7. The new [epoch of reionization] map may carry more information than even the cosmic microwave background radiation. - Avi Loeb, Scientific American, Nov. 06 We are looking to see the signal of the neutral hydrogen during reionization. 3 September 2008 N. Gugliucci – CAS 7
9. Z=9 or 556 million yrs after BB Z=8 or 652 million yrs after BB Z=7 or 778 million yrs after BB Z=6 or 950 million yrs after BB by Trac & Cen (2007)
10. Signal vs. Foregrounds at 140 MHz MW synchrotron (Power) Point Sources MW free-free E-gal free-free EoR CMB (Multipole Moment)
11. Signal vs. Foregrounds at 140 MHz MW synchrotron (Power) Point Sources MW free-free E-gal free-free EoR CMB (Multipole Moment)
12. Seeing in the Dark The 21 cm or 1.4 GHz transition marks a protected band for radio astronomy, due to the importance of hydrogen as an astronomical tracer. However, the hydrogen at the EoR is redshifted to a lower frequency. Machele Cable of Wake Forest Ned Wright's Cosmology Tutorial Reionization occurs z ~ 6 - 14, redshifted to 100 – 230 MHz
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16. Array, or, Interferometer Actual imaging of the neutral hydrogen will take many more times the sensitivity of current telescopes Instead, measure power spectrum. This is natural for an interferometer, which detects spatial frequencies Christian Deichert www.daviddarling.info
17. 17 More on Interferometry 1-D Fourier Transforms www.bruker-biospin.com
18. 18 More on Interferometry 1-D Fourier Transforms www.bruker-biospin.com 2-element response Prof. Dale E. Gary - NJIT
19. 19 More on Interferometry 1-D Fourier Transforms www.bruker-biospin.com + + +… Prof. Dale E. Gary - NJIT
20. 20 More on Interferometry 1-D Fourier Transforms www.bruker-biospin.com + + +… Prof. Dale E. Gary - NJIT
21. 21 More on Interferometry 1-D Fourier Transforms www.bruker-biospin.com + + +… Prof. Dale E. Gary - NJIT
30. Astronomy in the desert… Far away from humans for next generation radio telescopes PAPER is poised to make the first detection of the Epoch of Reionization signal, giving us a clue to the first stars and galaxies Upcoming projects need bright young scientists and engineers to continue these explorations