Multi-resolution wavelet analysis of high time resolution millimeter wavelength observations of solar bursts
- Autores
- Giménez de Castro, C. G.; Raulin, J. P.; Mandrini, Cristina Hemilse; Kaufmann, Pierre; Magun, A.
- Año de publicación
- 2001
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- By means of the wavelet representation of multi-resolution analysis, we study millimeter wavelength (mm-w) radio solar bursts obtained at 48 GHz with high time resolution (<=8 ms); observed at Itapetinga (Brazil). The multi-resolution analysis decomposes the signal locally both in time and in frequency, allowing us to identify the different temporal structures which underlie the flux density time series and the transient phenomena characteristic of solar bursts. The analysis was applied to the flux time profile of four solar bursts observed at a mm-w, studying separately the pre-flare, impulsive and post-flare phases when possible. We find that a wide range of time scales contributes to the radio flux. The minimum time scale found for the impulsive phase is 32 ms, after which the noise dominates the emission; the maximum is 8 s. Pre- and post-flare phases have a minimum time scale of 256 ms and a maximum between 1 to 8 s. Multi-resolution ``spectral indexes'', which are a measure of the self-similar behavior of the signal, are in some cases bigger for the impulsive phase than for the pre- and post-flare phases. We find that as the flux becomes higher the contribution from shorter time scales is enhanced.
Fil: Giménez de Castro, C. G.. Instituto Presbiteriano Mackenzie; Brasil
Fil: Raulin, J. P.. Instituto Presbiteriano Mackenzie; Brasil
Fil: Mandrini, Cristina Hemilse. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Kaufmann, Pierre. Instituto Presbiteriano Mackenzie; Brasil
Fil: Magun, A.. University of Berne; Suiza - Materia
-
SOLAR FLARES
SOLAR RADIO RADIATION
SOLAR DATA ANALYSIS - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/22477
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Multi-resolution wavelet analysis of high time resolution millimeter wavelength observations of solar burstsGiménez de Castro, C. G.Raulin, J. P.Mandrini, Cristina HemilseKaufmann, PierreMagun, A.SOLAR FLARESSOLAR RADIO RADIATIONSOLAR DATA ANALYSIShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1By means of the wavelet representation of multi-resolution analysis, we study millimeter wavelength (mm-w) radio solar bursts obtained at 48 GHz with high time resolution (<=8 ms); observed at Itapetinga (Brazil). The multi-resolution analysis decomposes the signal locally both in time and in frequency, allowing us to identify the different temporal structures which underlie the flux density time series and the transient phenomena characteristic of solar bursts. The analysis was applied to the flux time profile of four solar bursts observed at a mm-w, studying separately the pre-flare, impulsive and post-flare phases when possible. We find that a wide range of time scales contributes to the radio flux. The minimum time scale found for the impulsive phase is 32 ms, after which the noise dominates the emission; the maximum is 8 s. Pre- and post-flare phases have a minimum time scale of 256 ms and a maximum between 1 to 8 s. Multi-resolution ``spectral indexes'', which are a measure of the self-similar behavior of the signal, are in some cases bigger for the impulsive phase than for the pre- and post-flare phases. We find that as the flux becomes higher the contribution from shorter time scales is enhanced.Fil: Giménez de Castro, C. G.. Instituto Presbiteriano Mackenzie; BrasilFil: Raulin, J. P.. Instituto Presbiteriano Mackenzie; BrasilFil: Mandrini, Cristina Hemilse. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; ArgentinaFil: Kaufmann, Pierre. Instituto Presbiteriano Mackenzie; BrasilFil: Magun, A.. University of Berne; SuizaEDP Sciences2001-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/22477Giménez de Castro, C. G.; Raulin, J. P.; Mandrini, Cristina Hemilse; Kaufmann, Pierre; Magun, A.; Multi-resolution wavelet analysis of high time resolution millimeter wavelength observations of solar bursts; EDP Sciences; Astronomy and Astrophysics; 366; 1; 1-2001; 317-3250004-6361CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361:20000088info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2001/04/aa8452/aa8452.htmlinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:42:39Zoai:ri.conicet.gov.ar:11336/22477instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:42:39.782CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Multi-resolution wavelet analysis of high time resolution millimeter wavelength observations of solar bursts |
title |
Multi-resolution wavelet analysis of high time resolution millimeter wavelength observations of solar bursts |
spellingShingle |
Multi-resolution wavelet analysis of high time resolution millimeter wavelength observations of solar bursts Giménez de Castro, C. G. SOLAR FLARES SOLAR RADIO RADIATION SOLAR DATA ANALYSIS |
title_short |
