WV Governor’s School Lecture

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NoisyAstronomer

Lecture for the 2011 West Virginia Governor's School at the Green Bank Observatory.

Tecnologia

A True Story of Astronomy in the Desert Nicole Gugliucci for the PAPER Team PAPER is a UVa/Berkeley/NRAO/UPenn/SKA-SA Production

Why do radio astronomers hide from people?

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

http://people.su.se/~gmell/lib/exe/fetch.php?cache=cache&media=xy_100mpc_406.gif GarreltMellema 8

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)

Signal vs. Foregrounds at 140 MHz MW synchrotron (Power) Point Sources MW free-free E-gal free-free EoR CMB (Multipole Moment)

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

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 More on Interferometry 1-D Fourier Transforms www.bruker-biospin.com

18 More on Interferometry 1-D Fourier Transforms www.bruker-biospin.com 2-element response Prof. Dale E. Gary - NJIT

19 More on Interferometry 1-D Fourier Transforms www.bruker-biospin.com + + +… Prof. Dale E. Gary - NJIT

20 More on Interferometry 1-D Fourier Transforms www.bruker-biospin.com + + +… Prof. Dale E. Gary - NJIT

21 More on Interferometry 1-D Fourier Transforms www.bruker-biospin.com + + +… Prof. Dale E. Gary - NJIT

The Ionosphere http://madrigal.haystack.mit.edu/models/IRI/index.html http://radiojove.gsfc.nasa.gov

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

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WV Governor’s School Lecture

1. A True Story of Astronomy in the Desert Nicole Gugliucci for the PAPER Team PAPER is a UVa/Berkeley/NRAO/UPenn/SKA-SA Production

2. Why do radio astronomers hide from people?

3. Why do radio astronomers hide from people?

4. Why do radio astronomers hide from people?

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

8. http://people.su.se/~gmell/lib/exe/fetch.php?cache=cache&media=xy_100mpc_406.gif GarreltMellema 8

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

13.

14.

15.

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

22. What was the early universe like?

23.

24. PAPER System

25.

26. With 32 antennas…

27.

28. The Ionosphere http://madrigal.haystack.mit.edu/models/IRI/index.html http://radiojove.gsfc.nasa.gov

29.

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

31. Thank you!

Notas do Editor

Audience participation
These all give off signals
So, we protect ourselves by location
And we’ve used this site to our advantage
What are we looking for with this weird looking contraption?
Next, animation
And if that doesn’t work…
So so faint…
Not to mention, human-made signals
What signal are we looking for exactly?
z = 7 was 12.9 billion years ago…And that’s right near the FM band
For such an experiment, we need to find a much more remote site…
What are we building?
A whole array? What does that do? (optional interferometry section is next)
To answer this, I spent my summer “vacation”…
Hidden system slide next, then array pic (64!)
What can we do with this?
With 64…
Make maps and catalogues, find new SNRs, further characterize the instrument, etc…Note on what I do
Next step…
128! And later, HERAEmphasize student involvement

WV Governor’s School Lecture

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