Astronomy and Astrophysics: a European journal Journal

Research

keywords

• 0201 Astronomical and Space Sciences

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publication venue for

• Mimicking spectropolarimetric inversions using convolutional neural networks 2020
• Ca II H&K stellar activity parameter: a proxy for extreme ultraviolet stellar fluxes 2020
• A data-driven approach to constraining the atmospheric temperature structure of the ultra-hot Jupiter KELT-9b 2020
• A multi-chord stellar occultation by the large trans-Neptunian object (174567) Varda 2020
• Dynamically important magnetic fields near the event horizon of Sgr A* 2020
• The spatially resolved broad line region of IRAS 09149−6206 2020
• Direct confirmation of the radial-velocity planet β Pictoris c 2020
• Helicity proxies from linear polarisation of solar active regions 2020
• Non-local thermodynamic equilibrium transmission spectrum modelling of HD 209458b 2020
• Event Horizon Telescope imaging of the archetypal blazar 3C 279 at an extreme 20 microarcsecond resolution 2020
• The flux distribution of Sgr A* 2020
• Turbulent viscosity and magnetic Prandtl number from simulations of isotropically forced turbulence 2020
• Inflection point in the power spectrum of stellar brightness variations I. The model 2020
• Detection of the Schwarzschild precession in the orbit of the star S2 near the Galactic centre massive black hole 2020
• Modeling the orbital motion of Sgr A*’s near-infrared flares 2020
• The resolved size and structure of hot dust in the immediate vicinity of AGN 2020
• An image of the dust sublimation region in the nucleus of NGC 1068 2020
• Peering into the formation history of β Pictoris b with VLTI/GRAVITY long-baseline interferometry 2020
• The GRAVITY Young Stellar Object survey 2019
• Adsorption isotherms and nucleation of methane and ethane on an analog of Titan's photochemical aerosols 2019
• Using the infrared iron lines to probe solar subsurface convection 2019
• HST spectra reveal accretion in MY Lupi 2019
• New technique to measure the cavity defects of Fabry-Perot interferometers 2019
• A geometric distance measurement to the Galactic center black hole with 0.3% uncertainty 2019
• Collimated radiation in SS 433 Constraints from spatially resolved optical jets and Cloudy modeling of the optical bullets 2019
• First direct detection of an exoplanet by optical interferometry Astrometry and K-band spectroscopy of HR 8799 e 2019
• The CARMA-NRO Orion Survey Filamentary structure as seen in (CO)-O-18 emission 2019
• Super-Keplerian equatorial outflows in SS 433 Centrifugal ejection of the circumbinary disk 2019
• Swift UVOT near-UV transit observations of WASP-121 b 2019
• Is there a left-handed magnetic field in the solar neighborhood? Exploring helical magnetic fields in the interstellar medium through dust polarization power spectra 2019
• Magnetic bipoles in rotating turbulence with coronal envelope 2019
• Multiple star systems in the Orion nebula 2018
• Detection of orbital motions near the last stable circular orbit of the massive black hole SgrA* 2018
• Radial velocity follow-up of GJ1132 with HARPS A precise mass for planet b and the discovery of a second planet 2018
• GRAVITY chromatic imaging of η Car’s core 2018
• Interplanetary dust delivery of water to the atmospheres of Pluto and Triton 2018
• Spectropolarimetric NLTE inversion code SNAPI 2018
• Reconstructing solar magnetic fields from historical observations III. Activity in one hemisphere is sufficient to cause polar field reversals in both hemispheres 2018
