Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aas...191.8407m&link_type=abstract
American Astronomical Society, 191st AAS Meeting, #84.07; Bulletin of the American Astronomical Society, Vol. 29, p.1350
Astronomy and Astrophysics
Astronomy
Scientific paper
Groupings of QSOs closely spaced on the sky provide a way to measure the sizes, shapes, and characteristic clustering lengths of structures responsible for absorption in the Lyman alpha forest. Recent studies of QSO pairs have suggested large sizes assuming spherical absorbers, while numerical simulations at moderate to high redshift produce filamentary structures that will only be detected through observations of groups of more than two QSOs. We present the results of an analysis of HST-FOS G190H spectra of a unique configuration of five QSOs with pair separations ranging from 1 to 8 arcmin. The redshifts of the four quasars with detected flux in the observed region of 1700 - 2300 Angstroms are zem = 1.10, 1.01, 1.01, and 0.86; the separations between the lines of sight range from 190h(-1) kpc to 1.5h(-1) Mpc at zabs = 0.4 and from 250h(-1) kpc to 2h(-1) Mpc at zabs = 0.9 (q_o = 0.5). In the pair with the smallest separation roughly half of the lines are in common, while for the pairs with the largest separations the number of lines in common is consistent with that expected from chance.
Hazard Cyril
Monier Eric
Turnshek David
No associations
LandOfFree
Lyalpha Forest Cloud Sizes at Z ~ 0.6 from a Grouping of Five QSOs 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 Lyalpha Forest Cloud Sizes at Z ~ 0.6 from a Grouping of Five QSOs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lyalpha Forest Cloud Sizes at Z ~ 0.6 from a Grouping of Five QSOs will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1176022