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20052023
most citedA statistical relation between the X-ray spectral index and Eddington ratio of active galactic nuclei in deep surveys

214 citations · 3.3k across the 73 of their papers we have counts for

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Showing 2008 · astro-phShow all

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astro-ph2008★ 25 cited

A Synchronized Variation of the 6.7 GHz Methanol Maser in Cepheus A

Koichiro Sugiyama, Kenta Fujisawa, Akihiro Doi +5

We present the results of daily monitoring of 6.7 GHz methanol maser in Cepheus A (Cep A) using Yamaguchi 32-m radio telescope as well as the results of imaging observations conduc…