A New Observational Upper Limit to the Low Redshift Ionizing Background Radiation
نویسندگان
چکیده
We report a new Fabry-Perot search for Hα emission from the intergalactic cloud HI 1225+01 in an attempt to measure the low redshift ionizing background radiation. We set a new 2σ upper limit on Hα emission of 8 mR (5 × 10 ergs cm s arcsec). Conversion of this limit to limits on the strength of
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