New IRIS constraints on the solar core rotation

L. Gizon; E. Fossat; M. Lazrek; A. Cacciani; S. Ehgamberdiev; B. Gelly; G. Grec; J. T. Hoeksema; S. Kahlikov; P. L. Pallé; A. Pantel; C. Régulo; F. X. Schmider; P. R. Wilson

New IRIS constraints on the solar core rotation

L. Gizon, E. Fossat, M. Lazrek, A. Cacciani, S. Ehgamberdiev, B. Gelly, G. Grec, J. T. Hoeksema, S. Kahlikov, P. L. Pallé, A. Pantel, C. Régulo, F. X. Schmider, P. R. Wilson

Center for Space Science

Research output: Contribution to journal › Article › peer-review

Abstract

Four time series of IRIS data (4 to 6 months) have been used to obtain improved measurements of the low degree (ℓ = 1, 2, 3) rotational splitting frequencies. Assuming that the rotation law is known in the outer layers of the Sun, we investigate the implications of IRIS splittings for the central regions. Both a one-shell and a two-shell rotation model have been considered in the solar core. A core rotating slightly faster than the outer radiative envelope provides the best fit to the data. Some evidence for the reliability of the observations is shown by the visibility of differential rotation in the ℜ = 3 multiplets.

Original language	English (US)
Pages (from-to)	L71-L74
Journal	Astronomy and Astrophysics
Volume	317
Issue number	2
State	Published - Jan 10 1997

Keywords

Sun: interior
Sun: oscillations
Sun: rotation

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Cite this

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title = "New IRIS constraints on the solar core rotation",

abstract = "Four time series of IRIS data (4 to 6 months) have been used to obtain improved measurements of the low degree (ℓ = 1, 2, 3) rotational splitting frequencies. Assuming that the rotation law is known in the outer layers of the Sun, we investigate the implications of IRIS splittings for the central regions. Both a one-shell and a two-shell rotation model have been considered in the solar core. A core rotating slightly faster than the outer radiative envelope provides the best fit to the data. Some evidence for the reliability of the observations is shown by the visibility of differential rotation in the ℜ = 3 multiplets.",

keywords = "Sun: interior, Sun: oscillations, Sun: rotation",

author = "L. Gizon and E. Fossat and M. Lazrek and A. Cacciani and S. Ehgamberdiev and B. Gelly and G. Grec and Hoeksema, {J. T.} and S. Kahlikov and Pall{\'e}, {P. L.} and A. Pantel and C. R{\'e}gulo and Schmider, {F. X.} and Wilson, {P. R.}",

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language = "English (US)",

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TY - JOUR

T1 - New IRIS constraints on the solar core rotation

AU - Gizon, L.

AU - Fossat, E.

AU - Lazrek, M.

AU - Cacciani, A.

AU - Ehgamberdiev, S.

AU - Gelly, B.

AU - Grec, G.

AU - Hoeksema, J. T.

AU - Kahlikov, S.

AU - Pallé, P. L.

AU - Pantel, A.

AU - Régulo, C.

AU - Schmider, F. X.

AU - Wilson, P. R.

PY - 1997/1/10

Y1 - 1997/1/10

N2 - Four time series of IRIS data (4 to 6 months) have been used to obtain improved measurements of the low degree (ℓ = 1, 2, 3) rotational splitting frequencies. Assuming that the rotation law is known in the outer layers of the Sun, we investigate the implications of IRIS splittings for the central regions. Both a one-shell and a two-shell rotation model have been considered in the solar core. A core rotating slightly faster than the outer radiative envelope provides the best fit to the data. Some evidence for the reliability of the observations is shown by the visibility of differential rotation in the ℜ = 3 multiplets.

AB - Four time series of IRIS data (4 to 6 months) have been used to obtain improved measurements of the low degree (ℓ = 1, 2, 3) rotational splitting frequencies. Assuming that the rotation law is known in the outer layers of the Sun, we investigate the implications of IRIS splittings for the central regions. Both a one-shell and a two-shell rotation model have been considered in the solar core. A core rotating slightly faster than the outer radiative envelope provides the best fit to the data. Some evidence for the reliability of the observations is shown by the visibility of differential rotation in the ℜ = 3 multiplets.

KW - Sun: interior

KW - Sun: oscillations

KW - Sun: rotation

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M3 - Article

AN - SCOPUS:0002508887

SN - 0004-6361

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JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

IS - 2

ER -

New IRIS constraints on the solar core rotation

Abstract

Keywords

ASJC Scopus subject areas

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