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
42 papers · 1 filter
Joint analysis of two-way laser range and one-way frequency measurements for the gravitational redshift experiment with the RadioAstron spacecraft
M. V. Zakhvatkin, D. A. Litvinov
We consider the problem of joint analysis of two-way laser range and one-way frequency measurements in high-precision tests of general relativity with spacecrafts. Of main interest…
Doily as Subgeometry of a Set of Nonunimodular Free Cyclic Submodules
Metod Saniga, Edyta Bartnicka
It is shown that there exists a particular associative ring with unity of order 16 such that the relations between nonunimodular free cyclic submodules of its two-dimensional free…
T Tauri stars in the SuperWASP and NSVS surveys
Ľubomír Hambálek, Martin Vaňko, Ernst Paunzen +1
We present a study of the long-term optical variability of young T Tauri stars using previously unpublished data from the SuperWASP project. Other publicly available photometry fro…
TYC 3637-1152-1 - a High Amplitude delta Scuti star with peculiar pulsational properties
Ernst Paunzen, Klaus Bernhard, Moriz Frauenberger +16
In some delta Scuti stars, only one or two radial modes are excited (usually the fundamental mode and/or first overtone mode) and the observed peak-to-peak amplitudes exceed 0.3 ma…
IAU MDC Meteor Orbits Database -- A Sample of Radio-Meteor Data from the Hissar Observatory
M. Narziev, R. P. Chebotarev, T. J. Jopek +10
We announce an upgrade of the IAU MDC photographic and video meteor orbits database. A sample of 8916 radio-meteor data determined by the radar observations at the Hissar (Gissar)…
Properties of the inner penumbral boundary and temporal evolution of a decaying sunspot
M. Benko, S. J. González Manrique, H. Balthasar +3
It was empirically determined that the umbra-penumbra boundaries of stable sunspots are characterized by a constant value of the vertical magnetic field. We analyzed the evolution…
Why the angular distribution of the top decay lepton is unchanged by anomalous coupling
Rohini M. Godbole, Michael E. Peskin, Saurabh D. Rindani +1
We give a simple physical argument to understand the observation that the angular distribution of the top decay lepton depends only on the polarisation of the top and is independen…
Evidence for Very Early Migration of the Solar System Planets from the Patroclus-Menoetius binary Jupiter Trojan
David Nesvorny, David Vokrouhlicky, William F. Bottke +1
The orbital distribution of trans-Neptunian objects provides strong evidence for the radial migration of Neptune. The outer planets' orbits are thought to have become unstable duri…
X-ray and UV emission of the ultrashort-period, low-mass eclipsing binary system BX Tri
V. Perdelwitz, S. Czesla, J. Robrade +2
Close binary systems provide an excellent tool to determine stellar parameters such as radii and masses with a high degree of precision. Due to the high rotational velocities, most…
Transit Timing Variations and linear ephemerides of confirmed Kepler transiting exoplanets
Pavol Gajdoš, Martin Vaňko, Štefan Parimucha
We determined new linear ephemerides of transiting exoplanets using long-cadence de-trended data from quarters Q1 to Q17 of Kepler mission. We analysed TTV diagrams of 2098 extraso…
The Kepler view of magnetic chemically peculiar stars
Stefan Hümmerich, Zdenek Mikulášek, Ernst Paunzen +6
Magnetic chemically peculiar (mCP) stars exhibit complex atmospheres that allow the investigation of such diverse phenomena as atomic diffusion, magnetic fields, and stellar rotati…
Optical observations of "hot" novae returning to quiescence
P. Zemko, S. Ciroi, M. Orio +10
We have monitored the return to quiescence of novae previously observed in outburst as supersoft X-ray sources, with optical photometry of the intermediate polar (IP) V4743 Sgr and…
Statistical analysis of UV spectra of a quiescent prominence observed by IRIS
S. Jejčič, P. Schwartz, P. Heinzel +2
The paper analyzes the structure and dynamics of a quiescent prominence that occurred on October 22, 2013. We aim to determine the physical characteristics of the observed prominen…
Physical properties of beta Lyr A and its opaque accretion disk
D. Mourard, M. Broz, J. Nemravova +23
Mass exchange and mass loss in close binaries can significantly affect their evolution, but a complete self-consistent theory of these processes is still to be developed. Processes…
Search for Nearby Ultracool Compact Binaries in Gaia DR2
D. V. Denisenko, I. Larin
The information contained in the Gaia Second Data Release (DR2) allows to search for the unusual objects with the pre-selected properties, literally constructing the stars with the…
Optical Depth and Vertical Profile of Stratospheric Aerosol based on Multi-Year Polarization Measurements of the Twilight Sky
Oleg S. Ugolnikov, Igor A. Maslov
The method of detection of light scattering on stratospheric aerosol particles on the twilight sky background is considered. It is based on the data on sky intensity and polarizati…
STROBE-X: A probe-class mission for X-ray spectroscopy and timing on timescales from microseconds to years
Paul S. Ray, Zaven Arzoumanian, Søren Brandt +30
We describe the Spectroscopic Time-Resolving Observatory for Broadband Energy X-rays (STROBE-X), a probe-class mission concept that will provide an unprecedented view of the X-ray…
Temporal evolution of arch filaments as seen in He I 10830 Å
S. J. González Manrique, C. Kuckein, M. Collados +7
We study the evolution of an arch filament system (AFS) and of its individual arch filaments to learn about the processes occurring in them. We observed the AFS at the GREGOR solar…
Revisiting the science case for near-UV spectroscopy with the VLT
C. J. Evans, B. Barbuy, B. Castilho +8
In the era of Extremely Large Telescopes, the current generation of 8-10m facilities are likely to remain competitive at far-blue visible wavelengths for the foreseeable future. Hi…
Veldkamp Spaces of Low-Dimensional Ternary Segre Varieties
Metod Saniga, Jérôme Boulmier, Maxime Pinard +1
Making use of the `Veldkamp blow-up' recipe, introduced by Saniga and others (Ann. Inst. H. Poincar\' e D2 (2015) 309) for binary Segre varieties, we study geometric hyperplanes an…
The optical characteristics of the dust of sungrazing comet C/2012 S1 (ISON) observed at large heliocentric distances
Oleksandra Ivanova, Volodymyr Reshetnyk, Yury Skorov +7
We present an analysis of the photometric and spectroscopic data of the comet C/2012 S1 (ISON) observed at the heliocentric distances of 6.21÷4.81 AU. The photometric observations…
Asynchronous polar V1500 Cyg: orbital, spin and beat periods
E. P. Pavlenko, P. A. Mason, A. A. Sosnovskij +7
The bright Nova Cygni 1975 is a rare nova on a magnetic white dwarf (WD). Later it was found to be an asynchronous polar, now called V1500 Cyg. Our multisite photometric campaign o…
OSSOS. VII. 800+ trans-Neptunian objects - the complete data release
Michele T. Bannister, Brett J. Gladman, J. J. Kavelaars +33
The Outer Solar System Origins Survey (OSSOS), a wide-field imaging program in 2013-2017 with the Canada-France-Hawaii Telescope, surveyed 155 deg of sky to depths of $m_r =…
Repeated transient jets from a warped disk in the symbiotic prototype Z And: A link to the long-lasting active phase
Augustin Skopal, Taya. N. Tarasova, Marek Wolf +2
Active phases of some symbiotic binaries survive for a long time from years to decades. The accretion process onto a white dwarf (WD) sustaining long-lasting activity, and sometime…