On the ionization balance of helium in the intergalactic medium

Details On the ionization balance of helium in the intergalactic medium On the ionization balance of helium in the intergalactic medium

Jul 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982mnras.200p..13s&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 200, July 1982, p. 13P-18P.

Astronomy and Astrophysics

Astronomy

10

Helium Ions, Intergalactic Media, Photoionization, Quasars, Gas Density, Iue, Ultraviolet Astronomy

Scientific paper

A straightforward photoionization analysis is given of the tentative IUE observation that the intergalactic medium near the QSO Q2204 - 408 (z = 3.18) contains a He II abundance of at least 2 x 10 to the -9th per cu cm. This analysis is found to be rather implausible and it is suggested that, if the IGM is indeed photoionized, the QSO may be located in an expanding supercluster of size approximately equal to or greater than 13 Mpc and total mean gas density about 1.5 x 10 to the -5th per cu cm. If the same is true for OQ 172 (z = 3.53), one might be able to use IUE to detect the edge of its supercluster in He II near the plate limit.

Affiliated with

Also associated with

No associations

Rating

On the ionization balance of helium in the 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 On the ionization balance of helium in the intergalactic medium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the ionization balance of helium in the intergalactic medium will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1024283