Low-frequency, low-degree solar p-mode properties from 22 years of birmingham solar oscillations network data

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@article{236ada13a2b94652a8ca98c1c55327fe,
title = "Low-frequency, low-degree solar p-mode properties from 22 years of birmingham solar oscillations network data",
abstract = "The solar low-degree low-frequency modes of oscillation are of particular interest as their frequencies can be measured with very high precision and hence provide good constraints on seismic models. Here we detect and characterize these valuable measures of the solar interior from a 22 yr Birmingham Solar Oscillations Network data set. We report mode frequencies, line widths, heights, amplitudes, and rotational splitting, all with robust uncertainties. The new values of frequency, rotational splitting, amplitude, and line width we provide will help place new constraints on hydrostatic and rotational structure, plus diagnostics of near-surface convection. Further to this, by assuming simple power laws, we extrapolate mode properties to lower frequencies.We demonstrate that the low-l low-frequency p modes have a low signalto-noise ratio and that this cannot be overcome simply by continued observation. It will be necessary to observe the Sun in novel ways to 'beat' the intrinsic granulation noise.",
keywords = "Methods: data analysis, Sun: helioseismology, Sun: oscillations",
author = "Guy Davies and Broomhall, {A. M.} and Chaplin, {W. J.} and Y. Elsworth and Steven Hale",
year = "2014",
month = apr,
day = "1",
doi = "10.1093/mnras/stu080",
language = "English",
volume = "439",
pages = "2025--2032",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "SIPRI/Oxford University Press",
number = "2",

}

RIS

TY - JOUR

T1 - Low-frequency, low-degree solar p-mode properties from 22 years of birmingham solar oscillations network data

AU - Davies, Guy

AU - Broomhall, A. M.

AU - Chaplin, W. J.

AU - Elsworth, Y.

AU - Hale, Steven

PY - 2014/4/1

Y1 - 2014/4/1

N2 - The solar low-degree low-frequency modes of oscillation are of particular interest as their frequencies can be measured with very high precision and hence provide good constraints on seismic models. Here we detect and characterize these valuable measures of the solar interior from a 22 yr Birmingham Solar Oscillations Network data set. We report mode frequencies, line widths, heights, amplitudes, and rotational splitting, all with robust uncertainties. The new values of frequency, rotational splitting, amplitude, and line width we provide will help place new constraints on hydrostatic and rotational structure, plus diagnostics of near-surface convection. Further to this, by assuming simple power laws, we extrapolate mode properties to lower frequencies.We demonstrate that the low-l low-frequency p modes have a low signalto-noise ratio and that this cannot be overcome simply by continued observation. It will be necessary to observe the Sun in novel ways to 'beat' the intrinsic granulation noise.

AB - The solar low-degree low-frequency modes of oscillation are of particular interest as their frequencies can be measured with very high precision and hence provide good constraints on seismic models. Here we detect and characterize these valuable measures of the solar interior from a 22 yr Birmingham Solar Oscillations Network data set. We report mode frequencies, line widths, heights, amplitudes, and rotational splitting, all with robust uncertainties. The new values of frequency, rotational splitting, amplitude, and line width we provide will help place new constraints on hydrostatic and rotational structure, plus diagnostics of near-surface convection. Further to this, by assuming simple power laws, we extrapolate mode properties to lower frequencies.We demonstrate that the low-l low-frequency p modes have a low signalto-noise ratio and that this cannot be overcome simply by continued observation. It will be necessary to observe the Sun in novel ways to 'beat' the intrinsic granulation noise.

KW - Methods: data analysis

KW - Sun: helioseismology

KW - Sun: oscillations

UR - http://www.scopus.com/inward/record.url?scp=84897069454&partnerID=8YFLogxK

U2 - 10.1093/mnras/stu080

DO - 10.1093/mnras/stu080

M3 - Article

AN - SCOPUS:84897069454

VL - 439

SP - 2025

EP - 2032

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 2

ER -