\begin{thebibliography}{16}
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\ifx \citeauthoryear \undefined \def \citeauthoryear#1{#1} \fi
\def \endbibitem {}

\bibitem[\protect\citeauthoryear{{de La Lande}, {Wilson}, and
  {Maskelyne}}{1783}]{1783RSPT...73..144D}
\begin{barticle}
\bauthor{\bsnm{{de La Lande}},~\binits{M.}},
  \bauthor{\bsnm{{Wilson}},~\binits{A.}},
  \bauthor{\bsnm{{Maskelyne}},~\binits{N.}}:
\byear{1783}, \batitle{{An Answer to the Objections Stated by M. De la Lande,
  in the Memoirs of the French Academy for the Year 1776, against the Solar
  Spots Being Excavations in the Luminous Matter of the Sun, Together with a
  Short Examination of the Views Entertained by Him upon That Subject. By
  Alexander Wilson, M. D. Professor of Practical Astronomy in the University of
  Glasgow; Communicated by Nevil Maskelyne, D.D. F. R. S. and Astronomer
  Royal}}. \textit{\bjtitle{Philosophical Transactions Series I}}
  \textbf{\bvolume{73}}, \bfpage{144}\,--\,\blpage{168}.
\end{barticle}
\endbibitem

\bibitem[\protect\citeauthoryear{{Dicke}}{1970}]{1970ApJ...159....1D}
\begin{barticle}
\bauthor{\bsnm{{Dicke}},~\binits{R.H.}}:
\byear{1970}, \batitle{{The Solar Oblateness and the Gravitational Quadrupole
  Moment}}. \textit{\bjtitle{\apj}} \textbf{\bvolume{159}},
  \bfpage{1}\,--\,\blpage{+}.
\end{barticle}
\endbibitem

\bibitem[\protect\citeauthoryear{{Dicke} and
  {Goldenberg}}{1974}]{1974ApJS...27..131D}
\begin{barticle}
\bauthor{\bsnm{{Dicke}},~\binits{R.H.}},
  \bauthor{\bsnm{{Goldenberg}},~\binits{H.M.}}:
\byear{1974}, \batitle{{The oblateness of the sun}}. \textit{\bjtitle{\apjs}}
  \textbf{\bvolume{27}}, \bfpage{131}\,--\,\blpage{+}.
\end{barticle}
\endbibitem

\bibitem[\protect\citeauthoryear{{Egidi}
  \textit{et~al.}}{2006}]{2006SoPh..235..407E}
\begin{barticle}
\bauthor{\bsnm{{Egidi}},~\binits{A.}}, \bauthor{\bsnm{{Caccin}},~\binits{B.}},
  \bauthor{\bsnm{{Sofia}},~\binits{S.}}, \bauthor{\bsnm{{Heaps}},~\binits{W.}},
  \bauthor{\bsnm{{Hoegy}},~\binits{W.}}, \bauthor{\bsnm{{Twigg}},~\binits{L.}}:
\byear{2006}, \batitle{{High-Precision Measurements of the Solar Diameter and
  Oblateness by the Solar Disk Sextant (SDS) Experiment}}.
  \textit{\bjtitle{\solphys}} \textbf{\bvolume{235}},
  \bfpage{407}\,--\,\blpage{418}. \binterref{doi:10.1007/s11207-006-0073-x}.
\end{barticle}
\endbibitem

\bibitem[\protect\citeauthoryear{{Emilio}
  \textit{et~al.}}{2007}]{2007ApJ...660L.161E}
\begin{barticle}
\bauthor{\bsnm{{Emilio}},~\binits{M.}}, \bauthor{\bsnm{{Bush}},~\binits{R.I.}},
  \bauthor{\bsnm{{Kuhn}},~\binits{J.}},
  \bauthor{\bsnm{{Scherrer}},~\binits{P.}}:
\byear{2007}, \batitle{{A Changing Solar Shape}}. \textit{\bjtitle{\apjl}}
  \textbf{\bvolume{660}}, \bfpage{L161}\,--\,\blpage{L163}.
  \binterref{doi:10.1086/518212}.
\end{barticle}
\endbibitem

