Photo: Geir Antonsen
Björn Johan Gustavsson
Devin Ray,
Björn Johan,
Juha-Pekka,
Andreas,
Matthew David,
john
et al.:
Simulation of interferometric imaging with EISCAT_3D for fine-scale in-beam incoherent scatter spectra measurements
Annales Geophysicae 2025 DOI
Andreas,
Andres,
Matthew,
Devin Ray,
Theresa,
Björn Johan
et al.:
Conditions for the Kelvin-Helmholtz Instability in the Polar Ionosphere
Geophysical Research Letters 2025 DOI
Magnus Fagernes,
Devin Ray,
Megan D.,
Jean-Pierre,
David R.,
Meers
et al.:
Turbulence Around Auroral Arcs
Andreas,
Juha-Pekka,
Devin Ray,
Theresa,
Andres,
Björn Johan
et al.:
NOIRE-Net–a convolutional neural network for automatic classification and scaling of high-latitude ionograms
Ingeborg,
Andres,
Björn Johan,
Kjellmar,
Magnar Gullikstad
:
On the Identification of the Dayside Auroral Region Using Incoherent Scatter Radar
Yoshimasa,
Yasunobu,
Akira,
Takehiko,
Björn Johan,
Urban
et al.:
Application of generalized aurora computed tomography to the EISCAT-3D project
Thomas B.,
Tima,
Urban,
Björn Johan,
Michael T.
:
On mechanisms for high-frequency pump-enhanced optical emissions at 557.7 and 630.0gnm from atomic oxygen in the high-latitude F-region ionosphere
Johann Immanuel,
Juha,
Bjorn Johan,
Andres
:
A technique for volumetric incoherent scatter radar analysis
Shun-Rong,
Yukitoshi,
Juha-Pekka,
Larry R.,
Delores J.,
Björn Johan
et al.:
Simultaneous Global Ionospheric Disturbances Associated With Penetration Electric Fields During Intense and Minor Solar and Geomagnetic Disturbances
Brett Cameron,
Terence,
Björn Johan,
Emil,
Christiano,
Christopher
et al.:
Science goals for a high-frequency radar and radio imaging array
Daniel K.,
Noora,
Bjorn Johan,
Kirsti
:
The altitude of green OI 557.7 nm and blue N2+ 427.8 nm aurora
Björn Johan
:
Time-Dependent Electron Transport I: Modelling of Supra-Thermal Electron Bursts Modulated at 5–10 Hz With Implications for Flickering Aurora
Mizuki,
Takeshi,
Yoshimasa,
Yasunobu,
Keisuke,
Björn Johan
et al.:
Reconstruction of precipitating electrons and three-dimensional structure of a pulsating auroral patch from monochromatic auroral images obtained from multiple observation points
Juha,
Torsten,
Jorge L.,
Maria,
Bjorn Johan,
Daniel
et al.:
Multi-instrument observations of the Pajala fireball: Origin, characteristics, and atmospheric implications
Derek,
Tom,
Bjorn Johan
:
Manx Arrays: Perfect Non-Redundant Interferometric Geometries
A.E.,
M.J.,
Daniel Keith,
Björn Johan,
Odd Torsten Krøner
:
A new auroral phenomenon, the anti-black aurora
Torbjørn,
Juha,
Björn Johan,
Viswanathan Lakshmi
:
Planetary radar science case for EISCAT 3D
Johann,
Juha,
Miguel,
Björn,
Jorge L.
:
Radar imaging with EISCAT 3D
Elena,
Björn Johan,
Juha,
Torbjørn
:
Lightboard – a new teaching tool at the Faculty of Science and Technology at UiT
Læring om læring 2021 ARKIV
Theresa,
Thomas,
Björn Johan,
Michael T.
:
Conditions for Topside Ion Line Enhancements
Johann,
Juha,
Björn
:
Observing electric field and neutral wind with EISCAT 3D
Yasunobu,
Y.,
Akira,
K.,
Y.,
T.
et al.:
Development of low-cost multi-wavelength imager system for studies of aurora and airglow
Polar Science 2020 DOI
Sam,
Betty,
Björn Johan,
Daniel Keith,
Nickolay,
R. C.
et al.:
Horizontal electric fields from flow of auroral O+(2P) ions at sub-second temporal resolution
Thomas B,
Björn Johan,
Theresa,
Michael T
:
Electron heating by HF pumping of high-latitude ionospheric
F-region plasma near magnetic zenith
Derek,
Tuula,
Björn Johan,
Andreas,
Noora
:
Lumikot: Fast auroral transients during the growth phase of substorms
Ingeborg,
Andres,
Kjellmar,
Björn Johan
:
Identification and characterization of the dayside ionospheric low energy precipitation region based on ISR measurements
2024
Ingeborg,
Andres,
Kjellmar,
Björn Johan
:
On the Dynamics and IMF Effects in the Dayside Ionospheric Region Based on ISR Measurements
2024
Andreas,
Andres,
Matthew David,
Devin Ray,
Theresa,
Björn Johan
et al.:
Formation and evolution of the Kelvin-Helmholtz Instability in the Arctic Ionosphere
2024
Andreas,
Andres,
Matthew David,
Devin Ray,
Theresa,
Björn Johan
et al.:
Conditions for the Kelvin-Helmholtz Instability in the Polar Ionosphere
2024
Andreas,
Juha-Pekka,
Devin Ray,
Theresa,
Andres,
Björn Johan
et al.:
NOIRE-Net - A convolutional neural network for automatic classification and scaling of high-latitude ionograms
2024
Etienne,
Andres,
Björn Johan,
James H.,
Robert F.,
Douglas E.
