Mackenzie. Escola de Engenharia. Centro de Radio Astronomia e Astrofisica; Brasil; Fil: Raulin, J. P.. Universidade Presbiteriana Mackenzie. Escola de Engenharia. Centro de Radio Astronomia e Astrofisica; Brasil; Fil: Gimenez de Castro, Carlos Guillermo. Universidade Presbiteriana Mackenzie. Escola de Engenharia. Centro de Radio Astronomia e Astrofisica; Brasil; IOP Publishing http://hdl.handle.net/11336/1634 Kaufmann, P.; White, S. M.; Freeland, S. L.; Marcon, R.; Fernandes, L. O. T; et al.; A Bright Impulsive Solar Burst Detected at 30 Thz; IOP Publishing; Astrophysical Journal; 768; 2; 23-4-2013; 1-9 0004-637X |
| spellingShingle | A Bright Impulsive Solar Burst Detected at 30 Thz Kaufmann, P. SUN: ACTIVITY SUN: FLARES SUN: INFRARED SUN: RADIO RADIATION SUN: UV RADIATION SUN: X-RAYS, GAMMA RAYS https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| status_str | publishedVersion |
| title | A Bright Impulsive Solar Burst Detected at 30 Thz |
| title_full | A Bright Impulsive Solar Burst Detected at 30 Thz |
| title_fullStr | A Bright Impulsive Solar Burst Detected at 30 Thz |
| title_full_unstemmed | A Bright Impulsive Solar Burst Detected at 30 Thz |
| title_short | A Bright Impulsive Solar Burst Detected at 30 Thz |
| title_sort | A Bright Impulsive Solar Burst Detected at 30 Thz |
| topic | SUN: ACTIVITY SUN: FLARES SUN: INFRARED SUN: RADIO RADIATION SUN: UV RADIATION SUN: X-RAYS, GAMMA RAYS https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| topic_facet | SUN: ACTIVITY SUN: FLARES SUN: INFRARED SUN: RADIO RADIATION SUN: UV RADIATION SUN: X-RAYS, GAMMA RAYS https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| url | http://hdl.handle.net/11336/1634 |