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20100506_Slides_Lennart_Lindegren.pdf

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   BitStore.Metadata_version:
   	1.0
  
   BitStore.Access:
   	public/private
  
   BitStore.Filename:
   	20100506_Slides_Lennart_Lindegren.pdf
  
   BitStore.Size:
   	4097727
  
   BitStore.Format:
   	PDF
  
   BitStore.Ident:
   	30001860:1
  
   BitStore.Digest:
   	sha256:819ef209b8bc827c760ccdd95d3344ef5d29113b48956a6f607522b57185c58a
  
   BitStore.Last_edit:
   	20201106 phk
  
   DDHF.Keyword:
   	EVENT/2010
   	EVENT/SLIDES
   	ASTRONOMY
  
   Event.Title:
   	Hipparcos og Gaia
  
   Event.Subtitle:
   	To foredrag om satelitter med dansk og svensk indsats gennem 85 år.
  
   Event.Date:
   	20100506
  
   Event.Location:
   	Kroppedal Museum
  
   Presentation.Speaker:
   	Lennart Lindegren
  
   Presentation.Title:
   	Gaia - solving non-linear equations with a billion unknowns
  
   Presentation.Bio:
   	Professor, Space astrometry group, Lund Univ.
  
   Presentation.Abstract:
   	The satellite Gaia is to be launched in September 2012, and
   	will after a few months take up its observing position at
   	the Lagrange point L2, 1.5 million km away from the Earth.
   	During five or six years it will continuously scan the whole
   	sky, registering the exact positions and motions of a billion
   	stars, and dispatch an enormous quantity of data back to
   	the Earth. The processing of this data, converting it to a
   	star catalogue eagerly awaited by astronomers around the
   	world, is by itself a great challenge, perhaps as large and
   	difficult as the making of the satellite. It is estimated
   	that the data analysis effort to produce the Gaia catalogue
   	is about one sextillion (10^21) floating point operations.
   	[Presented in English]