| 1. Identity statement | |
| Reference Type | Journal Article |
| Site | mtc-m16.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identifier | 6qtX3pFwXQZGivnJVY/M2Gao |
| Repository | sid.inpe.br/mtc-m16@80/2006/08.02.13.46 (restricted access) |
| Last Update | 2006:08.02.13.46.27 (UTC) administrator |
| Metadata Repository | sid.inpe.br/mtc-m16@80/2006/08.02.13.46.28 |
| Metadata Last Update | 2021:07.18.04.01.22 (UTC) administrator |
| Secondary Key | INPE-13938--PRE/9118 |
| ISSN | 1364-6826 |
| Citation Key | RaulinPacKauCorMar:2006:DeSoXr |
| Title | On the detectability of solar X-ray flares using very low frequency sudden phase anomalies  |
| Year | 2006 |
| Month | June |
| Access Date | 2024, May 02 |
| Secondary Type | PRE PI |
| Number of Files | 1 |
| Size | 393 KiB |
| 2. Context | |
| Author | 1 Raulin, Jean-Pierre 2 Pacini, Alessandra Abe 3 Kaufmann, Pierre 4 Correia, Emília 5 Martinez, Maria Aparecida G. |
| Resume Identifier | 1 2 3 4 8JMKD3MGP5W/3C9JH2C |
| Group | 1 2 DAS-INPE-MCT-BR 3 4 DAS-INPE-MCT-BR |
| Affiliation | 1 Centro de Rádio Astronomia e Astrofísica Mackenzie, Universidade Presbiteriana Mackenzie 2 Instituto Nacional de Pesquisas Espaciais, Divisão de Astrofísica (INPE.DAS) 3 Centro de Rádio Astronomia e Astrofísica Mackenzie, Universidade Presbiteriana Mackenzie 4 Instituto Nacional de Pesquisas Espaciais, Divisão de Astrofísica (INPE.DAS) 5 Programa de Pós-graduação em Engenharia Elétrica, Universidade Presbiteriana Mackenzie |
| Journal | Journal of Atmospheric and Solar-Terrestrial Physics |
| Volume | 68 |
| Number | 9 |
| Pages | 1029-1035 |
| History (UTC) | 2006-08-02 13:46:28 :: simone -> administrator :: 2021-07-18 04:01:22 :: administrator -> marciana :: 2006 |
| 3. Content and structure | |
| Is the master or a copy? | is the master |
| Content Stage | completed |
| Transferable | 1 |
| Content Type | External Contribution |
| Keywords | Solar flares X-rays Ionosphere Solar activity cycle Very low frequency propagation |
| Abstract | We have studied ionization excesses produced by enhancements of X-ray emission during solar flares using the very low frequency (VLF) response of the lower edge of the ionospheric D region. We focus on whether or not the X-rays associated with a given solar flare were responsible for a sudden phase anomaly (SPA) event, independently of the characteristics of the SPA. Approximately 1300 and 200 solar events were found to cause an ionospheric event, during periods of high and low solar activity, respectively. The main results of the present work are: (i) definite spectral characteristics are required for a solar flare to produce a measurable SPA; (ii) the probability of SPA occurrence due to faint solar flares, of X-ray class C1C2 or lower, is higher during solar minimum; (iii) the same probability for more intense solar flares (class C3 or higher) does not depend on the solar activity conditions. Our observations suggest that the low ionosphere has different sensitivities depending on the solar activity, being more sensitive when the Sun is less active. These results also constitute an observational confirmation of recent findings showing that the ionospheric reference height is lower (by about 1 km) during solar maximum. |
| Area | CEA |
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDAS > On the detectability... |
| doc Directory Content | access |
| source Directory Content | there are no files |
| agreement Directory Content | there are no files |
| 4. Conditions of access and use | |
| Language | en |
| Target File | On the detectability of solar x ray.pdf |
| User Group | administrator simone |
| Visibility | shown |
| Copy Holder | SID/SCD |
| Archiving Policy | denypublisher denyfinaldraft24 |
| Read Permission | deny from all and allow from 150.163 |
| 5. Allied materials | |
| Next Higher Units | 8JMKD3MGPCW/3ETR8EH |
| Dissemination | WEBSCI; PORTALCAPES; AGU; MGA; COMPENDEX. |
| Host Collection | sid.inpe.br/banon/2003/08.15.17.40 |
| 6. Notes | |
| Empty Fields | alternatejournal archivist callnumber copyright creatorhistory descriptionlevel documentstage doi e-mailaddress electronicmailaddress format isbn label lineage mark mirrorrepository nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress project readergroup rightsholder schedulinginformation secondarydate secondarymark session shorttitle sponsor subject tertiarymark tertiarytype typeofwork url versiontype |
| 7. Description control | |
| e-Mail (login) | marciana |
| update | |