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<div class="pre" style="margin: 0; padding: 0; font-family: monospace">********************************************<br /> Secretaría Dpto. de Física<br /> <a href="mailto:secre2@fisica.unlp.edu.ar">secre2@fisica.unlp.edu.ar</a><br /> Cecilia Cafiero / Alejandro Chiquino<br /> 115 e/48 y 49 - Detrás del Colegio Nacional<br /> Facultad de Ciencias Exactas - UNLP<br /> ********************************************</div>
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<p>-------- Mensaje original --------</p>
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<th align="right" valign="baseline" nowrap="nowrap">Asunto:</th>
<td>Fwd: Ciclo de coloquios IAR: Lunes 14 de junio, 13.30 h</td>
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<th align="right" valign="baseline" nowrap="nowrap">Fecha:</th>
<td>2021-06-14 09:31</td>
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<th align="right" valign="baseline" nowrap="nowrap">Remitente:</th>
<td>Florencia Laura Vieyro <florenciavieyro@gmail.com></td>
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<th align="right" valign="baseline" nowrap="nowrap">Destinatario:</th>
<td>all@iar.unlp.edu.ar</td>
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<div dir="ltr"><br /><span style="font-size: 12pt;">Estimados,</span>
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<div><span style="font-size: 12pt;">Les recordamos que hoy a las 13.30 h hay coloquio. En esta oportunidad, el Ing. Jonathan Weintroub, del Harvard–Smithsonian Center for Astrophysics, dará una charla sobre instrumentación y tecnología en el Telescopio Horizonte de Eventos. Abajo pueden encontrar los datos para conectarse al coloquio.</span>
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<div style="text-align: justify;"><span style="font-size: 12pt;">Saludos cordiales,</span></div>
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<div style="text-align: justify;"><span style="font-size: 12pt;">Florencia</span></div>
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<div style="text-align: justify;"><span style="font-size: 12pt;">*************************************************</span></div>
<span style="font-size: 12pt;">Dear participants,</span><br /><br /><span style="font-size: 12pt;">This is a reminder that today at 1.30 pm (GMT-3), Jonathan Weintroub, from the Harvard–Smithsonian Center for Astrophysics, will give a seminar about instrumentation and technology supporting the Event Horizon Telescope. You can find the details of the talk below.</span>
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<div style="text-align: justify;"><span style="font-size: 12pt;">With best regards,</span></div>
<div style="text-align: justify;"><span style="font-size: 12pt;">Florencia</span></div>
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<div class="gmail_attr" dir="ltr" style="text-align: justify;"><span style="font-size: 12pt;">---------- Forwarded message ---------</span><br /><span style="font-size: 12pt;">From: <strong class="gmail_sendername" dir="auto">Florencia Laura Vieyro</strong> <<a href="mailto:florenciavieyro@gmail.com">florenciavieyro@gmail.com</a>></span><br /><span style="font-size: 12pt;">Date: Mon, 7 Jun 2021 at 09:14</span><br /><span style="font-size: 12pt;">Subject: Ciclo de coloquios IAR: Lunes 14 de junio, 13.30 h</span><br /><span style="font-size: 12pt;">To: <<a href="mailto:all@iar.unlp.edu.ar">all@iar.unlp.edu.ar</a>></span></div>
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<div dir="ltr"><span style="font-size: 12pt;">Estimados,</span>
<div style="text-align: justify;"> </div>
<div style="text-align: justify;"><span style="font-size: 12pt;">El próximo lunes 14 de junio a las 13.30 h, el Ing. Jonathan Weintroub, del Harvard–Smithsonian Center for Astrophysics, dará una charla sobre instrumentación y tecnología en el Telescopio Horizonte de Eventos. Abajo pueden encontrar los datos para conectarse al coloquio.</span></div>
<div style="text-align: justify;"> </div>
<div style="text-align: justify;"><span style="font-size: 12pt;">Saludos cordiales,</span></div>
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<div style="text-align: justify;"><span style="font-size: 12pt;">Florencia</span></div>
<div style="text-align: justify;"><span style="font-size: 12pt;">**********************************************************************************</span></div>
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<div style="text-align: justify;"><span style="font-size: 12pt;">Link: <a href="https://meet.google.com/rrd-wynj-whv">https://meet.google.com/rrd-wynj-whv</a></span></div>
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<div style="text-align: justify;"><span style="font-size: 12pt;">Speaker: Jonathan Weintroub, Harvard–Smithsonian Center for Astrophysics</span></div>
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<div style="text-align: justify;"><span style="font-size: 12pt;">Title: Instrumentation and technology supporting the Event Horizon Telescope</span></div>
<div style="text-align: justify;"><span style="font-size: 12pt;"> </span></div>
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<div style="text-align: justify;"><span style="font-size: 12pt;">Abstract:</span></div>
<div style="text-align: justify;"><br /><span style="font-size: 12pt;">The Event Horizon Telescope (EHT) is an earth-size very long baseline interferometry (VLBI) array, operating at the shortest radio wavelengths of about 1 millimeter, corresponding to radio frequencies 230 GHz and higher. As a result it has an extremely fine angular resolution of the order of 20 microarcseconds. For super massive black holes (SMBH) which are relatively nearby and sufficiently massive, this is the angular scale subtended by the event horizon. Relativistically lensed emission from the black hole's accretion disk and jet can be directly observed. Retrofitting new wideband technology and atomic clocks to existing radio telescopes led to the first image of the "shadow" of the event horizon of a black hole, which the EHT published on 10 April 2019. I will give an introduction to the science behind the EHT and describe the significance of the image published in 2019, and of polarization images published just the year. The balance of the talk will focus the technology and instrumentation that enabled these observations. I will close by outlining our vision for the next generation EHT or ngEHT.</span></div>
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