Destruction of Molecular Hydrogen During Cosmological Reionization

Details Destruction of Molecular Hydrogen During Cosmological Reionization Destruction of Molecular Hydrogen During Cosmological Reionization

1996-08-20

arxiv.org/abs/astro-ph/9608130v1

Astrophys.J. 476 (1997) 458

Astronomy and Astrophysics

Astrophysics

14 pages, uuencoded compressed Postscript, 4 figures included. To appear in ApJ

Scientific paper

10.1086/303647

We investigate the ability of primordial gas clouds to retain molecular hydrogen (H_2) during the initial phase of the reionization epoch. We find that before the Stromgren spheres of the individual ionizing sources overlap, the UV background below the ionization threshold is able to penetrate large clouds and suppress their H_2 abundance. The consequent lack of H_2 cooling could prevent the collapse and fragmentation of clouds with virial temperatures T_vir < 10^4 K (or masses 10^8 Msun [(1+z_vir)/10]^{-3/2}). This negative feedback on structure-formation arises from the very first ionizing sources, and precedes the feedback due to the photoionization heating.

Affiliated with

Also associated with

No associations

Rating

Destruction of Molecular Hydrogen During Cosmological Reionization 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 Destruction of Molecular Hydrogen During Cosmological Reionization, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Destruction of Molecular Hydrogen During Cosmological Reionization will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-545803