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<h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Solar Flux Unit</span></h1>
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<div id="mw-content-text" class="mw-body-content mw-content-ltr" lang="de" dir="ltr"><div class="mw-content-ltr mw-parser-output" lang="de" dir="ltr"><p>Die <b>Solar Flux Unit</b> (<a href="Einheitenzeichen" title="Einheitenzeichen">Einheitenzeichen</a>: <b>sfu</b>) ist neben dem <a href="Jansky" title="Jansky">Jansky</a> (<span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \mathrm {Jy} }">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mrow class="MJX-TeXAtom-ORD">
<mi mathvariant="normal">J</mi>
<mi mathvariant="normal">y</mi>
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</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle \mathrm {Jy} }</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/9e93a173090b8d997c13a265d0dbc3e8883d85c5.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:2.422ex; height:2.509ex;" alt="{\displaystyle \mathrm {Jy} }" loading="lazy"></span>) eine gebräuchliche Einheit der <a href="Radioastronomie" title="Radioastronomie">Radioastronomie</a> für die spektrale <a href="Flussdichte" title="Flussdichte">Flussdichte</a> und den <a href="Solarer_Flux" class="mw-redirect" title="Solarer Flux">solaren Flux</a>:
</p>
<dl><dd><span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {\begin{aligned}1\,\mathrm {sfu} &={10}^{4}\,\mathrm {Jy} \\&={10}^{-22}\,\mathrm {\frac {W}{m^{2}\cdot Hz}} \\&={10}^{-19}\,\mathrm {\frac {erg}{s\cdot cm^{2}\cdot Hz}} \end{aligned}}}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mrow class="MJX-TeXAtom-ORD">
<mtable columnalign="right left right left right left right left right left right left" rowspacing="3pt" columnspacing="0em 2em 0em 2em 0em 2em 0em 2em 0em 2em 0em" displaystyle="true">
<mtr>
<mtd>
<mn>1</mn>
<mspace width="thinmathspace"></mspace>
<mrow class="MJX-TeXAtom-ORD">
<mi mathvariant="normal">s</mi>
<mi mathvariant="normal">f</mi>
<mi mathvariant="normal">u</mi>
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</mtd>
<mtd>
<mi></mi>
<mo>=</mo>
<msup>
<mrow class="MJX-TeXAtom-ORD">
<mn>10</mn>
</mrow>
<mrow class="MJX-TeXAtom-ORD">
<mn>4</mn>
</mrow>
</msup>
<mspace width="thinmathspace"></mspace>
<mrow class="MJX-TeXAtom-ORD">
<mi mathvariant="normal">J</mi>
<mi mathvariant="normal">y</mi>
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</mtd>
</mtr>
<mtr>
<mtd></mtd>
<mtd>
<mi></mi>
<mo>=</mo>
<msup>
<mrow class="MJX-TeXAtom-ORD">
<mn>10</mn>
</mrow>
<mrow class="MJX-TeXAtom-ORD">
<mo>−<!-- − --></mo>
<mn>22</mn>
</mrow>
</msup>
<mspace width="thinmathspace"></mspace>
<mrow class="MJX-TeXAtom-ORD">
<mfrac>
<mi mathvariant="normal">W</mi>
<mrow>
<msup>
<mi mathvariant="normal">m</mi>
<mrow class="MJX-TeXAtom-ORD">
<mn>2</mn>
</mrow>
</msup>
<mo>⋅<!-- ⋅ --></mo>
<mi mathvariant="normal">H</mi>
<mi mathvariant="normal">z</mi>
</mrow>
</mfrac>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd></mtd>
<mtd>
<mi></mi>
<mo>=</mo>
<msup>
<mrow class="MJX-TeXAtom-ORD">
<mn>10</mn>
</mrow>
<mrow class="MJX-TeXAtom-ORD">
<mo>−<!-- − --></mo>
<mn>19</mn>
</mrow>
</msup>
<mspace width="thinmathspace"></mspace>
<mrow class="MJX-TeXAtom-ORD">
<mfrac>
<mrow>
<mi mathvariant="normal">e</mi>
<mi mathvariant="normal">r</mi>
<mi mathvariant="normal">g</mi>
</mrow>
<mrow>
<mi mathvariant="normal">s</mi>
<mo>⋅<!-- ⋅ --></mo>
<mi mathvariant="normal">c</mi>
<msup>
<mi mathvariant="normal">m</mi>
<mrow class="MJX-TeXAtom-ORD">
<mn>2</mn>
</mrow>
</msup>
<mo>⋅<!-- ⋅ --></mo>
<mi mathvariant="normal">H</mi>
<mi mathvariant="normal">z</mi>
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</mfrac>
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</mtd>
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<annotation encoding="application/x-tex">{\displaystyle {\begin{aligned}1\,\mathrm {sfu} &={10}^{4}\,\mathrm {Jy} \\&={10}^{-22}\,\mathrm {\frac {W}{m^{2}\cdot Hz}} \\&={10}^{-19}\,\mathrm {\frac {erg}{s\cdot cm^{2}\cdot Hz}} \end{aligned}}}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/3b89d2d8552927cef66ae5d2a9b624576dceed96.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -6.505ex; width:26.249ex; height:14.009ex;" alt="{\displaystyle {\begin{aligned}1\,\mathrm {sfu} &={10}^{4}\,\mathrm {Jy} \\&={10}^{-22}\,\mathrm {\frac {W}{m^{2}\cdot Hz}} \\&={10}^{-19}\,\mathrm {\frac {erg}{s\cdot cm^{2}\cdot Hz}} \end{aligned}}}" loading="lazy"></span></dd></dl>
<p>mit den Einheiten
</p>
<ul><li>W für <a href="Watt_(Einheit)" title="Watt (Einheit)">Watt</a></li>
<li>Hz für <a href="Hertz_(Einheit)" title="Hertz (Einheit)">Hertz</a></li>
<li>erg für <a href="Erg_(Einheit)" title="Erg (Einheit)">Erg</a>.</li></ul>
<div class="mw-heading mw-heading2"><h2 id="Quelle">Quelle</h2></div>
<ul><li><a rel="nofollow" class="external text" href="http://sizes.com/units/solar_flux_unit.htm">sizes.com</a></li></ul></div><!--htdig_noindex--><div><div class="zim-footer">
Dieser Artikel wurde von <a class="external text" title="Zuletzt bearbeitet am 2021-08-08" href="https://de.wikipedia.org/wiki/?title=Solar_Flux_Unit&oldid=214595804">Wikipedia</a> herausgegeben. Der Text ist unter <a class="external text" href="https://creativecommons.org/licenses/by-sa/4.0/deed.de">Creative Commons Attribution-Share Alike 4.0</a> verfügbar, sofern nicht anders angegeben. Für die Mediendateien können zusätzliche Bedingungen gelten.
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