Computer Science
Scientific paper
Mar 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc..990..364r&link_type=abstract
FIRST STARS III: First Stars II Conference. AIP Conference Proceedings, Volume 990, pp. 364-368 (2008).
Computer Science
Population Iii Stars, Star Formation, Background Radiations, X-Ray Sources, X-Ray Bursts
Scientific paper
I discuss the role of far ultraviolet and X-ray radiation backgrounds in the early universe. Simulations of feedback-regulated galaxy formation before reionization suggest that the global feedback from far ultraviolet background is subdominant with respect to the local feedback from ionizing radiation. The formation of molecular hydrogen in ``positive feedback regions'' is an important process that promotes gas cooling and star formation in small mass halos.
Seed black holes from Pop III stars and SN explosions may produce a significant early X-ray background that imprints observable signatures on the thermal and ionization history of the intergalactic medium. X-ray ionization models of the intergalactic medium are consistent with WMAP3 data and are a viable alternative to reionization models from UV sources. Redshifted X-rays produce an outside-in reionization topology, ionizing the low density regions of the intergalactic medium before reionization is completed by UV sources at z~6-7. The ionizing photons from massive stars needed to complete reionization is significantly reduced in this model.
No associations
LandOfFree
Effects of Radiation Backgrounds on the Formation of Population III Stars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Effects of Radiation Backgrounds on the Formation of Population III Stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Effects of Radiation Backgrounds on the Formation of Population III Stars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1036999