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Fermi Observation of Early Background Light Animation

This animation tracks several gamma rays through space and time, from their emission in the jet of a distant blazar to their arrival in Fermi's Large Area Telescope (LAT). During their journey, the number of randomly moving ultraviolet and optical photons (blue) increases as more and more stars are born in the universe. Eventually, one of the gamma rays encounters a photon of starlight and the gamma ray transforms into an electron and a positron. The remaining gamma-ray photons arrive at Fermi, interact with tungsten plates in the LAT, and produce the electrons and positrons whose paths through the detector allows astronomers to backtrack the gamma rays to their source.
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Another multimedia item related to this story:
     NASA's Fermi Explores the Early Universe (id 11117)

Artist's rendering of the process described above.    Artist's rendering of the process described above.
Duration: 1.3 minutes
Available formats:
  1280x720 (59.94 fps) QT         1 GB
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  1280x720 (59.94 fps) QT         1 GB
  1280x720 (29.97 fps) QT         137 MB
  1280x720 (30 fps) QT         43 MB
  1280x720 (29.97 fps) MPEG-4   53 MB
  1280x720   TIFF         2 MB
  640x360 (29.97 fps) QT         38 MB
  960x540 (59.94 fps) WEBM         22 MB
  1280x720   JPEG         48 KB
  320x180     JPEG         20 KB
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Short URL to This Page:http://svs.gsfc.nasa.gov/goto?11130
Animation Number:11130
Completed:2012-10-31
Animator:Cruz DeWilde (Avant Gravity) (Lead)
Producers:Scott Wiessinger (USRA)
 Francis Reddy (Syneren Technologies)
Writer:Francis Reddy (Syneren Technologies)
Platform/Sensor/Data Set:Fermi
Series:Astrophysics Animations
Goddard TV Tape:G2012-104 -- Fermi EBL Media Telecon
Please give credit for this item to:
NASA/Goddard Space Flight Center/Cruz deWilde
 
Keywords:
SVS >> Galaxy
SVS >> Gamma Ray
SVS >> HDTV
SVS >> Ultraviolet
SVS >> Black Hole
SVS >> Astrophysics
SVS >> Universe
SVS >> Space
SVS >> Fermi
SVS >> Blazar
SVS >> Star
NASA Science >> Universe
 
 


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Many of our multimedia items use the GCMD keywords. These keywords can be found on the Internet with the following citation:
Olsen, L.M., G. Major, K. Shein, J. Scialdone, S. Ritz, T. Stevens, M. Morahan, A. Aleman, R. Vogel, S. Leicester, H. Weir, M. Meaux, S. Grebas, C.Solomon, M. Holland, T. Northcutt, R. A. Restrepo, R. Bilodeau, 2013. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version 8.0.0.0.0

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