\bibitem[\protect\citeauthoryear{{Fivian}
  \textit{et~al.}}{2002}]{2002SoPh..210...87F}
\begin{barticle}
\bauthor{\bsnm{{Fivian}},~\binits{M.}},
  \bauthor{\bsnm{{Hemmeck}},~\binits{R.}},
  \bauthor{\bsnm{{Mchedlishvili}},~\binits{A.}},
  \bauthor{\bsnm{{Zehnder}},~\binits{A.}}:
\byear{2002}, \batitle{{RHESSI aspect reconstruction}}.
  \textit{\bjtitle{\solphys}} \textbf{\bvolume{210}},
  \bfpage{87}\,--\,\blpage{99}.
\end{barticle}
\endbibitem

\bibitem[\protect\citeauthoryear{{Fivian} \textit{et~al.}}{2007}]{nature}
\begin{botherref}
\oauthor{\bsnm{{Fivian}},~\binits{M.D.}},
  \oauthor{\bsnm{{Hudson}},~\binits{H.S.}},
  \oauthor{\bsnm{{Lin}},~\binits{R.P.}},
  \oauthor{\bsnm{{Zahid}},~\binits{H.J.}}:
2007, {Solar Shape Measurements from RHESSI: a Large Excess Oblateness}.
  \textit{Nature}, in press.
\end{botherref}
\endbibitem

\bibitem[\protect\citeauthoryear{{Hill}
  \textit{et~al.}}{1974}]{1974PhRvL..33.1497H}
\begin{barticle}
\bauthor{\bsnm{{Hill}},~\binits{H.A.}},
  \bauthor{\bsnm{{Clayton}},~\binits{P.D.}},
  \bauthor{\bsnm{{Patz}},~\binits{D.L.}},
  \bauthor{\bsnm{{Healy}},~\binits{A.W.}},
  \bauthor{\bsnm{{Stebbins}},~\binits{R.T.}},
  \bauthor{\bsnm{{Oleson}},~\binits{J.R.}},
  \bauthor{\bsnm{{Zanoni}},~\binits{C.A.}}:
\byear{1974}, \batitle{{Solar oblateness, excess brightness, and relativity}}.
  \textit{\bjtitle{Physical Review Letters}} \textbf{\bvolume{33}},
  \bfpage{1497}\,--\,\blpage{1500}.
\end{barticle}
\endbibitem

