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Solar flare diagnostic in an unprecedented frequency range from microwaves to THz frequencies: challenges for interpretation (flat)

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. Although the central focus of this proposal is on the description of solar activity at sub-THz and THz frequencies, it will be essential to analyze their relationships to observations at other radio, visible and higher UV, X- and gamma-ray energy frequency ranges, attempting to find new clues to understand the processes of energy build up and explosive release in active regions. To attain these objectives we propose a special effort along the declining phase of the current Solar Cycle 24 (2014-2018), maintaining, upgrading ongoing programs and implementing new experimental activities. The proposal includes new research and developments on THz detecting sensors, filters, materials and integrated systems for the current applications. Special efforts will be given for the interpretation of results from solar flare THz emission, associated emissions at other wavelengths, in radio, visible, UV, X- and gamma-rays. Attention will be given to high energy physical processes occurring in solar flare particle acceleration and their comparison to mechanisms in laboratory scale accelerators. The proposal is presented in the following sections: Scientific background; New solar observations at 30 THz; Cm,-, Mm-. sub-mm waves solar observations at Itapetinga and El Leoncito, Argentina Andes; . Supporting Ha high cadence observations; Complementary charged particle detection; Solar flare THz photometers on long duration stratospheric balloon flights; Cooperation with with UC Berkeley GRIPS experiment over Antarctica; Cooperation with Lebedev Physical Institute over Russia; Brazilian users of the attitude controlled gondola;Ground-based solar flare THz observations; THz atmospheric transmission; The HATS telescope; Budget estimates (2014-2018)- References (AU)

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Scientific publications (29)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
MENEZES, FABIAN; SELHORST, CAIUS L.; GIMENEZ DE CASTRO, CARLOS GUILLERMO; VALIO, ADRIANA. The Subterahertz Solar Cycle: Polar and Equatorial Radii Derived from SST and ALMA. ASTROPHYSICAL JOURNAL, v. 910, n. 1, . (13/24155-3, 19/03301-8, 13/10559-5)
VALLE SILVA, JORGE F.; GUILLERMO GIMENEZ DE CASTRO, C.; SIMOES, PAULO J. A.; RAULIN, JEAN-PIERRE. Submillimeter Radiation as the Thermal Component of the Neupert Effect. SOLAR PHYSICS, v. 294, n. 11, . (13/24155-3)
HUDSON, HUGH S.; SIMOES, PAULO J. A.; FLETCHER, LYNDSAY; HAYES, LAURA A.; HANNAH, IAIN G.. Hot X-ray onsets of solar flares. Monthly Notices of the Royal Astronomical Society, v. 501, n. 1, p. 1273-1281, . (13/24155-3)
CASSIANO, MARTA M.; ESPINOZA, DEYSI CORNEJO; RAULIN, JEAN-PIERRE; GIMENEZ DE CASTRO, CARLOS G.. Precipitable water vapor and 212 GHz atmospheric optical depth correlation at El Leoncito site. JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS, v. 168, p. 32-36, . (13/24155-3)
SILVA, ALEXANDRE JOSE DE OLIVEIRA E; SELHORST, CAIUS LUCIUS; COSTA, JOAQUIM E. R.; SIMOES, PAULO J. A.; DE CASTRO, CARLOS GUILLERMO GIMENEZ; WEDEMEYER, SVEN; WHITE, STEPHEN M.; BRAJSA, ROMAN; VALIO, ADRIANA. A Genetic Algorithm to Model Solar Radio Active Regions From 3D Magnetic Field Extrapolations. FRONTIERS IN ASTRONOMY AND SPACE SCIENCES, v. 9, p. 13-pg., . (13/10559-5, 13/24155-3, 19/03301-8)
