5k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR738 papers
- University of CambridgeGB466 papers
- European Southern ObservatoryCL427 papers
- Center for Astrophysics Harvard & SmithsonianUS421 papers
- University of EdinburghGB387 papers
- University of GenevaCH380 papers
- University of WarwickGB332 papers
- Keele UniversityGB330 papers
- Royal ObservatoryGB329 papers
- Instituto de Astrofísica de CanariasES306 papers
- Scottish Universities Physics AllianceGB303 papers
- Space Telescope Science InstituteUS302 papers
12 papers · 1 filter
UV Spectroscopy of AB Doradus with the Hubble Space Telescope. Impulsive flares and bimodal profiles of the CIV 1549 line in a young star
O. Vilhu, P. Muhli, J. Huovelin +3
We observed AB Doradus, a young and active late type star (K0 - K2 IV-V, P= 0.514 d) with the Goddard High Resolution Spectrograph of the post-COSTAR Hubble Space Telescope with th…
Localized magnetic reconnection as a cause of extraplanar diffuse ionised in the halo
G. T. Birk, H. Lesch, T. Neukirch
Many observations indicate the occurrence of ionised gas in the distant halos of galaxies (including our own). Since photoionisation by stars (mainly O stars, young or evolved low-…
Helmet streamers with triple structure: Weakly two-dimensional stationary states
T. Wiegelmann, K. Schindler, T. Neukirch
Recent observations of the solar corona with the LASCO coronagraph on board of the SOHO spacecraft have revealed the occurrence of triple helmet streamers even during solar minimum…
Observations of the SW Sextantis Star UU Aquarii
D. W. Hoard, M. D. Still, Paula Szkody +2
We present 14 nights of medium resolution (1-2Å) spectroscopy of the eclipsing cataclysmic variable UU Aquarii obtained during a high accretion state in 1995 August-October. UU Aqr…
An approximate self-consistent theory of the magnetic field of fluted penumbrae
T. Neukirch, P. C. H. Martens
A self-consistent mathematical description of the magnetic field of fluted sunspot penumbrae is presented. This description is based on an expansion of the nonlinear force-free mag…
Evolution of Horizontal Branch Stars in Globular Clusters: The Interesting Case of V79 in M3
C. Clement, R. W. Hilditch, J. Kaluzny +1
New observations of variable stars in the globular cluster M3 reveal that the RR Lyrae variable V79 is a double-mode (RRd) variable with the first overtone mode dominating. In all…
Search for Variable Stars in the Globular Cluster M3
J. Kaluzny, R. W. Hilditch, C. Clement +1
We describe here results of a photometric time-sequence survey of the globular cluster M3 (NGC 5272), in a search for contact and detached eclipsing binary stars. We have discovere…
The 1996 Outburst of GRO J1655-40
R. I. Hynes, C. A. Haswell, R. P. Fender +7
During 1996 the soft-X-ray transient and superluminal jet source GRO J1655-40 was observed in outburst with a multiwavelength campaign including HST, RXTE, CGRO and ground based fa…
HST Observations of IP Pegasi in Quiescence: The Pre-Eclipse Spectrum
D. W. Hoard, Raymundo Baptista, Michael Eracleous +5
We present time-resolved HST UV spectroscopy and ground-based optical photometry of the dwarf nova IP Peg in a quiescent state. The observations were obtained prior to an eclipse,…
Kilohertz QPO Peak Separation Is Not Constant in Scorpius X-1
Michiel van der Klis, Rudy A. D. Wijnands, Keith Horne +1
We report on a series of twenty ~10^5 c/s, 0.125 msec time-resolution RXTE observations of the Z source and low-mass X-ray binary Scorpius X-1. Twin kilohertz quasi-periodic oscill…
Twisting 2-cocycles for the construction of new non-standard quantum groups
Andrew D. Jacobs, J. F. Cornwell
We introduce a new class of 2-cocycles defined explicitly on the generators of certain multiparameter standard quantum groups. These allow us, through the process of twisting the f…
Phase-resolved high-resolution spectrophotometry of the eclipsing polar HU Aquarii
Axel D. Schwope, Karl-Heinz Mantel, Keith Horne
We present phase-resolved spectroscopy of the bright, eclipsing polar HU Aqr obtained with high time (~30sec) and spectral (1.6 A) resolution when the system was in a high accretio…