View in EDS PDF Full Text

Detection of Emerging Sunspot Regions in the Solar Interior.

Saved in:
Bibliographic Details
Title: Detection of Emerging Sunspot Regions in the Solar Interior.
Authors: Ilonidis, Stathis, Junwei Zhao, Kosovichev, Alexander
Source: Science (pre-March 2025). 8/19/2011, Vol. 333 Issue 6045, p993-996. 4p.
Subjects: Astrophysics research, Astronomical observations, Solar magnetic fields, Sunspots, Solar interior, Sun
Abstract: Sunspots are regions where strong magnetic fields emerge from the solar interior and where major eruptive events occur. These energetic events can cause power outages, interrupt telecommunication and navigation services, and pose hazards to astronauts. We detected subsurface signatures of emerging sunspot regions before they appeared on the solar disc. Strong acoustic travel-time anomalies of an order of 12 to 16 seconds were detected as deep as 65,000 kilometers. These anomalies were associated with magnetic structures that emerged with an average speed of 0.3 to 0.6 kilometer per second and caused high peaks in the photospheric magnetic flux rate 1 to 2 days after the detection of the anomalies. Thus, synoptic imaging of subsurface magnetic activity may allow anticipation of large sunspot regions before they become visible, improving space weather forecast. [ABSTRACT FROM AUTHOR]
Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
FullText Links:
  – Type: pdflink
Text:
  Availability: 0
Header DbId: pbh
DbLabel: Psychology and Behavioral Sciences Collection
An: 65317612
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Detection of Emerging Sunspot Regions in the Solar Interior.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Ilonidis%2C+Stathis%22">Ilonidis, Stathis</searchLink><br /><searchLink fieldCode="AR" term="%22Junwei+Zhao%22">Junwei Zhao</searchLink><br /><searchLink fieldCode="AR" term="%22Kosovichev%2C+Alexander%22">Kosovichev, Alexander</searchLink>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Science+%28pre-March+2025%29%22">Science (pre-March 2025)</searchLink>. 8/19/2011, Vol. 333 Issue 6045, p993-996. 4p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Astrophysics+research%22">Astrophysics research</searchLink><br /><searchLink fieldCode="DE" term="%22Astronomical+observations%22">Astronomical observations</searchLink><br /><searchLink fieldCode="DE" term="%22Solar+magnetic+fields%22">Solar magnetic fields</searchLink><br /><searchLink fieldCode="DE" term="%22Sunspots%22">Sunspots</searchLink><br /><searchLink fieldCode="DE" term="%22Solar+interior%22">Solar interior</searchLink><br /><searchLink fieldCode="DE" term="%22Sun%22">Sun</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Sunspots are regions where strong magnetic fields emerge from the solar interior and where major eruptive events occur. These energetic events can cause power outages, interrupt telecommunication and navigation services, and pose hazards to astronauts. We detected subsurface signatures of emerging sunspot regions before they appeared on the solar disc. Strong acoustic travel-time anomalies of an order of 12 to 16 seconds were detected as deep as 65,000 kilometers. These anomalies were associated with magnetic structures that emerged with an average speed of 0.3 to 0.6 kilometer per second and caused high peaks in the photospheric magnetic flux rate 1 to 2 days after the detection of the anomalies. Thus, synoptic imaging of subsurface magnetic activity may allow anticipation of large sunspot regions before they become visible, improving space weather forecast. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=pbh&AN=65317612
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1126/science.1206253
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 4
        StartPage: 993
    Subjects:
      – SubjectFull: Astrophysics research
        Type: general
      – SubjectFull: Astronomical observations
        Type: general
      – SubjectFull: Solar magnetic fields
        Type: general
      – SubjectFull: Sunspots
        Type: general
      – SubjectFull: Solar interior
        Type: general
      – SubjectFull: Sun
        Type: general
    Titles:
      – TitleFull: Detection of Emerging Sunspot Regions in the Solar Interior.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Ilonidis, Stathis
      – PersonEntity:
          Name:
            NameFull: Junwei Zhao
      – PersonEntity:
          Name:
            NameFull: Kosovichev, Alexander
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 19
              M: 08
              Text: 8/19/2011
              Type: published
              Y: 2011
          Identifiers:
            – Type: issn-print
              Value: 00368075
          Numbering:
            – Type: volume
              Value: 333
            – Type: issue
              Value: 6045
          Titles:
            – TitleFull: Science (pre-March 2025)
              Type: main
ResultId 1