• Transition from axi- to nonaxisymmetric dynamo modes in spherical convection models of solar-like stars 2018
• Detection of the gravitational redshift in the orbit of the star S2 near the Galactic centre massive black hole 2018
• Large-scale dynamos in rapidly rotating plane layer convection 2018
• Spontaneous flux concentrations from the negative effective magnetic pressure instability beneath a radiative stellar surface 2018
• The close circumstellar environment of Betelgeuse V. Rotation velocity and molecular envelope properties from ALMA 2018
• Turbulent transport coefficients in spherical wedge dynamo simulations of solar-like stars 2018
• The wind and the magnetospheric accretion onto the T Tauri star S Coronae Australis at sub-au resolution 2017
• The Close AGN Reference Survey (CARS) Mrk 1018 halts dimming and experiences strong short-term variability 2017
• ALMA reveals starburst-like interstellar medium conditions in a compact star-forming galaxy at z similar to 2 using [CI] and CO 2017
• Accretion-ejection morphology of the microquasar SS 433 resolved at sub-au scale 2017
• First light for GRAVITY: Phase referencing optical interferometry for the Very Large Telescope Interferometer 2017
• An abundance analysis from the STIS-HST UV spectrum of the non-magnetic Bp star HR 6000 2017
• Line response functions in nonlocal thermodynamic equilibrium Isotropic case 2017
• Medium-resolution echelle spectroscopy of the Red Square Nebula, MWC 922 2017
• Polarimetry of transiting planets: Differences between plane-parallel and spherical host star atmosphere models 2017
• The effect of ISM absorption on stellar activity measurements and its relevance for exoplanet studies 2017
• Convection-driven spherical shell dynamos at varying Prandtl numbers 2017
• Analytic solution of an oscillatory migratory alpha(2) stellar dynamo 2017
• Inference of magnetic fields in inhomogeneous prominences 2017
• Influence of a coronal envelope as a free boundary to global convective dynamo simulations 2016
• Toward gas exhaustion in the W51 high-mass protoclusters 2016
• Robustness of oscillatory alpha(2) dynamos in spherical wedges 2016
• The Close AGN Reference Survey (CARS) What is causing Mrk 1018's return to the shadows after 30 years? 2016
• Obliquity dependence of the tangential YORP 2016
• Hi-GAL, the Herschel infrared Galactic Plane Survey: photometric maps and compact source catalogues First data release for the inner Milky Way:+68 degrees >= l >=-70 degrees 2016
• Bipolar region formation in stratified two-layer turbulence 2016
• Multiple dynamo modes as a mechanism for long-term solar activity variations 2016
• Large-scale latitude distortions of the inner Milky Way disk from the Herschel/Hi-GAL Survey 2016
• Magnetic flux concentrations from turbulent stratified convection 2016
• Anomalous temporal behaviour of broadband Ly alpha observations during solar flares from SDO/EVE 2016
• Hydraulic effects in a radiative atmosphere with ionization 2016
• Center-to-limb variation of intensity and polarization in continuum spectra of FGK stars for spherical atmospheres 2016
• Dense gas in the Galactic central molecular zone is warm and heated by turbulence 2016
• X-ray to NIR emission from AA Tauri during the dim state 2015
• Negatively charged nano-grains at 67P/Churyumov-Gerasimenko 2015
• The Orion fingers: Near-IR adaptive optics imaging of an explosive protostellar outflow 2015
• Magnetically controlled stellar differential rotation near the transition from solar to anti-solar profiles 2015