Multi-resolution wavelet analysis of high time resolution millimeter wavelength observations of solar bursts |
title_full |
Multi-resolution wavelet analysis of high time resolution millimeter wavelength observations of solar bursts |
title_fullStr |
Multi-resolution wavelet analysis of high time resolution millimeter wavelength observations of solar bursts |
title_full_unstemmed |
Multi-resolution wavelet analysis of high time resolution millimeter wavelength observations of solar bursts |
title_sort |
Multi-resolution wavelet analysis of high time resolution millimeter wavelength observations of solar bursts |
dc.creator.none.fl_str_mv |
Giménez de Castro, C. G. Raulin, J. P. Mandrini, Cristina Hemilse Kaufmann, Pierre Magun, A. |
author |
Giménez de Castro, C. G. |
author_facet |
Giménez de Castro, C. G. Raulin, J. P. Mandrini, Cristina Hemilse Kaufmann, Pierre Magun, A. |
author_role |
author |
author2 |
Raulin, J. P. Mandrini, Cristina Hemilse Kaufmann, Pierre Magun, A. |
author2_role |
author author author author |
dc.subject.none.fl_str_mv |
SOLAR FLARES SOLAR RADIO RADIATION SOLAR DATA ANALYSIS |
topic |
SOLAR FLARES SOLAR RADIO RADIATION SOLAR DATA ANALYSIS |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
By means of the wavelet representation of multi-resolution analysis, we study millimeter wavelength (mm-w) radio solar bursts obtained at 48 GHz with high time resolution (<=8 ms); observed at Itapetinga (Brazil). The multi-resolution analysis decomposes the signal locally both in time and in frequency, allowing us to identify the different temporal structures which underlie the flux density time series and the transient phenomena characteristic of solar bursts. The analysis was applied to the flux time profile of four solar bursts observed at a mm-w, studying separately the pre-flare, impulsive and post-flare phases when possible. We find that a wide range of time scales contributes to the radio flux. The minimum time scale found for the impulsive phase is 32 ms, after which the noise dominates the emission; the maximum is 8 s. Pre- and post-flare phases have a minimum time scale of 256 ms and a maximum between 1 to 8 s. Multi-resolution ``spectral indexes'', which are a measure of the self-similar behavior of the signal, are in some cases bigger for the impulsive phase than for the pre- and post-flare phases. We find that as the flux becomes higher the contribution from shorter time scales is enhanced. Fil: Giménez de Castro, C. G.. Instituto Presbiteriano Mackenzie; Brasil Fil: Raulin, J. P.. Instituto Presbiteriano Mackenzie; Brasil Fil: Mandrini, Cristina Hemilse. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina Fil: Kaufmann, Pierre. Instituto Presbiteriano Mackenzie; Brasil Fil: Magun, A.. University of Berne; Suiza |
description |
By means of the wavelet representation of multi-resolution analysis, we study millimeter wavelength (mm-w) radio solar bursts obtained at 48 GHz with high time resolution (<=8 ms); observed at Itapetinga (Brazil). The multi-resolution analysis decomposes the signal locally both in time and in frequency, allowing us to identify the different temporal structures which underlie the flux density time series and the transient phenomena characteristic of solar bursts. The analysis was applied to the flux time profile of four solar bursts observed at a mm-w, studying separately the pre-flare, impulsive and post-flare phases when possible. We find that a wide range of time scales contributes to the radio flux. The minimum time scale found for the impulsive phase is 32 ms, after which the noise dominates the emission; the maximum is 8 s. Pre- and post-flare phases have a minimum time scale of 256 ms and a maximum between 1 to 8 s. Multi-resolution ``spectral indexes'', which are a measure of the self-similar behavior of the signal, are in some cases bigger for the impulsive phase than for the pre- and post-flare phases. We find that as the flux becomes higher the contribution from shorter time scales is enhanced. |
publishDate |
2001 |
dc.date.none.fl_str_mv |
2001-01 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/22477 Giménez de Castro, C. G.; Raulin, J. P.; Mandrini, Cristina Hemilse; Kaufmann, Pierre; Magun, A.; Multi-resolution wavelet analysis of high time resolution millimeter wavelength observations of solar bursts; EDP Sciences; Astronomy and Astrophysics; 366; 1; 1-2001; 317-325 0004-6361 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/22477 |
identifier_str_mv |
Giménez de Castro, C. G.; Raulin, J. P.; Mandrini, Cristina Hemilse; Kaufmann, Pierre; Magun, A.; Multi-resolution wavelet analysis of high time resolution millimeter wavelength observations of solar bursts; EDP Sciences; Astronomy and Astrophysics; 366; 1; 1-2001; 317-325 0004-6361 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361:20000088 info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2001/04/aa8452/aa8452.html |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
EDP Sciences |
publisher.none.fl_str_mv |
EDP Sciences |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1844614459680620544 |
score |
13.070432 |