BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//CERN//INDICO//EN
BEGIN:VEVENT
SUMMARY:Milky Way Modelling with Stellar Streams
DTSTART;VALUE=DATE-TIME:20230321T085900Z
DTEND;VALUE=DATE-TIME:20230321T090100Z
DTSTAMP;VALUE=DATE-TIME:20241114T092419Z
UID:indico-contribution-244@meetings.aip.de
DESCRIPTION:Speakers: Orlin Koop (Kapteyn Astronomical Institute)\nStellar
  streams are created when globular clusters or dwarf galaxies tidally disr
 upt in the gravitational potential of their host galaxy. These streams the
 refore offer a great probe to this galactic potential. Current observation
 s show a multitude of Milky Way stellar streams to have substructure in th
 e form of 'spurs'\, 'gaps' and even multiple components. These can origina
 te from interactions of the stream with dark matter subhalos\, which could
  probe the nature of dark matter. I'll talk about the specific case of the
  Jhelum stream\, which shows multiple components after a close interaction
  with the Sagittarius Dwarf Galaxy\, which means we should take the classi
 cal satellites into account when modelling stellar streams to infer inform
 ation about the Milky Way potential. \nAnother recent observation (Dodd et
  al 2022a) shows that the Helmi Streams seem to orbit near one or multiple
  resonances. This results in substructure in angular momentum space. To ex
 plain the persistence of this substructure\, one seems to need a prolate d
 ark matter halo in the region where the Helmi streams orbit. If there is s
 ome time left\, I'll talk about this substructure when considered in the c
 ontext of an alternative theory of gravity called MOND (Modified Newtonian
  Dynamics). I'll introduce my simple MOND models of the Milky Way and disc
 uss their ability to sustain this Helmi Streams substructure.\n\nhttps://i
 aus379.aip.de/event/20/contributions/244/
LOCATION:Haus H\, Telegrafenberg
URL:https://iaus379.aip.de/event/20/contributions/244/
END:VEVENT
END:VCALENDAR