Solar activity emissions from submillimeter waves to infrared (SIRA)
| Full text | |
| Author(s): Show less - |
Miteva, R.
[1, 2]
;
Kaufmann, P.
[3, 1]
;
Cabezas, D. P.
[1]
;
Cassiano, M. M.
[1]
;
Fernandes, L. O. T.
[1]
;
Freeland, S. L.
[4]
;
Karlicky, M.
[5]
;
Kerdraon, A.
[6]
;
Kudaka, A. S.
[1]
;
Luoni, M. L.
[7]
;
Marcon, R.
[8, 9]
;
Raulin, J. -P.
[1]
;
Trottet, G.
[6]
;
White, S. M.
[10]
Total Authors: 14
|
| Affiliation: | [1] Univ Prebiteriana Mackenzie, Sch Engn, Ctr Radio Astron & Astrophys, Sao Paulo, SP - Brazil
[2] Bulgarian Acad Sci, Space Res & Technol Inst, BU-1113 Sofia - Bulgaria
[3] Univ Estadual Campinas, Ctr Semicond Components, Campinas, SP - Brazil
[4] Lockheed Martin Solar & Astrophys Lab, Palo Alto, CA 94304 - USA
[5] Acad Sci Czech Republic, Inst Astron, CS-25165 Ondrejov - Czech Republic
[6] LESIA Observ Paris, F-92190 Meudon - France
[7] CONICET UBA, IAFE, Buenos Aires, DF - Argentina
[8] Univ Estadual Campinas, Gleb Wataghin Phys Inst, Campinas, SP - Brazil
[9] Bernard Lyot Solar Observ, Campinas, SP - Brazil
[10] Space Vehicles Directorate, Air Force Res Labs, Albuquerque, NM 87117 - USA
Total Affiliations: 10
|
| Document type: | Journal article |
| Source: | Astronomy & Astrophysics; v. 586, FEB 2016. |
| Web of Science Citations: | 3 |
| Abstract | |
The recent discovery of impulsive solar burst emission in the 30 THz band is raising new interpretation challenges. One event associated with a GOES M2 class flare has been observed simultaneously in microwaves, Ha, EUV, and soft X-ray bands. Although these new observations confirm some features found in the two prior known events, they exhibit time profile structure discrepancies between 30 THz, microwaves, and hard X-rays (as inferred from the Neupert effect). These results suggest a more complex relationship between 30 THz emission and radiation produced at other wavelength ranges. The multiple frequency emissions in the impulsive phase are likely to be produced at a common flaring site lower in the chromosphere. The 30 THz burst emission may be either part of a nonthermal radiation mechanism or due to the rapid thermal response to a beam of high-energy particles bombarding the dense solar atmosphere. (AU) | |
| FAPESP's process: | 13/24155-3 - Solar flare diagnostic in an unprecedented frequency range from microwaves to THz frequencies: challenges for interpretation (flat) |
| Grantee: | Carlos Guillermo Giménez de Castro |
| Support type: | Research Projects - Thematic Grants |