129 citations
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Showing 2007Show all
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astro-ph2007★ 66 cited
Detection of GRB 060927 at z = 5.47: Implications for the Use of Gamma-Ray Bursts as Probes of the End of the Dark Ages
A. E. Ruiz-Velasco, H. Swan, E. Troja +54
We report on follow-up observations of the GRB 060927 using the ROTSE-IIIa telescope and a suite of larger aperture ground-based telescopes. An optical afterglow was detected 20 s…
astro-ph2007★ 19 cited
Is the dependence of spectral index on luminosity real in optically selected AGN samples?
Sumin Tang, Shuang Nan Zhang, Philip F. Hopkins
We critically examine the dependence of spectral index on luminosity in optically selected AGN samples. An analysis of optically selected high-redshift quasars showed an anti-corre…