activity
20042009
most citedA new approach for testing variations of fundamental constants over cosmic epochs using FIR fine-structure lines

44 citations · 175 across the 6 of their papers we have counts for

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Showing 2006Show all

2 papers · 1 filter

astro-ph2006★ 42 cited

Spectral shape of the UV ionizing background and HeII absorption at redshifts 1.8 < z < 2.9

I. I. Agafonova, S. A. Levshakov, D. Reimers +4

The shape of the UV ionizing background is reconstructed from optically thin metal absorption-line systems identified in spectra of HE2347-4342, Q1157+3143, and HS1700+6416 in the…

astro-ph2006★ 27 cited

Fluctuations of the intergalactic UV background towards two lines of sight

C. Fechner, D. Reimers

We present a reanalysis of the HeII Lyman alpha absorption towards the quasars HS1700+6416 and HE2347-4342 using new high S/N, optical observations. An alternative analysis method…