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
32 papers · 1 filter
Dynamics of isolated magnetic bright points derived from Hinode/SOT G-band observations
D. Utz, A. Hanslmeier, R. Muller +3
Small-scale magnetic fields in the solar photosphere can be identified in high-resolution magnetograms or in the G-band as magnetic bright points (MBPs). Rapid motions of these fie…
The spectroscopic evolution of the symbiotic star AG Draconis. I.The O VI Raman, Balmer, and helium emission line variations during the outburst of 2006-2008
S. N. Shore, G. M. Wahlgren, K. Genovali +6
AG Dra is one of a small group of low metallicity S-type symbiotic binaries with K-type giants that undergoes occasional short-term outbursts of unknown origin. Our aim is to study…
Searching for flickering statistics in T CrB
A. Dobrotka, L. Hric, J. Casares +3
We analyze -band photometry of the aperiodic variability in T CrB. By applying a simple idea of angular momentum transport in the accretion disc, we have developed a method to s…
Magnetic loop emergence within a granule
P. Gömöry, C. Beck, H. Balthasar +4
We investigate the temporal evolution of magnetic flux emerging within a granule in the quiet-Sun internetwork at disk center. We combined IR spectropolarimetry performed in two Fe…
Spitzer observations of the asteroid-comet transition object and potential spacecraft target 107P (4015) Wilson-Harrington
J. Licandro, H. Campins, M. Kelley +15
Context. Near-Earth asteroid-comet transition object 107P/ (4015) Wilson-Harrington is a possible target of the joint European Space Agency (ESA) and Japanese Aerospace Exploration…
Geometric Hyperplanes of the Near Hexagon L_3 times GQ(2, 2)
Metod Saniga, Peter Levay, Michel Planat +1
Having in mind their potential quantum physical applications, we classify all geometric hyperplanes of the near hexagon that is a direct product of a line of size three and the gen…
Shell Galaxies: Dynamical Friction, Gradual Satellite Decay and Merger Dating
Ivana Ebrova, Bruno Jungwiert, Gabriela Canalizo +2
With the goal to refine modelling of shell galaxies and the use of shells to probe the merger history, we develop a new method for implementing dynamical friction in test-particle…
The origin of the supersoft X-ray--optical/UV flux anticorrelation in the symbiotic binary AG Draconis
A. Skopal, M. Sekeras, R. Gonzalez-Riestra +1
AG Draconis produces a strong supersoft X-ray emission.The X-ray and optical/UV fluxes are in a strict anticorrelation throughout the active and quiescent phases. The aim of this c…
The Veldkamp Space of the Smallest Slim Dense Near Hexagon
Richard M. Green, Metod Saniga
We give a detailed description of the Veldkamp space of the smallest slim dense near hexagon. This space is isomorphic to PG(7, 2) and its 2^8 - 1 = 255 Veldkamp points (that is, g…
Spin-down rate and inferred dipole magnetic field of the soft gamma-ray repeater SGR 1627-41
P. Esposito, M. Burgay, A. Possenti +11
Using Chandra data taken on 2008 June, we detected pulsations at 2.59439(4) s in the soft gamma-ray repeater SGR 1627-41. This is the second measurement of the source spin period a…
Scale Length of Disk Galaxies
Kambiz Fathi, Mark Allen, Eduardo Gonzalez-Solares +2
As a part of a Euro-VO research initiative, we have undertaken a programme aimed at studying the scale length of 54909 Sa-Sd spiral galaxies from the SDSS DR6 catalogue. We have re…
The 2008 August 1 Eclipse Solar-Minimum Corona Unraveled
Jay M. Pasachoff, Vojtech Rusin, Miloslav Druckmuller +3
We discuss results stemming from observations of the white-light and [Fe XIV] emission corona during the total eclipse of the Sun of 2008 August 1, in Mongolia (Altaj region) and i…
Measuring the cosmic ray acceleration efficiency of a supernova remnant
E. A. Helder, J. Vink, C. G. Bassa +7
Cosmic rays are the most energetic particles arriving at earth. Although most of them are thought to be accelerated by supernova remnants, the details of the acceleration process a…
Survey of Period Variations of Superhumps in SU UMa-Type Dwarf Novae
Taichi Kato, Akira Imada, Makoto Uemura +60
We systematically surveyed period variations of superhumps in SU UMa-type dwarf novae based on newly obtained data and past publications. In many systems, the evolution of superhum…
Discovery of extended X-ray emission around the highly magnetic RRAT J1819-1458
N. Rea, M. A. McLaughlin, B. M. Gaensler +7
We report on the discovery of extended X-ray emission around the high magnetic field Rotating Radio Transient J1819-1458. Using a 30ks Chandra ACIS-S observation, we found signific…
Photometry of Three Superoutbursts of the SU UMa-type Dwarf Nova, SW Ursae Majoris
Yuichi Soejima, Daisaku Nogami, Taichi Kato +16
We investigated the superhump evolution, analysing optical photometric observations of the 2000 February-March, the 2002 October-November, and the 2006 September superoutbursts of…
Moebius Pairs of Simplices and Commuting Pauli Operators
Hans Havlicek, Boris Odehnal, Metod Saniga
There exists a large class of groups of operators acting on Hilbert spaces, where commutativity of group elements can be expressed in the geometric language of symplectic polar spa…
Analysis of hard X-ray eclipse in SS433 from INTEGRAL observations
A. M. Cherepashchuk, R. A. Sunyaev, K. A. Postnov +2
The analysis of hard X-ray INTEGRAL observations (2003-2008) of superaccreting galactic microquasar SS433 at precessional phases of the source with the maximum disk opening angle i…
The nature of the light variability of the silicon star HR 7224
J. Krticka, Z. Mikulasek, G. W. Henry +4
Although photometric variations of chemically peculiar (CP) stars are frequently used to determine their rotational periods, the detailed mechanism of their light variability remai…
SDSS J080434.20+510349.2: Eclipsing WZ Sge-Type Dwarf Nova with Multiple Rebrightenings
Taichi Kato, Elena P. Pavlenko, Hiroyuki Maehara +8
We observed the 2006 superoutburst of SDSS J080434.20+510349.2 during its plateau phase, rebrightening phase, and post-superoutburst final decline. We found that this object is a g…
Black Hole Entropy and Finite Geometry
Péter Lévay, Metod Saniga, Péter Vrana +1
It is shown that the symmetric entropy formula describing black holes and black strings in D=5 is intimately tied to the geometry of the generalized quadrangle GQ…
SN 2008S: an electron capture SN from a super-AGB progenitor?
M. T. Botticella, A. Pastorello, S. J. Smartt +31
We present comprehensive photometric and spectroscopic observations of the faint transient SN 2008S discovered in NGC 6946. SN 2008S exhibited slow photometric evolution and almost…
The Veldkamp Space of GQ(2,4)
Metod Saniga, Richard M. Green, Peter Levay +2
It is shown that the Veldkamp space of the unique generalized quadrangle GQ(2,4) is isomorphic to PG(5,2). Since the GQ(2,4) features only two kinds of geometric hyperplanes, namel…
Modelling magnetars' high energy emission through Resonant Cyclotron Scattering
D. Gotz, N. Rea, S. Zane +2
We present a systematic fit of a model of resonant cyclotron scattering (RCS) to the X and soft gamma-ray data of four magnetars, including anomalous X-ray pulsars, and soft gamma…