\bibitem[\protect\citeauthoryear{{Lin}
  \textit{et~al.}}{2002}]{2002SoPh..210....3L}
\begin{barticle}
\bauthor{\bsnm{{Lin}},~\binits{R.P.}},
  \bauthor{\bsnm{{Dennis}},~\binits{B.R.}},
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  \bauthor{\bsnm{{Smith}},~\binits{D.M.}},
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  \bauthor{\bsnm{{Pankow}},~\binits{D.}},
  \bauthor{\bsnm{{Turin}},~\binits{P.}},
  \bauthor{\bsnm{{Bester}},~\binits{M.}},
  \bauthor{\bsnm{{Csillaghy}},~\binits{A.}},
  \bauthor{\bsnm{{Lewis}},~\binits{M.}},
  \bauthor{\bsnm{{Madden}},~\binits{N.}}, \bauthor{\bsnm{{van
  Beek}},~\binits{H.F.}}, \bauthor{\bsnm{{Appleby}},~\binits{M.}},
  \bauthor{\bsnm{{Raudorf}},~\binits{T.}},
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  \bauthor{\bsnm{{Ramaty}},~\binits{R.}},
  \bauthor{\bsnm{{Schmahl}},~\binits{E.}},
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  \bauthor{\bsnm{{Krucker}},~\binits{S.}},
  \bauthor{\bsnm{{Abiad}},~\binits{R.}}, \bauthor{\bsnm{{Quinn}},~\binits{T.}},
  \bauthor{\bsnm{{Berg}},~\binits{P.}}, \bauthor{\bsnm{{Hashii}},~\binits{M.}},
  \bauthor{\bsnm{{Sterling}},~\binits{R.}},
  \bauthor{\bsnm{{Jackson}},~\binits{R.}},
  \bauthor{\bsnm{{Pratt}},~\binits{R.}},
  \bauthor{\bsnm{{Campbell}},~\binits{R.D.}},
  \bauthor{\bsnm{{Malone}},~\binits{D.}},
  \bauthor{\bsnm{{Landis}},~\binits{D.}},
  \bauthor{\bsnm{{Barrington-Leigh}},~\binits{C.P.}},
  \bauthor{\bsnm{{Slassi-Sennou}},~\binits{S.}},
  \bauthor{\bsnm{{Cork}},~\binits{C.}}, \bauthor{\bsnm{{Clark}},~\binits{D.}},
  \bauthor{\bsnm{{Amato}},~\binits{D.}}, \bauthor{\bsnm{{Orwig}},~\binits{L.}},
  \bauthor{\bsnm{{Boyle}},~\binits{R.}},
  \bauthor{\bsnm{{Banks}},~\binits{I.S.}},
  \bauthor{\bsnm{{Shirey}},~\binits{K.}},
  \bauthor{\bsnm{{Tolbert}},~\binits{A.K.}},
  \bauthor{\bsnm{{Zarro}},~\binits{D.}}, \bauthor{\bsnm{{Snow}},~\binits{F.}},
  \bauthor{\bsnm{{Thomsen}},~\binits{K.}},
  \bauthor{\bsnm{{Henneck}},~\binits{R.}},
  \bauthor{\bsnm{{Mchedlishvili}},~\binits{A.}},
  \bauthor{\bsnm{{Ming}},~\binits{P.}}, \bauthor{\bsnm{{Fivian}},~\binits{M.}},
  \bauthor{\bsnm{{Jordan}},~\binits{J.}},
  \bauthor{\bsnm{{Wanner}},~\binits{R.}},
  \bauthor{\bsnm{{Crubb}},~\binits{J.}},
  \bauthor{\bsnm{{Preble}},~\binits{J.}},
  \bauthor{\bsnm{{Matranga}},~\binits{M.}},
  \bauthor{\bsnm{{Benz}},~\binits{A.}}, \bauthor{\bsnm{{Hudson}},~\binits{H.}},
  \bauthor{\bsnm{{Canfield}},~\binits{R.C.}},
  \bauthor{\bsnm{{Holman}},~\binits{G.D.}},
  \bauthor{\bsnm{{Crannell}},~\binits{C.}},
  \bauthor{\bsnm{{Kosugi}},~\binits{T.}},
  \bauthor{\bsnm{{Emslie}},~\binits{A.G.}},
  \bauthor{\bsnm{{Vilmer}},~\binits{N.}},
  \bauthor{\bsnm{{Brown}},~\binits{J.C.}},
  \bauthor{\bsnm{{Johns-Krull}},~\binits{C.}},
  \bauthor{\bsnm{{Aschwanden}},~\binits{M.}},
  \bauthor{\bsnm{{Metcalf}},~\binits{T.}},
  \bauthor{\bsnm{{Conway}},~\binits{A.}}:
\byear{2002}, \batitle{{The Reuven Ramaty High-Energy Solar Spectroscopic
  Imager (RHESSI)}}. \textit{\bjtitle{\solphys}} \textbf{\bvolume{210}},
  \bfpage{3}\,--\,\blpage{32}.
\end{barticle}
\endbibitem

