Bernd Freytag
Forskare vid Institutionen för fysik och astronomi; Astronomi och rymdfysik
- Telefon:
- 018-471 59 92
- E-post:
- Bernd.Freytag@physics.uu.se
- Besöksadress:
- Ångströmlaboratoriet, Regementsvägen 10
- Postadress:
- Box 516
751 37 UPPSALA
Publikationer
Senaste publikationer
Ingår i Astronomy and Astrophysics, 2024
- DOI för Dimming events of evolved stars due to clouds of molecular gas: Scenarios based on 3D radiation-hydrodynamics simulations with CO5BOLD
- Ladda ner fulltext (pdf) av Dimming events of evolved stars due to clouds of molecular gas: Scenarios based on 3D radiation-hydrodynamics simulations with CO5BOLD
Ingår i Astronomy and Astrophysics, 2024
- DOI för Retrieving stellar parameters and dynamics of AGB stars with Gaia parallax measurements and CO5BOLD RHD simulations
- Ladda ner fulltext (pdf) av Retrieving stellar parameters and dynamics of AGB stars with Gaia parallax measurements and CO5BOLD RHD simulations
Ingår i Astronomy and Astrophysics, 2024
- DOI för Asymmetries in asymptotic giant branch stars and their winds: I. From 3D RHD models to synthetic observables
- Ladda ner fulltext 1 (pdf) av Asymmetries in asymptotic giant branch stars and their winds: I. From 3D RHD models to synthetic observables
- Ladda ner fulltext 2 (pdf) av Asymmetries in asymptotic giant branch stars and their winds: I. From 3D RHD models to synthetic observables
Simulating small-scale dynamo action in cool main-sequence stars
Ingår i Astronomy and Astrophysics, 2024
- DOI för Simulating small-scale dynamo action in cool main-sequence stars
- Ladda ner fulltext (pdf) av Simulating small-scale dynamo action in cool main-sequence stars
A new dimension in the variability of AGB stars: Convection patterns size changes with pulsation
Ingår i Astronomy and Astrophysics, 2024
- DOI för A new dimension in the variability of AGB stars: Convection patterns size changes with pulsation
- Ladda ner fulltext (pdf) av A new dimension in the variability of AGB stars: Convection patterns size changes with pulsation
Alla publikationer
Artiklar i tidskrift
Ingår i Astronomy and Astrophysics, 2024
- DOI för Dimming events of evolved stars due to clouds of molecular gas: Scenarios based on 3D radiation-hydrodynamics simulations with CO5BOLD
- Ladda ner fulltext (pdf) av Dimming events of evolved stars due to clouds of molecular gas: Scenarios based on 3D radiation-hydrodynamics simulations with CO5BOLD
Ingår i Astronomy and Astrophysics, 2024
- DOI för Retrieving stellar parameters and dynamics of AGB stars with Gaia parallax measurements and CO5BOLD RHD simulations
- Ladda ner fulltext (pdf) av Retrieving stellar parameters and dynamics of AGB stars with Gaia parallax measurements and CO5BOLD RHD simulations
Ingår i Astronomy and Astrophysics, 2024
- DOI för Asymmetries in asymptotic giant branch stars and their winds: I. From 3D RHD models to synthetic observables
- Ladda ner fulltext 1 (pdf) av Asymmetries in asymptotic giant branch stars and their winds: I. From 3D RHD models to synthetic observables
- Ladda ner fulltext 2 (pdf) av Asymmetries in asymptotic giant branch stars and their winds: I. From 3D RHD models to synthetic observables
Simulating small-scale dynamo action in cool main-sequence stars
Ingår i Astronomy and Astrophysics, 2024
- DOI för Simulating small-scale dynamo action in cool main-sequence stars
- Ladda ner fulltext (pdf) av Simulating small-scale dynamo action in cool main-sequence stars
A new dimension in the variability of AGB stars: Convection patterns size changes with pulsation
Ingår i Astronomy and Astrophysics, 2024
- DOI för A new dimension in the variability of AGB stars: Convection patterns size changes with pulsation
- Ladda ner fulltext (pdf) av A new dimension in the variability of AGB stars: Convection patterns size changes with pulsation
Ingår i Astrophysical Journal Letters, 2024
- DOI för Is Betelgeuse Really Rotating?: Synthetic ALMA Observations of Large-scale Convection in 3D Simulations of Red Supergiants
- Ladda ner fulltext (pdf) av Is Betelgeuse Really Rotating?: Synthetic ALMA Observations of Large-scale Convection in 3D Simulations of Red Supergiants
Properties of self-excited pulsations in 3D simulations of AGB stars and red supergiants
Ingår i Astronomy and Astrophysics, 2023
