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40 papers · 1 filter
Characterizing black hole variability with nonlinear methods: the case of the X-ray Nova 4U 1543-47
M. Gliozzi, C. Raeth, I. E. Papadakis +1
We investigate the possible nonlinear variability properties of the black hole X-ray nova 4U1543-47 to complement the temporal studies based on linear techniques, and to search for…
XMM-Newton long-look observation of the narrow line Seyfert 1 galaxy PKS0558-504; I: Spectral analysis
I. E. Papadakis, W. Brinkmann, M. Gliozzi +3
We present results from the spectral analysis of a long XMM-Newton observation of the radio-loud NLS1 galaxy PKS0558-504. The source is highly variable, on all sampled time scales.…
Optical spectroscopy of 20 Be/X-ray Binaries in the Small Magellanic Cloud
Vallia Antoniou, Despina Hatzidimitriou, Andreas Zezas +1
We present a large sample (20 in total) of optical spectra of Small Magellanic Cloud (SMC) High-Mass X-ray Binaries obtained with the 2dF spectrograph at the Anglo-Australian Teles…
Recent discoveries of supersoft X-ray sources in M 31
M. Henze, W. Pietsch, F. Haberl +9
Classical novae (CNe) have recently been reported to represent the major class of supersoft X-ray sources (SSSs) in the central area of our neighbouring galaxy M 31. This paper pre…
A simple model to interpret the ultraviolet, optical and infrared SEDs of galaxies
Elisabete da Cunha, Stephane Charlot, David Elbaz
We present a simple, largely empirical but physically motivated model, which is designed to interpret consistently multi-wavelength observations from large samples of galaxies in t…
Comparison of Chiral Metamaterial Designs for Repulsive Casimir Force
R. Zhao, Th. Koschny, E. N. Economou +1
In our previous work [Phys. Rev. Lett. 103, 103602 (2009)], we found that repulsive Casimir forces could be realized by using chiral metamaterials if the chirality is strong enough…