Does Solar Structure Vary with Solar Magnetic Activity? | Zendy

Sarbani Basu | Zendy; Anna Mandel | Zendy

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Does Solar Structure Vary with Solar Magnetic Activity?

Author(s) -

Sarbani Basu,

Anna Mandel

Publication year - 2004

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/427435

Subject(s) - adiabatic process , ionization , physics , helioseismology , computational physics , helium , mode (computer interface) , atmospheric sciences , magnetic field , atomic physics , ion , thermodynamics , computer science , quantum mechanics , operating system

We present evidence that solar structure changes with changes in solaractivity. We find that the adiabatic index, Gamma_1, changes near the secondhelium ionization, i.e., at a depth of about 0.98 R_sun. We believe that thischange is a result of the change in the effective equation of state caused bymagnetic fields. Inversions should be able to detect the changes in Gamma_1 ifmode sets with reliable and precise high-degree modes are available.Comment: To appear in ApJ Letter

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