activity
19962024
most citedThe Discovery of the First "Changing Look" Quasar: New Insights into the Physics & Phenomenology of AGN

419 citations · 2.6k across the 36 of their papers we have counts for

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Showing 1997Show all

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astro-ph1997★ 27 cited

The 3-53 keV Spectrum of the Quasar 1508+5714: X-rays from z = 4.3

Edward C. Moran, David J. Helfand

We present a high-quality X-ray spectrum in the 3--53 keV rest-frame band of the radio-loud quasar 1508+5714, by far the brightest known X-ray source at z > 4. A simple power-law m…