Intergalactic HeII absorption in CSO 118 = HS 1157+3143

Details Intergalactic HeII absorption in CSO 118 = HS 1157+3143 Intergalactic HeII absorption in CSO 118 = HS 1157+3143

Jul 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002hst..prop.9350r&link_type=abstract

HST Proposal ID #9350

Physics

Hst Proposal Id #9350

Scientific paper

We propose to observe the HeII Gunn-Peterson effect in the z = 3 quasar CSO 118, which has been discovered in our SNAPSHOT survey to have a transparent line of sight. The aim is in particular to extend our knowledge about HeII reionization which has been observed to take place in the range z = 3.1 to z = 2.8. While existing and future FUSE observations will cover the redshift range z < 2.9, redshifts above 2.9 have been covered by HST with only 2 lines of sights.

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