204 citations · 1.6k across the 32 of their papers we have counts for
9 papers · 1 filter
Evidence of Compton cooling during an X-ray flare supports a neutron star nature of the compact object in 4U1700-37
M. Martinez-Chicharro, J. M. Torrejón, L. Oskinova +5
Based on new Chandra X-ray telescope data, we present empirical evidence of plasma Compton cooling during a flare in the non pulsating massive X-ray binary 4U1700-37. This behaviou…
Stellar population of the superbubble N206 in the LMC I. Analysis of the Of-type stars
Varsha Ramachandran, R. Hainich, W. -R. Hamann +5
Massive stars are the key agents of feedback. Consequently, quantitative analysis of massive stars are required to understand how the feedback of these objects shapes/ creates the…
A combined HST and XMM-Newton campaign for the magnetic O9.7 V star HD 54879: towards constraining the weak-wind problem of massive stars
T. Shenar, L. M. Oskinova, S. P. Järvinen +7
Context: HD 54879 (O9.7 V) is one of a dozen O-stars for which an organized atmospheric magnetic field has been detected. To gain insights into the interplay between atmospheres, w…
Coupling hydrodynamics with comoving frame radiative transfer: II. Stellar wind stratification in the high-mass X-ray binary Vela X-1
Andreas A. C. Sander, Felix Fürst, Peter Kretschmar +5
CONTEXT: Vela X-1, a prototypical high mass X-ray binary (HMXB), hosts a neutron star (NS) in a close orbit around an early-B supergiant donor star. Accretion of the donor star's w…
On the binary nature of massive blue hypergiants: high-resolution X-ray spectroscopy suggests that Cyg OB2 12 is a colliding wind binary
L. M. Oskinova, D. P. Huenemoerder, W. -R. Hamann +4
The blue hypergiant Cyg OB2-12 (B3Ia+) is a representative member of the class of very massive stars in a poorly understood evolutionary stage. We obtained its high-resolution X-ra…
Observational properties of massive black hole binary progenitors
R. Hainich, L. M. Oskinova, T. Shenar +6
The first directly detected gravitational waves (GW 150914) were emitted by two coalescing black holes (BHs) with masses of ~36Msun and ~29Msun. Several scenarios have been propose…