GIMENEZ DE CASTRO, C. G.; RAULIN, J-P; SILVA, J. F. VALLE; SIMOES, P. J. A.; KUDAKA, A. S.; VALIO, A.. The 6 September 2017 X9 Super Flare Observed From Submillimeter to Mid-IR. SPACE WEATHER-THE INTERNATIONAL JOURNAL OF RESEARCH AND APPLICATIONS, v. 16, n. 9, p. 1261-1268, . (13/24155-3)
MACKINNON, ALEXANDER; SZPIGEL, SERGIO; GIMENEZ DE CASTRO, GUILLERMO; TUNEU, JORDI. FLUKA Simulations of Pion Decay Gamma-Radiation from Energetic Flare Ions. SOLAR PHYSICS, v. 295, n. 12, . (17/13282-5, 09/18386-7, 13/24155-3, 16/23428-4)
ZURBRIGGEN, ERNESTO; CECERE, MARIANA; SIEYRA, MARIA VALERIA; KRAUSE, GUSTAVO; COSTA, ANDREA; GIMENEZ DE CASTRO, C. GUILLERMO. An MHD Study of Large-Amplitude Oscillations in Solar Filaments. SOLAR PHYSICS, v. 296, n. 12, . (13/24155-3, 18/25177-4)
MITEVA, R.; KAUFMANN, P.; CABEZAS, D. P.; CASSIANO, M. M.; FERNANDES, L. O. T.; FREELAND, S. L.; KARLICKY, M.; KERDRAON, A.; KUDAKA, A. S.; LUONI, M. L.; et al. Comparison of 30 THz impulsive burst time development to microwaves, H alpha, EUV, and GOES soft X-rays. Astronomy & Astrophysics, v. 586, . (13/24155-3)
MENEZES, FABIAN; SELHORST, CAIUS L.; GIMENEZ DE CASTRO, CARLOS GUILLERMO; VALIO, ADRIANA. Subterahertz radius and limb brightening of the Sun derived from SST and ALMA. Monthly Notices of the Royal Astronomical Society, v. 511, n. 1, p. 9-pg., . (13/10559-5, 13/24155-3, 19/03301-8)
VALLE SILVA, J. F.; GIMENEZ DE CASTRO, C. G.; SELHORST, C. L.; RAULIN, J-P; VALIO, A.. Spectral signature of solar active region in millimetre and submillimetre wavelengths. Monthly Notices of the Royal Astronomical Society, v. 500, n. 2, p. 1964-1969, . (13/24155-3)
GIMENEZ DE CASTRO, C. GUILLERMO; RAULIN, JEAN-PIERRE; VALIO, ADRIANA; ALAIA, GUILHERME; ALVARENGA, VINICIUS; BORTOLUCCI, EMILIO CARLOS; FERNANDES, SILVIA HELENA; FRANCILE, CARLOS; GIORGETTI, TIAGO; KUDAKA, AMAURI SHOSSEI; et al. HATS: A Ground-Based Telescope to Explore the THz Domain. SOLAR PHYSICS, v. 295, n. 4, . (13/24155-3)
DA SILVA, DOUGLAS FELIX; HUI, LI; SIMOES, PAULO J. A.; VALIO, ADRIANA; COSTA, JOAQUIM E. R.; HUDSON, HUGH S.; FLETCHER, LYNDSAY; HAYES, LAURA A.; HANNAH, IAIN G.. Statistical analysis of the onset temperature of solar flares in 2010-2011. Monthly Notices of the Royal Astronomical Society, v. 525, n. 3, p. 6-pg., . (13/24155-3)
MENEZES, FABIAN; VALIO, ADRIANA. Solar Radius at Subterahertz Frequencies and Its Relation to Solar Activity (vol 292, 195, 2017). SOLAR PHYSICS, v. 293, n. 6, p. 1-pg., . (13/24155-3)
HIDALGO, R. F. R.; KAUFMANN, PIERRE; MOROSI, ANDRE; IEEE. Polarized solar activity at mm-waves. 2017 XXXIIND GENERAL ASSEMBLY AND SCIENTIFIC SYMPOSIUM OF THE INTERNATIONAL UNION OF RADIO SCIENCE (URSI GASS), v. N/A, p. 3-pg., . (13/24155-3)
HIDALGO RAMIREZ, R. F.; MOROSI, A.; SILVA, D.; SIMOES, P. J. A.; VALIO, A.. Center-to-Limb Variation of Solar Bursts Polarization at Millimeter Wavelengths. SOLAR PHYSICS, v. 294, n. 8, . (13/24155-3)
TUNEU, J.; GIMENEZ DE CASTRO, G.; SZPIGEL, S.; MACKINNON, A.. Modelling magnetised medium particle transport in the guiding centre limit with GEANT4. Astronomy & Astrophysics, v. 654, . (16/23428-4, 18/08180-1, 13/24155-3)
