3.9k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Slovak Academy of SciencesSK377 papers
- Centre National de la Recherche ScientifiqueFR328 papers
- University of GroningenNL256 papers
- Instituto de Astrofísica de CanariasES218 papers
- Leiden UniversityNL201 papers
- University of AmsterdamNL199 papers
- Université Paris CitéFR193 papers
- National Institute for AstrophysicsIT192 papers
- Czech Academy of Sciences, Astronomical InstituteCZ181 papers
- Sorbonne UniversitéFR178 papers
- Max Planck Institute for AstronomyDE177 papers
- Goddard Space Flight CenterUS172 papers
15 papers · 1 filter
The possible orbital period of the nova V1493 Aquilae
Andrej Dobrotka, Michael Friedjung, Alon Retter +2
Period analysis of CCD photometry of V1493 Aql (Nova Aql 1999 no. 1) performed during 12 nights through I and R filters a few weeks after maximum is presented. The PDM method for p…
Light Variations of the Anomalous Central Star of Planetary Nebula Sh 2-71
Zdenek Mikulasek, Augustin Skopal, Miloslav Zejda +5
We present an analysis of light variations in UBVRI of the anomalous object in the center of planetary nebula Sh 2-71. We refined the linear ephemeris of the light maxima to JD{max…
The very late-stage merger IC 4200:pre-elliptical or pre-spiral?
P. Serra, S. C. Trager, J. M. van der Hulst +3
Recent observations have revealed a class of unusually HI-rich early-type galaxies. By combining observations of their morphology, stellar populations and neutral hydrogen we aim t…
A parameter to quantify dynamics of a researcher's scientific activity
S. B. Popov
I propose the coefficient, , and its modification which in a simple way reflect dynamics of scientific activity of an individual researcher. I determine as a time…
Disentangling the composite continuum of symbiotic binaries I. S-type systems
A. Skopal
We describe a method of disentangling the composite,0.12-5 microns continuum of symbiotic binaries.The observed SED is determined by the IUE/HST archival spectra and flux-points co…
Correlation between radio luminosity and X-ray timing frequencies in neutron star and black hole X-ray binaries
S. Migliari, R. P. Fender, M. van der Klis
We report on correlations between radio luminosity and X-ray timing features in X-ray binary systems containing low magnetic field neutron stars and black holes. The sample of neut…
Eta Car through the eyes of interferometers
Olivier Chesneau, R. Van Boekel, T. Herbst +6
The core of the nebula surrounding Eta Carinae has recently been observed with VLT/NACO, VLTI/VINCI, VLTI/MIDI and VLTI/AMBER in order to spatially and spectrally constrain the war…
Hjelmslev Geometry of Mutually Unbiased Bases
Metod Saniga, Michel Planat
The basic combinatorial properties of a complete set of mutually unbiased bases (MUBs) of a q-dimensional Hilbert space H\_q, q = p^r with p being a prime and r a positive integer,…
Fractal Approach to Large-Scale Galaxy Distribution
Yurij Baryshev, Pekka Teerikorpi
We present a review of the history and the present state of the fractal approach to the large-scale distribution of galaxies. Angular correlation function was used as a general ins…
Abstract algebra, projective geometry and time encoding of quantum information
Michel R. P. Planat, Metod Saniga
Algebraic geometrical concepts are playing an increasing role in quantum applications such as coding, cryptography, tomography and computing. We point out here the prominent role p…
Soft gamma repeaters and starforming galaxies
S. B. Popov
We propose that the best sites to search for SGRs outside the Local group are galaxies with active star formation. Different possibilities to observe SGR activity from these sites…
Restoration of Brightness Distributions across Quasar's Accretion Disk from Observations of High Magnification Events in Components of Gravitational Lens QSO 2237+0305
Mikhail B. Bogdanov, Anatol M. Cherepashchuk
We present a technique for the successive restoration of the branches of the one-dimensional strip brightness distribution across a quasar's accretion disk via the analysis of obse…
A Study of Synthetic and Observed H_alpha Spectra of TT Hydrae
Jan Budaj, Mercedes T. Richards, Brendan Miller
The formation and properties of accretion discs and circumstellar material in Algol-type systems is not very well understood. In order to study the underlying physics of these stru…
Wakes in Dark Matter Halos
Burkhard Fuchs
I discuss the dynamical interaction of galactic disks with the surrounding dark matter halos. In particular it is demonstrated that if the self-gravitating shearing sheet, a model…
The Impact of Gravitational Redshift on Systemic Water Maser Emission in NGC 4258
M. Spaans
NGC 4258 is well known for its 22 GHz water maser features that appear to reside in a thin Keplerian disk orbiting at R_0=0.13 pc. The influence of gravitational redshift on the le…