Alexander Kashlinsky (NASA Goddard Space Flight Center)

Looking at Infrared Background Anisotropies with Euclid - LIBRAE and first stars
When Mar 14, 2013 from 03:00 PM to 04:00 PM
  • Special Seminar
Where SH, Lecture hall
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I will discuss a new project, LIBRAE, of the cosmic infrared background (CIB) planned by NASA and ESA for the future Euclid satellite.  LIBRAE will exploit planned Euclid imaging of both the Wide and Deep Survey regions at infrared and visible wavelengths in order to 1) measure the source-subtracted CIB structure (fluctuations) out to scales of a few degrees with better than ~1% accuracy. With this we will be able to clearly distinguish the nature and parameters of the populations responsible for the production of the CIB fluctuations. 2) Determine the Lyman break, and epochs, of the populations producing these fluctuations by expanding the SED of the measured fluctuations from 3-5 micron to 0.5-5 micron. 3) cross-correlate the measured fluctuations with optical, IR, X-ray, and microwave imaging from a number of other facilities. LIBRAE will identify the net emissions from the first stars era, lead to a better understanding the condition of intergalactic medium at that epoch, isolate the contributions from the first black holes and shed light on dust content at those times. The project has potentially transformative implications for understanding the emergence of the Universe out of the "Dark Ages".