GIMENEZ DE CASTRO, C. GUILLERMO; PEREIRA, ANDRE L. G.; VALLE SILVA, J. FERNANDO; SELHORST, CAIUS L.; MANDRINI, CRISTINA H.; CRISTIANI, GERMAN D.; RAULIN, JEAN-PIERRE; VALIO, ADRIANA. The Submillimeter Active Region Excess Brightness Temperature during Solar Cycles 23 and 24. ASTROPHYSICAL JOURNAL, v. 902, n. 2, . (13/24155-3)
SILVA, J. F. VALLE; DE CASTRO, C. G. GIMENEZ; PASSARELLI, CELI; ESPINOZA, DEYSI CORNEJO; CASSIANO, MARTA MARIA; RAULIN, JEAN-PIERRE; VALIO, A.. Optical depth measurements at 45 and 90 GHz in CASLEO. JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS, v. 199, . (13/24155-3)
LOPEZ, FERNANDO M.; GIMENEZ DE CASTRO, CARLOS GUILLERMO; MANDRINI, CRISTINA H.; SIMOES, PAULO J. A.; CRISTIANI, GERMAN D.; GARY, DALE E.; FRANCILE, CARLOS; DEMOULIN, PASCAL. A solar flare driven by thermal conduction observed in mid-infraredx22c6;. Astronomy & Astrophysics, v. 657, . (13/24155-3)
DA SILVA, DOUGLAS FELIX; VALIO, ADRIANA. Broken Power-law Energy Spectra of the Accelerated Electrons Detected in Radio and Hard X-Rays during the SOL2013-05-13 Event. Astrophysical Journal Letters, v. 915, n. 1, . (09/50637-0, 13/10559-5, 13/24155-3)
FERNANDES, L. O. T.; KAUFMANN, P.; CORREIA, E.; DE CASTRO, C. G. GIMENEZ; KUDAKA, A. S.; MARUN, A.; PEREYRA, P.; RAULIN, J. -P.; VALIO, A. B. M.. Spectral Trends of Solar Bursts at Sub-THz Frequencies. SOLAR PHYSICS, v. 292, n. 1, . (13/24155-3)
GRAHAM, DAVID R.; CAUZZI, GIANNA; ZANGRILLI, LUCA; KOWALSKI, ADAM; SIMOES, PAULO; ALLIED, JOEL. Spectral Signatures of Chromospheric Condensation in a Major Solar Flare. ASTROPHYSICAL JOURNAL, v. 895, n. 1, . (13/24155-3)
KUDAKA, A. S.; CASSIANO, M. M.; MARCON, R.; CABEZAS, D. P.; FERNANDES, L. O. T.; HIDALGO RAMIREZ, R. F.; KAUFMANN, P.; DE SOUZA, R. V.. The New 30 THz Solar Telescope in So Paulo, Brazil. SOLAR PHYSICS, v. 290, n. 8, p. 2373-2379, . (13/24155-3, 06/06847-1)
TROTTET, G.; RAULIN, J. -P.; MACKINNON, A.; GIMENEZ DE CASTRO, G.; SIMOES, P. J. A.; CABEZAS, D.; DE LA LUZ, V.; LUONI, M.; KAUFMANN, P.. Origin of the 30 THz Emission Detected During the Solar Flare on 2012 March 13 at 17:20 UT. SOLAR PHYSICS, v. 290, n. 10, p. 2809-2826, . (13/24155-3, 15/13596-4)
LABROSSE, NICOLAS; RODGER, ANDREW S.; RADZISZEWSKI, KRZYSZTOF; RUDAWY, PAWEL; ANTOLIN, PATRICK; FLETCHER, LYNDSAY; LEVENS, PETER J.; PEAT, AARON W.; SCHMIEDER, BRIGITTE; SIMOES, PAULO J. A.. First high resolution interferometric observation of a solar prominence with ALMA. Monthly Notices of the Royal Astronomical Society, v. 513, n. 1, p. 5-pg., . (13/24155-3)
ZURBRIGGEN, ERNESTO; DE CASTRO, C. GUILLERMO GIMENEZ; COSTA, ANDREA; CECERE, MARIANA; SELHORST, CAIUS L.. Estimating the Coronal Supra-Arcade Downflow Radio Emission: From Centimeter Through Submillimeter Wavelengths. FRONTIERS IN ASTRONOMY AND SPACE SCIENCES, v. 9, p. 11-pg., . (13/24155-3)
MCLAUGHLIN, SHAUN A.; MILLIGAN, RYAN O.; KERR, GRAHAM S.; MONSON, AARON J.; SIMOES, PAULO J.; MATHIOUDAKIS, MIHALIS. Formation of the Lyman Continuum during Solar Flares. ASTROPHYSICAL JOURNAL, v. 944, n. 2, p. 15-pg., . (13/24155-3)
KAUFMANN, P.; ABRANTES, A.; BORTOLUCCI, E. C.; CASPI, A.; FERNANDES, L. O. T.; KROPOTOV, G.; KUDAKA, A. S.; LAURENT, G.; MACHADO, N.; MARCON, R.; et al. THz Solar Observations on Board of a Trans-Antarctic Stratospheric Balloon Flight. 2016 41ST INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ), v. N/A, p. 2-pg., . (13/24155-3)

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