| 1. Identity statement | ||||
| Reference Type | Conference Paper (Conference Proceedings) | |||
| Site | mtc-m21d.sid.inpe.br | |||
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S | |||
| Identifier | 8JMKD3MGP3W34T/47A6MTP | |||
| Repository | sid.inpe.br/mtc-m21d/2022/07.18.17.32 | |||
| Last Update | 2022:07.18.17.32.01 (UTC) simone | |||
| Metadata Repository | sid.inpe.br/mtc-m21d/2022/07.18.17.32.01 | |||
| Metadata Last Update | 2023:01.03.16.46.10 (UTC) administrator | |||
| Secondary Key | INPE--PRE/ | |||
| Citation Key | BarbosaSilvCost:2022:StRoGy | |||
| Title | Study of the role of the gyroresonance emission mechanism in the brightness intensification at 17 GHz of solar active regions  | |||
| Format | On-line | |||
| Year | 2022 | |||
| Access Date | 2024, May 14 | |||
| Secondary Type | PRE CI | |||
| Number of Files | 1 | |||
| Size | 84 KiB | |||
| 2. Context | ||||
| Author | 1 Barbosa, Abimael Amaro Xavier 2 Silva, Marlos Rockenbach da 3 Costa, Joaquim Eduardo Rezende | |||
| Resume Identifier | 1 2 3 8JMKD3MGP5W/3C9JHF8 | |||
| Group | 1 DIHPA-CGCE-INPE-MCTI-GOV-BR 2 DIHPA-CGCE-INPE-MCTI-GOV-BR 3 DICEP-CGCE-INPE-MCTI-GOV-BR | |||
| Affiliation | 1 Instituto Nacional de Pesquisas Espaciais (INPE) 2 Instituto Nacional de Pesquisas Espaciais (INPE) 3 Instituto Nacional de Pesquisas Espaciais (INPE) | |||
| Author e-Mail Address | 1 abimael.amaro.1984@gmail.com 2 marlos.silva@inpe.br 3 joaquim.costa@inpe.br | |||
| Conference Name | COSPAR Scientific Assembly, 44 | |||
| Conference Location | Athens, Greece | |||
| Date | 16-24 July 2022 | |||
| History (UTC) | 2022-12-20 11:53:12 :: simone -> administrator :: 2022 2023-01-03 16:46:10 :: administrator -> simone :: 2022 | |||
| 3. Content and structure | ||||
| Is the master or a copy? | is the master | |||
| Content Stage | completed | |||
| Transferable | 1 | |||
| Content Type | External Contribution | |||
| Version Type | publisher | |||
| Abstract | Associated with magnetic fields between the chromosphere and the corona, specifically in active regions, gyroresonance emission plays an important role in revealing the magnetic dynamics in such layers. This category of radio emission originates in the acceleration of thermally distributed electrons that spiral magnetic field lines. Then, given the magnetic association of this radiation, this work hypothesized the possible relationship of the gyroresonance mechanism with brightness bumps at radio frequencies. Such hypothesis was based on the control played by the magnetic field on the radio emission when such field reaches conditions conducive to gyroresonant radiation at given frequency and harmonic. To test such a hypothesis, we selected and observed 8 active regions from the ascending phase of the 24th solar cycle. In this analysis, the data for these regions were HMI magnetograms from the Solar Dynamics Observatory (SDO) and images at 17 GHz from the Nobeyama Radioheliograph (NoRH). Although these magnetograms map only photospheric magnetic fields, they are useful for indicating where the intensity of these fields approaches values associated with the gyroresonant mechanism for a given frequency and harmonic of the radio emission. For each active region, then, we compiled both the SDO and NoRH maps of the same time and analyzed its magnetic field and brightness temperature. We then observed that the magnetic field conducive to the gyroresonance mechanism was partially or completely enveloped by the brightness bumps at 17 GHz. Furthermore, we also observed that most of these bumps had circular polarization modulus (jrCj) above 30% and that the brightness temperature of the selected active regions was strongly correlated with jrCj 30% while it was weakly or moderately correlated with jrCj < 30%. The results of this work therefore support the proposed hypothesis, which makes brightness bumps at 17 GHz useful means of identifying gyroresonance sources. | |||
| Area | CEA | |||
| Arrangement | urlib.net > BDMCI > Fonds > Produção a partir de 2021 > CGCE > Study of the... | |||
| doc Directory Content | access | |||
| source Directory Content | there are no files | |||
| agreement Directory Content |
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| 4. Conditions of access and use | ||||
| data URL | http://mtc-m21d.sid.inpe.br/ibi/8JMKD3MGP3W34T/47A6MTP | |||
| zipped data URL | http://mtc-m21d.sid.inpe.br/zip/8JMKD3MGP3W34T/47A6MTP | |||
| Language | en | |||
| Target File | D2.3-0040-22-oral.pdf | |||
| User Group | simone | |||
| Reader Group | administrator simone | |||
| Visibility | shown | |||
| Update Permission | not transferred | |||
| 5. Allied materials | ||||
| Next Higher Units | 8JMKD3MGPCW/46KTFK8 | |||
| Citing Item List | sid.inpe.br/mtc-m21/2012/07.13.14.51.06 4 | |||
| Host Collection | urlib.net/www/2021/06.04.03.40 | |||
| 6. Notes | ||||
| Empty Fields | archivingpolicy archivist booktitle callnumber copyholder copyright creatorhistory descriptionlevel dissemination doi e-mailaddress edition editor isbn issn keywords label lineage mark mirrorrepository nextedition notes numberofvolumes orcid organization pages parameterlist parentrepositories previousedition previouslowerunit progress project publisher publisheraddress readpermission rightsholder schedulinginformation secondarydate secondarymark serieseditor session shorttitle sponsor subject tertiarymark tertiarytype type url volume | |||
| 7. Description control | ||||
| e-Mail (login) | simone | |||
| update | ||||