152 citations · 576 across the 19 of their papers we have counts for
19 papers
Modeling brightness temperature of sunspots using ALMA single-dish observations
F. Matković, R. Brajša, A. O. Benz +5
We model sunspot brightness temperature in the wavelength range 0.3-10mm using the Atacama Large Millimeter/submillimeter Array (ALMA) single-dish measurements together with other…
An analysis of the solar differential rotation in solar cycle No. 19 (1954-1964) determined using Kanzelhoehe sunspot group positions
Ivana Poljancic Beljan, Luka Sibenik, Tomislav Jurkic +7
We study solar differential rotation (DR) for solar cycle No. 19 (1954-1964) by tracing sunspot groups on the sunspot drawings of Kanzelhoehe Observatory for Solar and Environmenta…
Modeling brightness temperature of prominences on the solar disk using ALMA single-dish observations
F. Matković, R. Brajša, A. O. Benz +5
Prominences (PRs) are among the most common solar phenomena, yet their full physical picture, particularly their chromospheric mm emission, remains incomplete. The new Atacama Larg…
Coronal bright point statistics II. Magnetic polarities and mini loops
I. Kraus, Ph. -A. Bourdin, J. Zender +2
Context. The solar corona maintains temperatures of a million Kelvin or more. The plasma heating mechanisms responsible for these extreme temperatures are still unclear. Large regi…
Calculated brightness temperatures of solar structures compared with ALMA and Metsähovi measurements
F. Matković, R. Brajša, M. Kuhar +6
The Atacama Large Millimeter/submillimeter Array (ALMA) allows for solar observations in the wavelength range of 0.310 mm, giving us a new view of the chromosphere. The measured…
Coronal bright point statistics I. Lifetime, shape, and coronal co-rotation
I. Kraus, Ph. -A. Bourdin, J. Zender +2
Context. The corona of the Sun is the part of the solar atmosphere with temperatures of over one million Kelvin, which needs to be heated internally in order to exist. This heating…
A prediction for the 25th solar cycle maximum amplitude
R. Brajša, G. Verbanac, M. Bandić +3
The minimum - maximum method, belonging to the precursor class of the solar activity forecasting methods, is based on a linear relationship between relative sunspot number in the m…
A census of Coronal Mass Ejections on solar-like stars
M. Leitzinger, P. Odert, R. Greimel +8
Coronal Mass Ejections (CMEs) may have major importance for planetary and stellar evolution. Stellar CME parameters, such as mass and velocity, have yet not been determined statist…
Estimate of the Accretion Disk Size in the Gravitationally Lensed Quasar HE 0435-1223 using Microlensing Magnification Statistics
C. Fian, E. Mediavilla, J. Jiménez-Vicente +2
We present a measurement of the accretion disk size of the quadruple lensed quasar HE 0435-1223 from well-sampled 13-yr COSMOGRAIL optical light curves. Using accurate time delays…
Microlensing and Intrinsic Variability of the Broad Emission Lines of Lensed Quasars
C. Fian, Eduardo Guerras, E. Mediavilla +5
We study the BELs in a sample of 11 gravitationally lensed quasars with at least two epochs of observation to identify intrinsic variability and to disentangle it from microlensing…
- A tool for multiband light curve modeling of planetary transits and stellar spots
Ines G. Juvan, M. Lendl, P. E. Cubillos +5
Several studies have shown that stellar activity features, such as occulted and non-occulted starspots, can affect the measurement of transit parameters biasing studies of transit…
Long-term trends of magnetic bright points: I. Number of MBPs at disc centre
D. Utz, R. Muller, S. Thonhofer +5
Context. The Sun shows an activity cycle that is caused by its varying global magnetic field. During a solar cycle, sunspots, i.e. extended regions of strong magnetic fields, occur…
SSALMON - The Solar Simulations for the Atacama Large Millimeter Observatory Network
S. Wedemeyer, T. Bastian, R. Brajsa +27
The Solar Simulations for the Atacama Large Millimeter Observatory Network (SSALMON) was initiated in 2014 in connection with two ALMA development studies. The Atacama Large Millim…
Future mmVLBI Research with ALMA: A European vision
R. P. J. Tilanus, T. P. Krichbaum, J. A. Zensus +165
Very long baseline interferometry at millimetre/submillimetre wavelengths (mmVLBI) offers the highest achievable spatial resolution at any wavelength in astronomy. The anticipated…
The DWARF project: Eclipsing binaries - precise clocks to discover exoplanets
T. Pribulla, M. Vaňko, M. Ammler - von Eiff +53
We present a new observational campaign, DWARF, aimed at detection of circumbinary extrasolar planets using the timing of the minima of low-mass eclipsing binaries. The observation…
Time series of high resolution photospheric spectra in a quiet region of the Sun. I. Analysis of global and spatial variations of line parameters
K. G. Puschmann, M. Vazquez, J. A. Bonet +2
A 50 min time series of one-dimensional slit-spectrograms, taken in quiet sun at disk center, observed at the German Vacuum Tower Telescope (Observatorio del Teide), was used to st…
Hemispheric Sunspot Numbers R_n and R_s: Catalogue and N-S asymmetry analysis
M. Temmer, A. Veronig, A. Hanslmeier
Sunspot drawings are provided on a regular basis at the Kanzelhoehe Solar Observatory, Austria, and the derived relative sunspot numbers are reported to the Sunspot Index Data Cent…
Relative timing of solar flares observed at different wavelengths
A. Veronig, B. Vrsnak, M. Temmer +1
The timing of 503 solar flares observed simultaneously in hard X-rays, soft X-rays and H-alpha is analyzed. We investigated the start and the peak time differences in different wav…
Investigation of the Neupert effect in solar flares. I. Statistical properties and the evaporation model
A. Veronig, B. Vrsnak, B. R. Dennis +3
Based on a sample of 1114 flares observed simultaneously in hard X-rays (HXR) by the BATSE instrument and in soft X-rays (SXR) by GOES, we studied several aspects of the Neupert ef…