[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
Cecilia Cafiero / Alejandro Chiquino
115 e/48 y 49 - Detrás del Colegio Nacional
Facultad de Ciencias Exactas - UNLP
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-------- Mensaje original -------- 

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

 		FECHA:
 		2021-06-07 09:14

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

 		DESTINATARIO:
 		lgassa en inifta.unlp.edu.ar, leandro.grasso en ing.unlp.edu.ar, secyt
fcaglp <secyt en fcaglp.unlp.edu.ar>, Secretaria del Dpto.de Física
<secre2 en fisica.unlp.edu.ar>, difusion en iafe.uba.ar

Estimados, 

Les agradecería si pueden darle difusión en sus respectivos
departamentos el próximo coloquio del Instituto Argentino de
Radioastronomía. 

Saludos cordiales, 
Florencia Vieyro 

__________________________________________ 
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 
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Enlace: https://meet.google.com/rrd-wynj-whv 

Expositor: Jonathan Weintroub, Harvard-Smithsonian Center for
Astrophysics 

Título: Instrumentation and technology supporting the Event Horizon
Telescope 

Resumen: 

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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