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
17 papers · 1 filter
Reconstructing images of gravitational lenses with regularizing algorithms
E. Koptelova, E. Shimanovskaya, B. Artamonov +3
This note addresses possible applications of the Tikhonov regularization to image reconstruction of gravitational lens systems. Several modifications of the regularization algorith…
Radioquiet isolated neutron stars: old and young, nearby and far away, dim and very dim
S. B. Popov, A. Treves, R. Turolla
We briefly discuss the evolutionary path and observational appearance of isolated neutron stars (INSs) focusing on radioquiet objects. There are many reasons to believe that these…
Holes and high velocity HI in NGC 6946
Rense Boomsma, Tom Oosterloo, Thijs van der Hulst +2
We are studying the properties of the holes and the high velocity gas in NGC 6946. Here we present some puzzling results.
Self-Induced Formaton of Metal-Rich Globulars in Bulges?
Valery V. Kravtsov
Taken together, key latest observations assume that (i) old metal-rich globular cluster populations (MRGCPs) in bulges were able to form due to essentially increased, self(internal…
AD Leonis: Flares observed by XMM-Newton and Chandra
E. J. M. van den Besselaar, A. J. J. Raassen, R. Mewe +3
The M-dwarf AD Leonis has been observed with the Reflection Grating Spectrometers and the European Photon Imaging Camera aboard XMM-Newton and also with the Low Energy Transmission…
The spectrum of the roAp star HD 101065(Przybylski's star) in the Li I 6708 A spectral region
A. V. Shavrina, N. S. Polosukhina, Ya. V. Pavlenko +8
We carried out a detailed analysis of spectra of the unique roAp star HD 101065 (Przybylski's star) near the resonance doublet Li I 6708 A, using a most complete line list includin…
Stellar black hole mass function: determination and possible implications for fundamental gravity
Konstantin Postnov
We discuss masses of stellar black holes found in binary systems and errors in their determination. The observed mass distribution has a broad shape within the range …
Formation of the Galactic Halo
Ortwin Gerhard
Recent observational and theoretical work suggests that the formation of the Galactic stellar halo involved both dissipative processes and the accretion of subfragments. With prese…
Disc-jet coupling in an atoll-type neutron star X-ray binary: 4U 1728-34 (GX 354-0)
Simone Migliari, Rob Fender, Michael Rupen +4
We have analysed 12 simultaneous radio (VLA) and X-ray (RXTE) observations of the atoll-type X-ray binary 4U 1728-34, performed in two blocks in 2000 and 2001. We have found that t…
Discovery of the eclipse in the symbiotic binary Z Andromedae
A. Skopal
Our photometric observations of the symbiotic binary Z And during its recent (2000 -- 2003) active phase revealed a minimum in the U, B and V light curves (LC) at the position of t…
Formation and Evolution of Compact Stellar X-ray Sources
Thomas M. Tauris, Ed van den Heuvel
In this chapter we review the formation and evolution of compact binaries with neutron star and/or black hole components (i.e. LMXBs, HMXBs, binary pulsars). After an introduction…
In the Kitchen of Dust Modeling
N. V. Voshchinnikov
Dust grains have been detected in various astronomical objects. Interpretation of observations of dusty objects includes three components: 1) determination of the materials which c…
On an Intriguing Signature-Reversal Exhibited by Cremonian Spacetimes
Metod Saniga
It is shown that a generic quadro-quartic Cremonian spacetime, which is endowed with one spatial and three time dimensions, can continuously evolve into a signature-reversed config…
The SED in the hot continuum of the symbiotic binary AR Pavonis. I. Tests with the current models
A. Skopal
We present the spectral energy distribution (SED) in the continuum of the eclipsing symbiotic binary AR Pav between 0.12 and 3.4 microns. This revealed a high luminosity of the hot…
Geometry of Psychological Time
Metod Saniga
The paper reviews the most illustrative cases of the "peculiar/anomalous" experiences of time (and, to a lesser extent, also space) and discusses a simple algebraic geometrical mod…
Investigation of the obscuring circumnuclear torus in the active galaxy Mrk231
Hans-Rainer Kl"ockner, Willem A. Baan, Michael A. Garrett
Here we report on observations of powerful hydroxyl (OH) line emissions that trace the obscuring material within the circumnuclear environment of the galaxy Markarian 231. The hydr…
Geometry of Time and Dimensionality of Space
Metod Saniga
One of the most distinguished features of our algebraic geometrical, pencil concept of space-time is the fact that spatial dimensions and time stand, as far as their intrinsic stru…