- DOI för Properties of self-excited pulsations in 3D simulations of AGB stars and red supergiants
- Ladda ner fulltext (pdf) av Properties of self-excited pulsations in 3D simulations of AGB stars and red supergiants
Effects of magnetic fields on the center-to-limb variation in solar-type stars
Ingår i Astronomy and Astrophysics, 2023
- DOI för Effects of magnetic fields on the center-to-limb variation in solar-type stars
- Ladda ner fulltext (pdf) av Effects of magnetic fields on the center-to-limb variation in solar-type stars
Global 3D radiation-hydrodynamical models of AGB stars with dust-driven winds
Ingår i Astronomy and Astrophysics, 2023
- DOI för Global 3D radiation-hydrodynamical models of AGB stars with dust-driven winds
- Ladda ner fulltext (pdf) av Global 3D radiation-hydrodynamical models of AGB stars with dust-driven winds
Ingår i Astronomy and Astrophysics, 2022
- DOI för The extended atmosphere and circumstellar environment of the cool evolved star VX Sagittarii as seen by MATISSE star
- Ladda ner fulltext (pdf) av The extended atmosphere and circumstellar environment of the cool evolved star VX Sagittarii as seen by MATISSE star
Probing red supergiant dynamics through photo-center displacements measured by Gaia
Ingår i Astronomy and Astrophysics, 2022
- DOI för Probing red supergiant dynamics through photo-center displacements measured by Gaia
- Ladda ner fulltext (pdf) av Probing red supergiant dynamics through photo-center displacements measured by Gaia
Atmosphere of Betelgeuse before and during the Great Dimming event revealed by tomography
Ingår i Astronomy and Astrophysics, 2021
- DOI för Atmosphere of Betelgeuse before and during the Great Dimming event revealed by tomography
- Ladda ner fulltext (pdf) av Atmosphere of Betelgeuse before and during the Great Dimming event revealed by tomography
Ingår i Astronomy and Astrophysics, 2021
Ingår i Astronomy and Astrophysics, 2021
Horizontal spreading of planetary debris accreted by white dwarfs
Ingår i Monthly notices of the Royal Astronomical Society, s. 1646-1667, 2021
3D spectroscopic analysis of helium-line white dwarfs
Ingår i Monthly notices of the Royal Astronomical Society, s. 5274-5293, 2021
Ingår i Astronomy and Astrophysics, 2020
Ingår i Astronomy and Astrophysics, 2020
- DOI för Optical interferometry and Gaia measurement uncertainties reveal the physics of asymptotic giant branch stars
- Ladda ner fulltext (pdf) av Optical interferometry and Gaia measurement uncertainties reveal the physics of asymptotic giant branch stars
VLTI-PIONIER imaging of the red supergiant V602 Carinae
Ingår i Astronomy and Astrophysics, 2020
Ingår i Astronomy and Astrophysics, 2019
Calibration of the mixing-length theory for structures of helium-dominated atmosphere white dwarfs
Ingår i Monthly notices of the Royal Astronomical Society, s. 1010-1025, 2019
Convective overshoot and macroscopic diffusion in pure-hydrogen-atmosphere white dwarfs
Ingår i Monthly notices of the Royal Astronomical Society, s. 2503-2522, 2019
- DOI för Convective overshoot and macroscopic diffusion in pure-hydrogen-atmosphere white dwarfs
- Ladda ner fulltext (pdf) av Convective overshoot and macroscopic diffusion in pure-hydrogen-atmosphere white dwarfs
Ingår i Astronomy and Astrophysics, 2019
Ingår i Astronomy and Astrophysics, 2018
Heading Gaia to measure atmospheric dynamics in AGB stars
Ingår i Astronomy and Astrophysics, 2018
- DOI för Heading Gaia to measure atmospheric dynamics in AGB stars
- Ladda ner fulltext (pdf) av Heading Gaia to measure atmospheric dynamics in AGB stars
Ingår i Astronomy and Astrophysics, 2018
Atmospheres and wind properties of non-spherical AGB stars
Ingår i Astronomy and Astrophysics, 2018
Pure-helium 3D model atmospheres of white dwarfs
Ingår i Monthly notices of the Royal Astronomical Society, s. 1522-1537, 2018
Simulation of the small-scale magnetism in main-sequence stellar atmospheres
Ingår i Astronomy and Astrophysics, 2018
Tomography of cool giant and supergiant star atmospheres: I. Validation of the method
Ingår i Astronomy and Astrophysics, 2018
Large granulation cells on the surface of the giant star π1 Gruis
Ingår i Nature, s. 310-+, 2018
Using CO5BOLD models to predict the effects of granulation on colours .