• The dense gas mass fraction in the W51 cloud and its protoclusters 2015
• Near-polytropic stellar simulations with a radiative surface 2014
• Scattering line polarization in rotating, optically thick disks 2014
• Confirmation of bistable stellar differential rotation profiles 2014
• X-ray emission from an FU Orionis star in early outburst: HBC 722 2014
• Magnetic flux concentrations from dynamo-generated fields 2014
• Quantifying the effect of turbulent magnetic diffusion on the growth rate of the magneto-rotational instability 2014
• An ALMA Early Science survey of molecular absorption lines toward PKS 1830-211 Analysis of the absorption profiles 2014
• Detection of chloronium and measurement of the Cl-35/Cl-37 isotopic ratio at z=0.89 toward PKS 1830-211 2014
• Hαspectroscopy and multiwavelength imaging of a solar flare caused by filament eruption 2014
• Magnetic flux concentrations in a polytropic atmosphere 2014
• Mean-field and direct numerical simulations of magnetic flux concentrations from vertical field 2014
• Boundary conditions for polarized radiative transfer with incident radiation 2013
• Probing the jet base of the blazar PKS1830-211 from the chromatic variability of its lensed images Serendipitous ALMA observations of a strong gamma-ray flare 2013
• X-ray detection of GJ 581 and simultaneous UV observations 2013
• Competition of rotation and stratification in flux concentrations 2013
• Herschel observations of the Sagittarius B2 cores: Hydrides, warm CO, and cold dust 2013
• Surface flux concentrations in a spherical alpha 2 dynamo 2013
• Spectral diagnostics with the SDO EVE flare lines 2013
• Transfer of polarized line radiation in 2D cylindrical geometry 2013
• The filtering of interstellar dust in the solar system 2013
• Rotational effects on the negative magnetic pressure instability 2012
• Hanle diagnostics of weak solar magnetic fields: Inversion of scattering polarization in C-2 and MgH molecular lines 2012
• Mean-field transport in stratified and/or rotating turbulence (vol 539, pg A35, 2012) 2012
• What can be learned from the seismology of a coronal loop using only a handful of frequencies? 2012
• On the origin of [Ne II] emission in young stars: mid-infrared and optical observations with the Very Large Telescope 2012
• The solar hydrogen Lyman alpha to Lyman beta line ratio 2012
• A 3D view of the outflow in the Orion Molecular Cloud 1 (OMC-1) 2012
• Mean-field transport in stratified and/or rotating turbulence 2012
• Modeling scattering polarization in molecular solar lines in spherical geometry 2012
• The flow of interstellar dust into the solar system 2012
• Millimeter to X-ray flares from Sagittarius A 2012
• Characterizing precursors to stellar clusters with Herschel 2011
• The fratricide of alpha Omega dynamos by their alpha(2) siblings 2011
• Alpha effect due to buoyancy instability of a magnetic layer 2011
• Dynamo-driven plasmoid ejections above a spherical surface 2011
• Reynolds stress and heat flux in spherical shell convection 2011
• Monitoring the solar UV irradiance spectrum from the observation of a few passbands 2011
• Searching for gas emission lines in Spitzer Infrared Spectrograph (IRS) spectra of young stars in Taurus 2011
• Star formation in the "Gulf of Mexico" 2011
• Vorticity production through rotation, shear, and baroclinicity 2011
• Alleviating alpha quenching by solar wind and meridional flows 2011
• Giving physical significance to the Hi-GAL data: determining the distance of cold dusty cores in the Milky Way 2011
