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<p>Estimados,<br>
</p>
<p>Les recordamos que en el día de hoy, a las 14:00 hs. en el Salón
Meridiano, tendremos un seminario a cargo de la Dra. Anabella
Araudo (Institute of Physics, Academy of Sciences, Czech Republic)<b>,
el cual </b><b>se titula "Acceleration of UHECRs in AGN jets</b><b><b><b
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id="docs-internal-guid-bbc97de4-7fff-2b0a-475b-6607df42f029"><span style="font-size:12pt;font-family:Verdana;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;"></span></b></b>".
El</b><b> resumen del mismo lo pueden leer al final de este
mensaje.</b></p>
<p><b><b style="font-weight:normal"
id="gmail-m_-6812595034874996437docs-internal-guid-63827ca9-7fff-0118-6738-753093e1a804">
</b></b></p>
<p dir="ltr"
style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;text-align:justify"><b><b
style="font-weight:normal"
id="gmail-m_-6812595034874996437docs-internal-guid-63827ca9-7fff-0118-6738-753093e1a804">Les
recordamos, además, que los objetivos de estos seminarios son
el de generar un espacio ameno y activo de intercambio de
ideas, para exponer nuestros trabajos y temas de
investigación, o bien el de aquellos que circunstancialmente
nos visitan en nuestra casa de altos estudios. Teniendo en
cuenta que nuestra institución nuclea una gran diversidad de
temas de investigación, y distintos estamentos académicos,
este espacio resulta de vital importancia para conocernos,
acercarnos y hasta generar posibles colaboraciones. </b></b></p>
<b><b style="font-weight:normal"
id="gmail-m_-6812595034874996437docs-internal-guid-63827ca9-7fff-0118-6738-753093e1a804">
</b></b><b><b style="font-weight:normal"
id="gmail-m_-6812595034874996437docs-internal-guid-63827ca9-7fff-0118-6738-753093e1a804">
</b>
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<b><b style="font-weight:normal"
id="gmail-m_-6812595034874996437docs-internal-guid-63827ca9-7fff-0118-6738-753093e1a804">Quedan
todos cordialmente invitados y los esperamos 15 minuto</b></b><span
style="font-weight:normal">s antes con café y galletitas.</span><br>
<br>
<b><b style="font-weight:normal"
id="gmail-m_-6812595034874996437docs-internal-guid-63827ca9-7fff-0118-6738-753093e1a804">Atentamente,
<br>
<br>
Secyt-FCAG<br>
<br>
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</b><b>
<div class="moz-forward-container"><b style="font-weight:normal;"
id="docs-internal-guid-bbc97de4-7fff-2b0a-475b-6607df42f029"><span style="font-size:12pt;font-family:Verdana;color:#000000;background-color:transparent;font-weight:700;font-style:normal;font-variant:normal;text-decoration:underline;-webkit-text-decoration-skip:none;text-decoration-skip-ink:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;">Seminario</span><span style="font-size:12pt;font-family:Verdana;color:#000000;background-color:transparent;font-weight:700;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;">:</span><span style="font-size:12pt;font-family:Verdana;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;"> Dra. Anabella Araudo -Institute of Physics, Academy of Sciences, Czech Republic.</span></b><b
style="font-weight:normal;"
id="docs-internal-guid-bbc97de4-7fff-2b0a-475b-6607df42f029">
</b><b style="font-weight:normal;"
id="docs-internal-guid-bbc97de4-7fff-2b0a-475b-6607df42f029"><br>
<p dir="ltr"
style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;text-align:
justify;"><span style="font-size:12pt;font-family:Verdana;color:#000000;background-color:transparent;font-weight:700;font-style:normal;font-variant:normal;text-decoration:underline;-webkit-text-decoration-skip:none;text-decoration-skip-ink:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;">
</span></p>
<p dir="ltr"
style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;text-align:
justify;"><span style="font-size:12pt;font-family:Verdana;color:#000000;background-color:transparent;font-weight:700;font-style:normal;font-variant:normal;text-decoration:underline;-webkit-text-decoration-skip:none;text-decoration-skip-ink:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;">Título</span><span style="font-size:12pt;font-family:Verdana;color:#000000;background-color:transparent;font-weight:700;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;">:</span><span style="font-size:12pt;font-family:Verdana;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;"> Acceleration of UHECRs in AGN jets</span></p>
<br>
<p dir="ltr"
style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;text-align:
justify;"><span style="font-size:12pt;font-family:Verdana;color:#000000;background-color:transparent;font-weight:700;font-style:normal;font-variant:normal;text-decoration:underline;-webkit-text-decoration-skip:none;text-decoration-skip-ink:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;">Resumen:</span><span style="font-size:12pt;font-family:Verdana;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;"> One of the most exciting and unsolved problems in Astrophysics is figuring out the origin of the Ultra High Energy Cosmic Rays (UHECRs). These are protons and heavy ions having an energy larger than 1 EeV arriving on Earth from outside our Galaxy, but their origin remains unknown. Relativistic jets in Active 10 Galactic Nuclei (AGN) are candidates to be the sources where these particles are accelerated. Diffusive shock acceleration is the most established mechanism to accelerate particles in sources where strong shocks are present, such as AGN jets. However, recent theoretical advances combined with multi-frequency observational data indicate that relativistic shocks in AGN jets are unable to accelerate particles to energies much larger than a PeV. The implication of this result is that if UHECRs are accelerated by shocks, then those shocks are probably not relativistic, and therefore mildly relativistic shocks in the backflow of giant-lobed radio galaxies such as Centaurus A and Fornax A are very promising candidates to accelerate UHECRs. In this talk I will present the state of the art of UHECR acceleration by shocks in AGN. I will focus on particle acceleration and magnetic field amplification in termination shocks and in the backflows in AGN jets.</span></p>
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