Ingår i MEMORIE della Società Astronomica Italiana, 2017
Convective overshoot and metal accretion onto white dwarfs.
Ingår i MEMORIE della Società Astronomica Italiana, s. 104, 2017
Boundary conditions in CO5BOLD
Ingår i MEMORIE della Società Astronomica Italiana, s. 12-21, 2017
Ingår i Astronomy and Astrophysics, 2017
Spectroscopic properties of a two-dimensional time-dependent Cepheid model
Ingår i Astronomy and Astrophysics, 2017
Ingår i Astronomy and Astrophysics, 2016
Ingår i Astrophysical Journal, 2016
Non-magnetic photospheric bright points in 3D simulations of the solar atmosphere
Ingår i Astronomy and Astrophysics, 2016
Ingår i Astronomy and Astrophysics, 2015
Calibration of the Mixing-Length Theory for Convective White Dwarf Envelopes
Ingår i Astrophysical Journal, 2015
3D Model Atmospheres for Extremely Low-Mass White Dwarfs
Ingår i Astrophysical Journal, 2015
On The Evolution Of Magnetic White Dwarfs
Ingår i Astrophysical Journal, 2015
- DOI för On The Evolution Of Magnetic White Dwarfs
- Ladda ner fulltext (pdf) av On The Evolution Of Magnetic White Dwarfs
White Dwarfs in the UKIRT Infrared Deep Sky Survey Data Release 9
Ingår i Astrophysical Journal, s. 103, 2014
Properties of small-scale magnetism of stellar atmospheres
Ingår i Nippon Tenmon Gakkai obun kenkyu hokoku, 2014
Ingår i Astronomy and Astrophysics, 2011
Radiative hydrodynamics simulations of red supergiant stars IV. Gray versus non-gray opacities
Ingår i Astronomy and Astrophysics, 2011
Ingår i Astronomy and Astrophysics, s. 1031-1046, 2008
Three-dimensional simulations of the atmosphere of an AGB star
Ingår i Astronomy and Astrophysics, s. 571-583, 2008
Hydrodynamic Simulations of He Shell Flash Convection
Ingår i Astrophysical Journal, s. 1057-1074, 2006
Carbon monoxide in the solar atmosphere. I. Numerical method and two-dimensional models
Ingår i Astronomy and Astrophysics, s. 1043-1057, 2005
Ingår i Astronomy and Astrophysics, s. 1121-1137, 2004
3-D hydrodynamic simulations of the solar chromosphere
Ingår i Astronomical Notes - Astronomische Nachrichten, s. 410-411, 2003
Multi-mode Pulsations in AGB Stars: Insights from 3D RHD CO5BOLD Simulations
Ingår i Astronomy and Astrophysics
Konferensbidrag
Spectroscopic Properties of a Two-Dimensional Cepheid Model
Ingår i RR Lyrae 2017 conference - revival of the classical pulsators, s. 222-226, 2018
Calibration of the Mixing-Length Free Parameter for White Dwarf Structures
Ingår i 19th European Workshop on White Dwarfs, s. 89-94, 2015
Ingår i WHY GALAXIES CARE ABOUT AGB STARS III, s. 23-29, 2015
Pathways For Observing Stellar Surfaces Using 3D Hydrodynamical Simulations Of Evolved Stars
Ingår i Physics Of Evolved Stars, s. 237-242, 2015
3D Hydrodynamical Simulations of Evolved Stars and Observations of Stellar Surfaces
Ingår i WHY GALAXIES CARE ABOUT AGB STARS III, s. 11-21, 2015
Ingår i WHY GALAXIES CARE ABOUT AGB STARS III, s. 91-96, 2015
3-D Hydrodynamic Simulation of Convection in A Stars
Ingår i IAUS 239, Convection in Astrophysics, s. 68-70, 2007
Holistic MHD-Simulation from the Convection Zone to the Chromosphere
Ingår i Solar MHD Theory and Observations, 2006
Simulations of Magnetohydrodynamics and CO Formation from the Convection Zone to the Chromosphere
Ingår i Chromospheric and Coronal Magnetic Fields, s. 16-1, 2005