• Sensitivity of p-mode absorption on magnetic region properties and kernel functions 2011
• Magnetic helicity fluxes in interface and flux transport dynamos 2011
• Radiative emission of solar features in the Ca II K line: comparison of measurements and models 2010
• Surface appearance of dynamo-generated large-scale fields 2010
• Gas morphology and energetics at the surface of PDRs: New insights with Herschel observations of NGC 7023 2010
• Herschel observations in the ultracompact HII region Mon R2 2010
• The origin of the [CII] emission in the S140 photon-dominated regions. New insights from HFI 2010
• Non-parametric modeling of the intra-cluster gas using APEX-SZ bolometer imaging data 2010
• Test-field method for mean-field coefficients with MHD background 2010
• A Herschel study of YSO evolutionary stages and formation timelines in two fields of the Hi-GAL survey 2010
• Clouds, filaments, and protostars: The Herschel Hi-GAL Milky Way 2010
• Detection of interstellar oxidaniumyl: Abundant H2O+ towards the star-forming regions DR21, Sgr B2, and NGC6334 2010
• HIFI observations of warm gas in DR21: Shock versus radiative heating 2010
• Herschel observations of the W43 "mini-starburst" 2010
• Mapping the column density and dust temperature structure of IRDCs with Herschel 2010
• Open and closed boundaries in large-scale convective dynamos 2010
• The EUV spectrum of the Sun: long-term variations in the SOHO CDS NIS spectral responsivities 2010
• Imaging performance of multi-etalon bidimensional spectrometers 2010
• The solar photospheric abundance of carbon Analysis of atomic carbon lines with the CO5BOLD solar model 2010
• A multi-wavelength study of the young star V1118 Orionis in outburst 2010
• Exploring the P-cyc vs. P-rot relation with flux transport dynamo models of solar-like stars 2010
• Multi-frequency imaging of the galaxy cluster Abell 2163 using the Sunyaev-Zel'dovich effect 2009
• Spin-orbit misalignment in the HD80606 planetary system 2009
• The solar chromosphere at high resolution with IBIS IV. Dual-line evidence of heating in chromospheric network 2009
• Alpha effect and turbulent diffusion from convection 2009
• The solar chromosphere at high resolution with IBIS III. Comparison of Ca II K and Ca II 854.2 nm imaging 2009
• Alpha effect and diffusivity in helical turbulence with shear 2009
• Photometric properties of resolved and unresolved magnetic elements 2009
• The solar chromosphere at high resolution with IBIS II. Acoustic shocks in the quiet internetwork and the role of magnetic fields 2009
• Cluster Abell 520: a perspective based on member galaxies A cluster forming at the crossing of three filaments? 2008
• Large-scale dynamos in turbulent convection with shear 2008
• Radiation transport of heliospheric Lyman-alpha from combined Cassini and Voyager data sets 2008
• Lambda effect from forced turbulence simulations 2008
• Speckle interferometry with adaptive optics corrected solar data 2008
• The photospheric solar oxygen project - I. Abundance analysis of atomic lines and influence of atmospheric models 2008
• MgI emission lines at 12 and 18 mu m in K giants 2008
• Spectral irradiance variations: comparison between observations and the SATIRE model on solar rotation time scales 2008
• A solar mean field dynamo benchmark 2008
• Scale dependence of alpha effect and turbulent diffusivity 2008
• Characterization of Fabry-Perot interferometers and multi-etalon transmission profiles 2008
• Chromospheric heating by the Farley-Buneman instability 2008
