| Issue |
A&A
Volume 419, Number 1, May III 2004
|
|
|---|---|---|
| Page(s) | 19 - 23 | |
| Section | Cosmology (including clusters of galaxies) | |
| DOI | https://doi.org/10.1051/0004-6361:20034579 | |
| Published online | 23 April 2004 | |
Primordial star formation triggered by UV photons from UHECR
Department of Physics, University of Rostov, and Isaac Newton Institute of Chile, Rostov-on-Don Branch, Rostov-on-Don 344090, Russia e-mail: eugstar@mail.ru
Corresponding author: Yu. A. Shchekinov, yus@phys.rsu.ru
Received:
25
October
2003
Accepted:
13
February
2004
The presence of ultra-high energy cosmic rays in the universe in the pre-ionization epoch enhances significantly H2 kinetics in virialized halos. It results in more efficient radiative cooling and decreases the lower mass limit of the first star-forming systems. Consequently, the fraction of baryons contained in the first luminous objects and their contribution to the reionization of the universe can significantly increase in comparison with the standard scenario.
Key words: cosmology: early universe / cosmology: miscellaneous / stars: formation
© ESO, 2004
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.