91 citations · 615 across the 31 of their papers we have counts for
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astro-ph.HE2015★ 22 cited
Scaling of the photon index vs mass accretion rate correlation and estimate of black hole mass in M101 ULX-1
Lev Titarchuk, Elena Seifina
We report the results of Swift and Chandra observations of an ultra-luminous X-ray source, ULX-1 in M101. We show strong observational evidence that M101 ULX-1 undergoes spectral t…
astro-ph.SR2015★ 15 cited
BEPPOSAX and RXTE spectral study of the low-mass X-ray binary 4u~1705-44. Spectral hardening during the banana branch
Elena Seifina, Lev Titarchuk, Chris Shrader +1
We analyze the X-ray spectra of the atoll 4U~1705-44 when the source undergoes the island-banana state transition. We use the Rossi X-ray Timing Explorer (RXTE) and BeppoSAX observ…