• The solar chromosphere at high resolution with IBIS - I. New insights from the Ca II 854.2 nm line 2008
• Discovery of a bipolar X-ray jet from the T Tauri star DG Tauri 2008
• Herbig-haro jets in 3D: the HL/XZ tauri region 2007
• The XMM-Newton extended survey of the Taurus molecular cloud (XEST) 2007
• The first high-resolution x-ray spectrum of a Herbig star: AB Aurigae 2007
• X-rays from T Tauri: a test case for accreting T Tauri stars 2007
• X-rays from jet-driving protostars and T Tauri stars 2007
• On the reliability of the fractal dimension measure of solar magnetic features and on its variation with solar activity 2007
• Solar atmospheric oscillations and the chromospheric magnetic topology 2007
• The nature of turbulence in OMC1 at the scale of star formation: observations and simulations 2006
• Nonaxisymmetric stability in the shearing sheet approximation 2006
• Galactic dynamo and helicity losses through fountain flow 2006
• Radiative transfer in decomposed domains 2006
• X-rays from HH 210 in the Orion nebula 2006
• Minimal tau approximation and simulations of the alpha effect 2005
• Spectrum and amplitudes of internal gravity waves excited by penetrative convection in solar-type stars 2005
• Catastrophic alpha quenching alleviated by helicity flux and shear 2004
• Identification of gravity waves in hydrodynamical simulations 2004
• Wind clumping and the wind-wind collision zone in the Wolf-Rayet binary gamma(2) Velorum - XMM-Newton observations at high and low state 2004
• Outflows and accretion in a star-disc system with stellar magnetosphere and disc dynamo 2004
• Simulations of dust-trapping vortices in protoplanetary discs 2004
• Flares from small to large: X-ray spectroscopy of Proxima Centauri with XMM-Newton 2004
• Parsec-scale Herbig-Haro outflows from intermediate mass stars 2004
• Turbulent magnetic Prandtl number and magnetic diffusivity quenching from simulations 2003
• Relaxation of writhe and twist of a bi-helical magnetic field 2003
• Structured outflow from a dynamo active accretion disc 2003
• The peculiar nebula Simeis 57 - I. Ionized gas and dust extinction 2003
• Magnetoconvection and dynamo coefficients - II. Field-direction dependent pumping of magnetic field 2002
• A comment on "Regular structures of the solar photosphere" 2002
• High-resolution X-ray imaging of the colliding wind shock in WR 147 2002
• Transformation of spherical harmonic coefficients to ellipsoidal harmonic coefficients 2002
• Astrophysical significance of the anisotropic kinetic alpha effect 2001
• Search for non-helical disc dynamos in simulations 2001
• Magnetoconvection and dynamo coefficients: Dependence of the alpha effect on rotation and magnetic field 2001
• What can HST-GHRS FeII observations of alpha Orionis (M2 lab) tell us about short-period heating? 2001
• Evolution of highly buoyant thermals in a stratified layer 2001
• The effects of vertical outflows on disk dynamos 2001
• Large scale dynamos with helicity loss through boundaries 2001
• Large scale dynamos with ambipolar diffusion nonlinearity 2000
• Temporal evolution of X-ray lags in Cygnus X-1 2000
• Temporary orbital capture of ejecta from comets and asteroids: Application to the Deep Impact experiment 2000
• Multiplicity of the HH 111 jet source: Hubble Space Telescope NICMOS images and VLA maps 1999
• The solar ultraviolet spectrum from 1200 angstrom to 1560 angstrom: a radiometric comparison between SUMER/SOHO and SOLSTICE/UARS 1999
• Evolution of a superbubble in a turbulent, multi-phased and magnetized ISM 1999
