Lyman-alpha absorption spectrum of the primordial intergalactic medium

Details Lyman-alpha absorption spectrum of the primordial intergalactic medium Lyman-alpha absorption spectrum of the primordial intergalactic medium

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...405..479b&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 405, no. 2, p. 479-490.

Mathematics

Probability

85

Absorption Spectra, Dark Matter, Density (Mass/Volume), Hydrogen, Intergalactic Media, Lyman Alpha Radiation, Astronomical Models, Clumps, Doppler Effect, Simulation, Statistical Correlation

Scientific paper

The Ly-alpha absorption by four intergalactic medium (IGM) distribution models in the cold dark matter cosmology is simulated, taking the role of the Doppler effect of the peculiar velocity into account. It is found that the medium can produce forestlike Ly-alpha absorption spectra compatible with those observed by fitting statistically the probability distribution function of the line equivalent width and the two-point correlation function. The peculiar velocity shifts the line positions slightly, but does not affect the line profiles when compared to the thermal broadening of atoms. It is considered that some fundamental physical process of the IGM neglected here should follow the same dynamical behavior as in traditional cloud models.

Affiliated with

Also associated with

No associations

Rating

Lyman-alpha absorption spectrum of the primordial intergalactic medium 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 Lyman-alpha absorption spectrum of the primordial intergalactic medium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lyman-alpha absorption spectrum of the primordial intergalactic medium will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1442084