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1. Identity statement
Reference TypeJournal Article
Sitemarte3.sid.inpe.br
Holder Codeisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identifier6qtX3pFwXQZ3r59YCT/H3Vgf
Repositorysid.inpe.br/iris@1905/2005/08.04.10.09   (restricted access)
Last Update2013:04.03.12.17.58 (UTC) jefferson
Metadata Repositorysid.inpe.br/iris@1905/2005/08.04.10.09.42
Metadata Last Update2018:06.06.03.56.41 (UTC) administrator
Secondary KeyINPE-8444-PRE/4212
ISSN0273-1177
Label9421
Citation KeyFernandesSawMelBenKan:2000:InAcRe
TitleInvestigations of the accelaration region of energetic electrons asociated with decimetry type III and X-ray bursts
Year2000
Secondary Date20011105
Access Date2024, May 02
Secondary TypePRE PI
Number of Files1
Size3485 KiB
2. Context
Author1 Fernandes, Francisco Carlos Rocha
2 Sawant, Hanumant Shankar
3 Melendez, J. L.
4 Benz, A. O.
5 Kane, S. R.
Group1 DAE-INPE-MCT-BR
2 DAE-INPE-MCT-BR
3
4
5 DGE-INPE-MCT-BR
JournalAdvances in Space Research
Volume25
Number9
Pages1813-1816
History (UTC)2013-04-03 12:17:26 :: administrator -> jefferson :: 2000
2013-04-03 12:17:59 :: jefferson -> administrator :: 2000
2018-06-06 03:56:41 :: administrator -> marciana :: 2000
3. Content and structure
Is the master or a copy?is the master
Content Stagecompleted
Transferable1
Content TypeExternal Contribution
Version Typepublisher
KeywordsGEOSTROFÍSICA
explosões radio
flares solares
aceleração
cromosfera
radio x duro
fotosfera
accelaration
chromosphere
hard x ray
photosphere
AbstractPreliminary results of the association between type III decimetric bursts, mainly having center frequency above 1000 MHz and recorded by Phoenix radio spectrometer, and seven hard X-ray flares observed by the Yohkoh/HXT from September, 1992 to October, 1993 are reported here. (a)For an assumed improved density model of the solar chromosphere, an average electron beam velocity (similar to 0.16 c)and hence an average electron energy (similar to 7 keV)was inferred from the average frequency drift rate (similar to 1350 MHz/s)of 160 isolated type III bursts. Assuming the electrons lose energy primarily by collisions, the height of injection of the energetic electrons was estimated (1.2 x 10(9)- 4.5 x 10(9)cm). (b)In two flares at the onset of the bursts, the correlation between X-rays and radio was better at lower frequencies (less than or equal to 500 MHz). However, during the time evolution of those flares, the correlation improved for higher and higher frequencies (greater than or equal to 800 MHz), suggesting that the acceleration region was displaced towards the photosphere. The estimated velocity of the acceleration region is similar to 3 x 10(3)- 8 x 10(3)km/s. (c)In two flares, the enhancement of the radio decimetric emission above 500 MHz started earlier (similar to 10 s)than the X-ray emissions, suggesting in case of these two flares that the acceleration region is located near to where the decimetric emission is generated.
AreaCEA
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4. Conditions of access and use
Languageen
Target File1-s2.0-S0273117799006171-main.pdf
User Groupadministrator
jefferson
Visibilityshown
Archiving Policydenypublisher denyfinaldraft24
Read Permissiondeny from all and allow from 150.163
Update Permissionnot transferred
5. Allied materials
Next Higher Units8JMKD3MGPCW/3ETL868
8JMKD3MGPCW/3EU29DP
DisseminationWEBSCI; PORTALCAPES; MGA; COMPENDEX.
Host Collectionsid.inpe.br/banon/2001/04.03.15.36
6. Notes
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7. Description control
e-Mail (login)marciana
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