• Comment on "The sunspot as a self-excited dynamo" 1999
• Magnetic-drift processes in differentially rotating turbulence 1999
• The influence of geometry and topology on axisymmetric mean-field dynamos 1999
• Simulations of an alpha-effect due to magnetic buoyancy 1998
• Magnetic fields in young galaxies due to the cross-helicity effect 1998
• Turbulence effects in planetesimal formation 1998
• Axisymmetric mean field dynamos with dynamic and algebraic alpha-quenchings 1998
• Dynamos with different formulations of a dynamic alpha-effect 1997
• A SOLAR DYNAMO IN THE OVERSHOOT LAYER - CYCLE PERIOD AND BUTTERFLY DIAGRAM 1995
• MULTIPLE FAR-SUPERCRITICAL SOLUTIONS FOR AN ALPHA-LAMBDA-DYNAMO 1995
• STRUCTURAL STABILITY OF AXISYMMETRICAL DYNAMO MODELS 1995
• NONAXISYMMETRIC DYNAMO SOLUTIONS AND EXTENDED STARSPOTS ON LATE-TYPE STARS 1995
• THE MANY INCARNATIONS OF ACCRETION DISK DYNAMOS - MIXED PARITIES AND CHAOS FOR LARGE DYNAMO NUMBERS 1994
• ON IOES EXCITATION AND THE ORIGIN OF JUPITER DECAMETRIC RADIATION 1994
• REYNOLDS STRESSES AND DIFFERENTIAL ROTATION IN BOUSSINESQ CONVECTION IN A ROTATING SPHERICAL-SHELL 1994
• DOES SOLAR DIFFERENTIAL ROTATION ARISE FROM A LARGE-SCALE INSTABILITY 1994
• TURBULENT ACCRETION DISK DYNAMOS 1994
• THE JOVIAN LEFT HAND POLARIZED RADIATION 1993
• VERTICAL MAGNETIC-FIELDS ABOVE THE DISKS OF SPIRAL GALAXIES 1993
• A MULTITRANSITION STUDY OF CARBON-MONOXIDE IN THE ORION A MOLECULAR CLOUD .2. (CO)-O-18 1993
• ROTATIONAL EFFECTS ON CONVECTION SIMULATED AT DIFFERENT LATITUDES 1993
• STOCHASTIC EFFECTS IN MEAN-FIELD DYNAMOS 1992
• STRATIFICATION AND THERMODYNAMICS IN MEAN-FIELD DYNAMOS 1992
• DYNAMOS IN DISKS AND HALOS OF GALAXIES 1992
• THE INFLUENCE OF BOUNDARY-CONDITIONS ON THE EXCITATION OF DISK DYNAMO MODES 1992
• PERIODICALLY SPACED FRAGMENTATION IN ORION-A 1991
• PROPERTIES OF MEAN FIELD DYNAMOS WITH NON-AXISYMMETRICAL ALPHA-EFFECT 1991
• NONLINEAR NONAXISYMMETRIC DYNAMO MODELS FOR COOL STARS 1991
• BUOYANCY-LIMITED THIN SHELL DYNAMOS 1990
• GENERATION AND INTERPRETATION OF GALACTIC MAGNETIC-FIELDS 1990
• BEHAVIOR OF HIGHLY SUPERCRITICAL ALPHA-EFFECT DYNAMOS 1990
• NONLINEAR MEAN-FIELD DYNAMO MODELS - STABILITY AND EVOLUTION OF 3-DIMENSIONAL MAGNETIC-FIELD CONFIGURATIONS 1990
• A MULTITRANSITION STUDY OF CARBON-MONOXIDE IN THE ORION-A MOLECULAR CLOUD 1990
• 3-D SIMULATION OF TURBULENT CYCLONIC MAGNETOCONVECTION 1990
• CAN STELLAR DYNAMOS BE MODELED IN LESS THAN 3 DIMENSIONS 1990
• NONLINEAR DYNAMOS WITH MAGNETIC BUOYANCY IN SPHERICAL GEOMETRY 1990
• IUE OBSERVATIONS OF THE M-DWARFS CM-DRACONIS AND ROSSITER-137B - MAGNETIC ACTIVITY AT SATURATED LEVELS 1989
• THE STABILITY OF NONLINEAR DYNAMOS AND THE LIMITED ROLE OF KINEMATIC GROWTH-RATES 1989
• HYDRODYNAMIC GREEN-FUNCTIONS FOR ATMOSPHERIC OSCILLATIONS 1988
• FAR-ULTRAVIOLET AND X-RAY-EMISSION OF THE LONG PERIOD RS-CVN STAR SIGMA-GEMINORUM 1988
• ULTRAVIOLET EMISSION-LINES AND OPTICAL PHOTOMETRY OF THE FLARE STAR AT MICROSCOPII 1988
• THE JET AND ENERGY-SOURCE OF HH-34 1986
• H2O AND OH MASER EMISSION FROM BRIGHT IRAS GALAXIES 1986
• DETECTION OF EXTRAGALACTIC CS 1985
• PENETRATIVE CELLULAR CONVECTION IN A STRATIFIED ATMOSPHERE 1984
• COMPARISON OF OBSERVED SOLAR WHOLE-DISK OSCILLATION FREQUENCIES WITH THE PREDICTIONS OF A SEQUENCE OF SOLAR MODELS 1981
• HR976 AND 4C34.13 - AN X-RAY ODD COUPLE 1980
• ACCRETION OF GAMMA-GREATER-THAN 5-3 GAS BY A SCHWARZSCHILD BLACK-HOLE 1978
• UPPER LIMITS ON EXTREME ULTRAVIOLET-RADIATION FROM NEARBY MAIN-SEQUENCE AND SUBGIANT STARS 1978