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SUMMARY:M87: Turbulent loading leading to large-scale episodic wiggling
DTSTART;VALUE=DATE-TIME:20171213T162000Z
DTEND;VALUE=DATE-TIME:20171213T164000Z
DTSTAMP;VALUE=DATE-TIME:20260818T052855Z
UID:indico-contribution-19@cern.ch
DESCRIPTION:Speakers: Dr. BRITZEN\, Silke (MPIfR)\nM87 is one of the two m
 ain targets of the Event Horizon Telescope (EHT) project since it migth al
 low to detect the black hole shadow and promises a direct view on the jet 
 launching process itself. In this talk\, we present a re-analysis of 31 VL
 BA observations at 15 GHz (MOJAVE program). One of the findings is\, that 
 the M87-jet visible at 15 GHz\, probes a different physical zone compared 
 to the standard blazar-zone we tend to see in AGN jets. The most likely sc
 enario explaining the observed phenomena is a turbulent mass loading into 
 the jet\, most probably due to local\, fast reconnection processes driven 
 by turbulence of a tangled magnetic field\, either generated in the accret
 ion disk or the disk corona. In addition\, on large scales\, a global magn
 etic structure is required to channel the turbulent flow into what evolves
  into a large-scale jet. Large-scale jet instabilities may explain the cur
 ved pattern of the observed jet flow. This scenario is supported by the Bl
 andford & Payne-model although we cannot rule out a Blandford & Znajek-ori
 gin or -contribution.\n\nhttps://events.mpifr-bonn.mpg.de/indico/event/61/
 session/6/contribution/19
LOCATION:MPI für Radioastronomie 2.05
URL:https://events.mpifr-bonn.mpg.de/indico/event/61/session/6/contributio
 n/19
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