EDP Sciences Journals List
Advanced Search
Subscriber Authentication Point
Home All issues Volume 419/1 Article
Free access article

Issue A&A
Volume 419, Number 1, May III 2004
Page(s) 19 - 23
Section Cosmology (including clusters of galaxies)
DOI http://dx.doi.org/10.1051/0004-6361:20034579



A&A 419, 19-23 (2004)
DOI: 10.1051/0004-6361:20034579

Primordial star formation triggered by UV photons from UHECR

Yu. A. Shchekinov and E. O. Vasiliev

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
(Received 25 October 2003 / Accepted 13 February 2004)

Abstract
The presence of ultra-high energy cosmic rays in the universe in the pre-ionization epoch enhances significantly H 2 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

Offprint request: Yu. A. Shchekinov, yus@phys.rsu.ru




© ESO 2004


What is OpenURL?

The OpenURL standard is a protocol for transmission of metadata describing the resource that you wish to access. An OpenURL link contains article metadata and directs it to the OpenURL server of your choice. The OpenURL server can provide access to the resource and also offer complementary services (specific search engine, export of references...). The OpenURL link can be generated by different means.
  • If your librarian has set up your subscription with an OpenURL resolver, OpenURL links appear automatically on the abstract pages.
  • You can define your own OpenURL resolver with your EDPS Account. In this case your choice will be given priority over that of your library.
  • You can use an add-on for your browser (Firefox or I.E.) to display OpenURL links on a page (see http://www.openly.com/openurlref/). You should disable this module if you wish to use the OpenURL server that you or your library have defined.