Dr
Andrei Mesinger
(Princeton University)
10/11/2010, 11:30
Reionization
Contributed talk
I will discuss how the first generations of astrophysical objects made a substantial impact on our Universe though their radiation. Due to their large mean free paths, X-rays from the first sources likely quickly heated the IGM. The 2nd generation of 21cm instruments can provide a unique view into these early epoch. The early stages of reionization likely followed, driven by so-called...
Dr
Mark Dijkstra
(MPA Garching)
10/11/2010, 11:50
Reionization
Contributed talk
The Lyman Alpha (Lya) emission line is robustly predicted to be the most prominent intrinsic spectral feature of the `first’ galaxies that initiated the reionization process in our Universe. Unfortunately, the large Gunn-Peterson optical depth of the surrounding neutral intergalactic medium (IGM) is thought to render this line extremely difficult to detect prior to reionization. However, I...
Dr
Carmelo Evoli
(SISSA/ISAS, Trieste, Italy)
10/11/2010, 12:10
Reionization
Contributed talk
I will show recent results on the study of decaying/annihilating dark matter (DM) candidate effects in the high-redshift Universe. After a brief introduction to the physics of reionization and the exotic scenario in which DM contributes to reionize the Universe, I will discuss how to constrain this contribution. To this aim, a new numerical code, MEDEA (Monte Carlo Energy Deposition Analysis),...
