activity
19982024
most citedHigh variability in Vela X-1: giant flares and off states

140 citations · 1.2k across the 51 of their papers we have counts for

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Showing 2016Show all

5 papers · 1 filter

astro-ph.HE2016

The Goodness of Simultaneous Fits in ISIS

Matthias Kühnel, Sebastian Falkner, Christoph Grossberger +15

In a previous work, we introduced a tool for analyzing multiple datasets simultaneously, which has been implemented into ISIS. This tool was used to fit many spectra of X-ray binar…

astro-ph.HE2016

Chandra X-Ray Spectroscopy of the Focused Wind in the Cygnus X-1 System. II. The Nondip Spectrum in the Low/Hard State - Modulations with Orbital Phase

Ivica Miškovičová, Natalie Hell, Manfred Hanke +14

The accretion onto the black hole in the system HDE 226868/Cygnus X-1 is powered by the strong line driven stellar wind of the O-type donor star. We study the X-ray properties of t…

astro-ph.HE2016

Evidence for an Evolving Cyclotron Line Energy in 4U 1538-522

Paul B. Hemphill, Richard E. Rothschild, Felix Fürst +6

We have performed a full time- and luminosity-resolved spectral analysis of the high-mass X-ray binary 4U 1538-522 using the available RXTE, INTEGRAL, and Suzaku data, examining bo…

astro-ph.HE2016

Suzaku observations of the 2013 outburst of KS 1947+300

Ralf Ballhausen, Matthias Kühnel, Katja Pottschmidt +9

We report on the timing and spectral analysis of two Suzaku observations with different flux levels of the high-mass X-ray binary KS 1947+300 during its 2013 outburst. In agreement…

astro-ph.HE2016

Revealing the broad iron Kalpha line in Cygnus X-1 through simultaneous XMM-Newton, RXTE, and INTEGRAL observations

Refiz Duro, Thomas Dauser, Victoria Grinberg +15

We report on the analysis of the broad Fe Kalpha line feature of Cygnus X-1 in the spectra of four simultaneous hard intermediate state observations made with the X-ray Multiple Mi…