\bibitem[\protect\citeauthoryear{{Lites}
  \textit{et~al.}}{2004}]{2004SoPh..221...65L}
\begin{barticle}
\bauthor{\bsnm{{Lites}},~\binits{B.W.}},
  \bauthor{\bsnm{{Scharmer}},~\binits{G.B.}},
  \bauthor{\bsnm{{Berger}},~\binits{T.E.}},
  \bauthor{\bsnm{{Title}},~\binits{A.M.}}:
\byear{2004}, \batitle{{Three-Dimensional Structure of the Active Region
  Photosphere as Revealed by High Angular Resolution}}.
  \textit{\bjtitle{\solphys}} \textbf{\bvolume{221}},
  \bfpage{65}\,--\,\blpage{84}.
  \binterref{doi:10.1023/B:SOLA.0000033355.24845.5a}.
\end{barticle}
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\bibitem[\protect\citeauthoryear{{Schatten}
  \textit{et~al.}}{1986}]{1986ApJ...311..460S}
\begin{barticle}
\bauthor{\bsnm{{Schatten}},~\binits{K.H.}},
  \bauthor{\bsnm{{Mayr}},~\binits{H.G.}},
  \bauthor{\bsnm{{Omidvar}},~\binits{K.}},
  \bauthor{\bsnm{{Maier}},~\binits{E.}}:
\byear{1986}, \batitle{{A hillock and cloud model for faculae}}.
  \textit{\bjtitle{\apj}} \textbf{\bvolume{311}},
  \bfpage{460}\,--\,\blpage{473}. \binterref{doi:10.1086/164786}.
\end{barticle}
\endbibitem

\bibitem[\protect\citeauthoryear{{Solanki}}{2003}]{2003A&ARv..11..153S}
\begin{barticle}
\bauthor{\bsnm{{Solanki}},~\binits{S.K.}}:
\byear{2003}, \batitle{{Sunspots: An overview}}. \textit{\bjtitle{\aapr}}
  \textbf{\bvolume{11}}, \bfpage{153}\,--\,\blpage{286}.
  \binterref{doi:10.1007/s00159-003-0018-4}.
\end{barticle}
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\bibitem[\protect\citeauthoryear{{Steiner}}{2005}]{2005A&A...430..691S}
\begin{barticle}
\bauthor{\bsnm{{Steiner}},~\binits{O.}}:
\byear{2005}, \batitle{{Radiative properties of magnetic elements. II. Center
  to limb variation of the appearance of photospheric faculae}}.
  \textit{\bjtitle{\aap}} \textbf{\bvolume{430}},
  \bfpage{691}\,--\,\blpage{700}. \binterref{doi:10.1051/0004-6361:20041286}.
\end{barticle}
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\bibitem[\protect\citeauthoryear{{Thompson}
  \textit{et~al.}}{2003}]{2003ARA&A..41..599T}
\begin{barticle}
\bauthor{\bsnm{{Thompson}},~\binits{M.J.}},
  \bauthor{\bsnm{{Christensen-Dalsgaard}},~\binits{J.}},
  \bauthor{\bsnm{{Miesch}},~\binits{M.S.}},
  \bauthor{\bsnm{{Toomre}},~\binits{J.}}:
\byear{2003}, \batitle{{The internal rotation of the sun}}.
  \textit{\bjtitle{\araa}} \textbf{\bvolume{41}},
  \bfpage{599}\,--\,\blpage{643}.
\end{barticle}
\endbibitem

\bibitem[\protect\citeauthoryear{{Withbroe}}{2006}]{2006SoPh..235..369W}
\begin{barticle}
\bauthor{\bsnm{{Withbroe}},~\binits{G.L.}}:
\byear{2006}, \batitle{{Quiet Sun Contribution to Variations in the Total Solar
  Irradiance}}. \textit{\bjtitle{\solphys}} \textbf{\bvolume{235}},
  \bfpage{369}\,--\,\blpage{386}. \binterref{doi:10.1007/s11207-006-0070-0}.
\end{barticle}
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\bibitem[\protect\citeauthoryear{{Zehnder}
  \textit{et~al.}}{2003}]{2003SPIE.4853...41Z}
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2003, {RHESSI imager and aspect systems}. In: \textit{Innovative Telescopes and
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\end{thebibliography}
