91 citations · 615 across the 31 of their papers we have counts for
Showing 2018 · astro-ph.GAShow all
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astro-ph.GA2018★ 17 cited
Scaling of X-ray spectral properties of a black hole in the Seyfert 1 galaxy NGC~7469
Elena Seifina, Lev Titarchuk, Lyubov Ugolkova
We present our analysis of X-ray spectral properties observed from the Seyfrert 1 galactic nucleus NGC~7469 using the RXTE and ASCA observations. We demonstrate strong observationa…
astro-ph.GA2018★ 20 cited
NGC 4051: Black hole mass and photon index-mass accretion rate correlation
Elena Seifina, Alexandre Chekhtman, Lev Titarchuk
We present a discovery of the correlation between the X-ray spectral (photon) index and mass accretion rate observed in AGN NGC 4051. We analyzed spectral transition episodes obser…