Colloq Abstract - Blanchard

December 4, 2018

4:00 pm Mountain

Jay Blanchard (JIVE)

 

The fringes of VLBI

 

Abstract

In this talk I will present two projects that push very long baseline interferometry (VLBI) techniques to their limits in aid of new science: The Event Horizon Telescope (EHT) is an ambitious project aiming to use VLBI at 215 and 325 GHz frequencies to directly image the accretion disk (and black hole shadow) of Sagittarius A*. Here I will present some of the technical set up and testing at ALMA and APEX in aid of the EHT, and one of the first science results: single baseline 1.4 mm (210 GHz) APEX - SPT fringes of Centaurus A. Secondly I will present global VLBI follow-up of the first merger of two neutron stars. Performed ~207 days after the gravitational wave detection, these observations resulted in a detection of a compact core, suggesting the formation of a relativistic jet. This result disagrees with previous cocoon emission models. 

Location: Socorro DSOC Auditorium
Local Host: Walter Brisken

 

 

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