[Todos] Fwd: Ciclo de coloquios IAR: Lunes 14 de junio, 13.30 h

[Secretaria de Física]

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Secretaría Dpto. de Física
secre2 en fisica.unlp.edu.ar
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115 e/48 y 49 - Detrás del Colegio Nacional
Facultad de Ciencias Exactas - UNLP
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-------- Mensaje original -------- 

 		ASUNTO:
 		Fwd: Ciclo de coloquios IAR: Lunes 14 de junio, 13.30 h

 		FECHA:
 		2021-06-14 09:31

 		REMITENTE:
 		Florencia Laura Vieyro <florenciavieyro en gmail.com>

 		DESTINATARIO:
 		all en iar.unlp.edu.ar

Estimados, 

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. 

Saludos cordiales, 

Florencia 

************************************************* Dear participants,

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. 

With best regards, 
Florencia 

---------- Forwarded message ---------
From: FLORENCIA LAURA VIEYRO <florenciavieyro en gmail.com>
Date: Mon, 7 Jun 2021 at 09:14
Subject: Ciclo de coloquios IAR: Lunes 14 de junio, 13.30 h
To: <all en iar.unlp.edu.ar> 

Estimados, 

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. 

Saludos cordiales, 

Florencia 
**********************************************************************************


Link: https://meet.google.com/rrd-wynj-whv 

Speaker: Jonathan Weintroub, Harvard-Smithsonian Center for Astrophysics


Title: Instrumentation and technology supporting the Event Horizon
Telescope 

Abstract: 

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.
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