:
Time-dependent electron transport calculations of small-scale dynamic precipitation
2024
Ingeborg,
Björn Johan
:
Experimental observations and modelling of ionospheric electron heating during frequency sweeps through the third double resonance
2024
Etienne,
Andres,
Björn Johan,
James H.,
Robert F.,
Douglas E.
:
Combining Time-Dependent Electron Transport Calculations with Rocket Measurements to Study Small-Scale Dynamic Precipitation
2024
Devin Ray,
Björn Johan,
Juha-Pekka,
Andreas,
Matthew D.,
john
et al.:
Interferometric Imaging of the Ion-Line with EISCAT_3D - Development and Software
2024
Devin Ray,
Björn Johan,
Juha-Pekka,
Andreas,
Matthew D.,
john
et al.:
Interferometric Imaging for Fine-Scale Ionospheric Plasma Parameter Determination with EISCAT_3D
2024
Devin Ray,
Björn Johan,
Juha-Pekka,
Andreas,
Matthew D.,
john
et al.:
Interferometric Imaging of the Ion-Line with EISCAT_3D
2024
Devin Ray,
Björn Johan,
Juha-Pekka,
Andreas,
Matthew D.,
john
et al.:
Interferometric Imaging of Ion Lines with EISCAT 3D - Resolving In-Beam Structures Using Long Baselines, Singular Value Decomposition, and Tikhonov Regularization
2024
Devin Ray,
Björn Johan,
Juha-Pekka,
Andreas,
Matthew D.,
john
et al.:
Interferometric Imaging of the Ion-Line with EISCAT_3D
2024
Andres,
Juha-Pekka,
Theresa,
Ingemar,
Devin Ray,
Björn Johan
et al.:
On the characteristics of meso-scale ionospheric dynamics based on EISCAT radar low-elevation experiments
2024
Devin Ray,
Björn Johan,
Juha-Pekka,
Andres,
Andreas,
Matthew D.
:
EISCAT_3D Imaging Techniques for Ionospheric Incoherent Scatter Spectra Reconstruction
2023
Andreas,
Andres,
Matthew D.,
Devin Ray,
Theresa,
Björn Johan
et al.:
Conditions for the Kelvin-Helmholtz Instability in the Polar Ionosphere
2023
Etienne,
Andres,
Björn Johan,
James H.,
Robert F.,
Douglas E.
:
Time dependent electron transport calculations of the ionospheric response to Alfvénic precipitations
2023
Johann,
Juha,
Björn Johan
:
Advanced signal processing techniques with EISCAT3D
UiT Norges arktiske universitet 24. Mai 2022
Johann,
Juha,
Miguel,
Björn,
Jorge Luis
:
Radar imaging with EISCAT 3D
2021
Johann,
Juha,
Björn
:
Nøytralvind og elektrisk felt over EISCAT 3D
2021
Johann,
Juha,
Miguel,
Björn,
Jorge Luis
:
Radar imaging with EISCAT3D
2021
Johann,
Juha,
Björn
:
Neutral winds and electric fields with EISCAT 3D
2021
Johann,
Miguel,
Juha,
Jorge L.,
Björn
:
Aperture synthesis radar imaging with EISCAT 3D
2021
Andreas,
Björn Johan
:
Anisotropic Electron Fluxes - An Explanation of the Flat Altitude Distributions of Radio Induced Optical Emissions?
2019
Johann Immanuel,
Juha,
Miguel,
Björn Johan,
Jorge L.
:
Investigation of spatial and temporal resolution of Eiscat 3D
2019
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Research interests
Optical auroral research: Faster, higher, fainter!
Radio induced optical emissions: We can make our own aurora!
Main research area: Combined optical and incoherent scatter radar
(ISR) observations of aurora and HF-radio wave enhanced optical
emissions. The work on aurora ranges from observations and analysis of
intensified high-speed (25-50 frames per second) white light video
recording with the Odin imager (http://www.phys.uit.no/~maarten/of
"flickering aurora" (where the intensity varies at frequencies up to
15 Hz) and "black aurora" (narrow structures with reduced luminosity
in diffuse aurora), to tomography-like estimates of the
three-dimensional distribution of auroral volume emission rates using
image data from the Auroral Large Imaging System
(http://www.alis.irf.se/) and other multi-station optical
observations. When such observations are combined with ionospheric
parameters from ISR observations it is possible to discriminate
between proposed theoretical explanations. In particular this is
possible with HF-Heating experiment where the ionosphere is modified
with a high-frequency (~4-8 MHz) radio-wave beam that heats the
ionospheric electrons (from 1000 to 3500 K), creates small-scale
(~10 m) density depletions, drive wave-wave processes that causes the
ionosphere to emit radio waves, and accelerates electrons to high
energies enough to excite thermospheric atoms that emit visible
light. The possibility to control the HF-pump wave (its frequency,
light. The possibility to control the HF-pump wave (its frequency,
power, polarization, direction, pump-cycle duration, etc) makes it
possible to test theories for wave-plasma interaction.
