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<h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Dale Frail</span></h1>
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<p><b>Dale Andrew Frail</b> (* <a href="1961" title="1961">1961</a>) ist ein kanadischer Radio<a href="Astronom" title="Astronom">astronom</a>.
</p><p>Frail arbeitet für das <a href="National_Radio_Astronomy_Observatory" title="National Radio Astronomy Observatory">National Radio Astronomy Observatory</a> (NRAO) in <a href="Socorro_(New_Mexico)" title="Socorro (New Mexico)">Socorro</a>, <a href="New_Mexico" title="New Mexico">New Mexico</a>. Er erhielt seinen Ph.D. von der <a href="University_of_Toronto" title="University of Toronto">University of Toronto</a> 1989. Neben seiner Suche nach planetaren Körpern außerhalb des <a href="Sonnensystem" title="Sonnensystem">Sonnensystems</a> studiert er ebenfalls <a href="Gammablitz" title="Gammablitz">Gammablitze</a>.
</p><p>Anfang des Jahres 1992 während er für NRAO arbeitete, gab er zusammen mit dem polnischen Astronomen <a href="Aleksander_Wolszczan" title="Aleksander Wolszczan">Aleksander Wolszczan</a> die Entdeckung von zwei Planeten und einem möglichen dritten um den Pulsar <a href="PSR_B1257%2B12" class="mw-redirect" title="PSR B1257+12">PSR B1257+12</a> bekannt. Ihre Entdeckung wurde Mitte 1992 bestätigt. Die Entdeckung ist deshalb bemerkenswert, da es sich nicht nur um die ersten <a href="Pulsar-Planet" title="Pulsar-Planet">Pulsar-Planeten</a> handelte, sondern auch um die ersten <a href="Exoplanet" title="Exoplanet">Exoplaneten</a> überhaupt.
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<div class="mw-heading mw-heading2"><h2 id="Referenzen">Referenzen</h2></div>
<ul><li>A. Wolszczan und D. A. Frail: <a rel="nofollow" class="external text" href="https://www.nature.com/nature/journal/v355/n6356/abs/355145a0.html"><i>A planetary system around the millisecond pulsar PSR 1257+12.</i></a> In: <i>Nature</i>. Band 355, Nr. 6356, S. 145–147, 9. Januar 1992.</li>
<li>A. Wolszczan: <i>Confirmation of Earth-mass planets orbiting the millisecond pulsar PSR B1257+12.</i> In: <i>Science</i>. Band 264, Nr. 5158, S. 538–542, 22. April 1994.</li>
<li>M. Konacki und A. Wolszczan: <i>Masses and Orbital Inclinations of Planets in the PSR B1257+12 System</i>. In: <i>Astrophysical Journal</i>. Band 591, Nr. 2, S. L147–L150, 2003. <a href="Bibcode" title="Bibcode">bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2003ApJ...591L.147K">2003ApJ...591L.147K</a></li></ul>
<div class="mw-heading mw-heading2"><h2 id="Weblinks">Weblinks</h2></div>
<ul><li><a rel="nofollow" class="external text" href="http://science.psu.edu/news-and-events/2002-news/Wolszczan2-2002.htm">Earth Sized Planets Confirmed</a></li></ul>
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Normdaten (Person): <a href="Virtual_International_Authority_File" title="Virtual International Authority File">VIAF</a>: <span class="-print"><a rel="nofollow" class="external text" href="https://viaf.org/viaf/105362249/">105362249</a></span> | </div>
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