C. Budtz‐Jørgensen
A5029217868- Gamma-ray bursts and supernovae
- Astrophysical Phenomena and Observations
- Advanced Semiconductor Detectors and Materials
- Radiation Detection and Scintillator Technologies
- Pulsars and Gravitational Waves Research
- Astrophysics and Cosmic Phenomena
- Ionosphere and magnetosphere dynamics
- Lightning and Electromagnetic Phenomena
- Astro and Planetary Science
- Particle Detector Development and Performance
- Astronomy and Astrophysical Research
- Advanced X-ray and CT Imaging
- Earthquake Detection and Analysis
- Solar and Space Plasma Dynamics
- CCD and CMOS Imaging Sensors
- Nuclear Physics and Applications
- Planetary Science and Exploration
- Astronomical Observations and Instrumentation
- Stellar, planetary, and galactic studies
- Adaptive optics and wavefront sensing
- Medical Imaging Techniques and Applications
- Calibration and Measurement Techniques
- Infrared Target Detection Methodologies
- Atmospheric aerosols and clouds
- Semiconductor Quantum Structures and Devices
Technical University of Denmark
2014-2024
DTU Space
2011-2018
Czech Technical University in Prague
2018
Kazan Federal University
2018
Swiss Institute of Comparative Law
2014
Danish Meteorological Institute
2001-2002
The JEM–X monitor provides X-ray spectra and imaging with arcminute angular resolution in the 3 to 35 keV band. good low energy response of plays an important role identification gamma ray sources analysis scientific interpretation combined data. is a coded aperture instrument consisting two identical, coaligned telescopes. Each detectors has sensitive area 500 cm2, views sky through its own mask. masks are inverted respect each other 3' across effective field view about 10° diameter.
Terrestrial gamma-ray flashes (TGFs) are transient emissions from thunderstorms, generated by electrons accelerated to relativistic energies in electric fields. Elves ultraviolet and optical excited the lower ionosphere electromagnetic waves radiated lightning current pulses. We observed a TGF an associated elve using Atmosphere-Space Interactions Monitor on International Space Station. The occurred at onset of pulse that elve, early stage flash. Our measurements suggest is fast has high...
Abstract The Atmosphere‐Space Interactions Monitor (ASIM) was launched to the International Space Station on 2 April 2018. ASIM payload consists of two main instruments, Modular X‐ray and Gamma‐ray Sensor (MXGS) for imaging spectral analysis Terrestrial Flashes (TGFs) Multi‐spectral Imaging Array detection, imaging, Transient Luminous Events lightning. is first space mission designed simultaneous observations Events, TGFs, optical During 10 months operation (2 June 2018 1 2019) MXGS has...
The focus of this paper is to evaluate thick, 20×20×10 and 10×10×10mm3, cadmium zinc telluride (CZT), Cd0.9Zn0.1Te, crystals grown using the traveling heater method (THM). phenomenal spectral performance small size low concentration Te inclusions/precipitates these indicate that THM suitable for mass production CZT radiation detectors can be used in a variety applications. Our result also proves with careful material selection IR high-quality fabrication processes, theoretical energy...
The Large Observatory For x-ray Timing (LOFT) was studied within ESA M3 Cosmic Vision framework and participated in the final down-selection for a launch slot 2022-2024. Thanks to unprecedented combination of effective area spectral resolution its main instrument, LOFT will study behaviour matter under extreme conditions, such as strong gravitational field innermost regions accretion flows close black holes neutron stars, supra-nuclear densities interior stars. science payload is based on...
The LOFT mission concept is one of four candidates selected by ESA for the M3 launch opportunity as Medium Size missions Cosmic Vision programme. window currently planned between 2022 and 2024. designed to exploit diagnostics rapid X-ray flux spectral variability that directly probe motion matter down distances very close black holes neutron stars, well physical state ultradense matter. These primary science goals will be addressed a payload composed Large Area Detector (LAD) Wide Field...
Abstract Nuclear astrophysics, and particularly nuclear emission line diagnostics from a variety of cosmic sites, has remained one the least developed fields in experimental astronomy, despite its central role addressing number outstanding questions modern astrophysics. Radioactive isotopes are co-produced with stable fusion reactions nucleosynthesis supernova explosions other violent events, such as neutron star mergers. The origin 511 keV positron annihilation observed direction Galactic...
Abstract This feasibility study explores the possibility of using 3D CZT drift strip detectors developed by DTU Space in a small Compton camera payload, with primary objective technology demonstration. We have defined scalable mass model for comprising eight surrounded CsI scintillator active shielding. The payload's angular resolution, effective area, and efficiency are evaluated through simulations far-field monochromatic point sources. instrument's sensitivity is assessed low Earth orbit...
We report on design, manufacture, and testing of a Slewing Mirror Telescope (SMT), the first its kind part Ultra-Fast Flash Observatory-pathfinder (UFFO-p) for space-based prompt measurement early UV/optical light curves from Gamma-Ray Bursts (GRBs).Using fast slewing mirror 150 mm diameter mounted 2 axis gimbal stage, SMT can deliver images GRB optical counterparts to intensified CCD detector within 1.5~1.8s over ± 35 degrees in field view.Its Ritchey-Chrétien telescope 100 provides 17 ×...
The Modular X- and Gamma-ray Sensor (MXGS) is an imaging spectral instrument mounted on the starboard side of Columbus module International Space Station. Together with Multi-Spectral Imaging Assembly (MMIA) (Chanrion et al. this issue) MXGS constitutes instruments Atmosphere-Space Interactions Monitor (ASIM) (Neubert issue). main objectives are to image measure spectrum $\gamma $ -rays from lightning discharges, known as Terrestrial Flashes (TGFs), for MMIA perform high speed photometry...
One of the least documented and understood aspects gamma-ray bursts (GRBs) is rise phase optical light curve. The Ultra-Fast Flash Observatory (UFFO) an effort to address this question through extraordinary opportunities presented by a series space missions including small spacecraft observatory. UFFO equipped with fast-response Slewing Mirror Telescope (SMT) that uses rapidly moving mirror or array redirect beam rather than slewing entire aim instrument at GRB position. will probe early...
The spectral response of several crystals grown by the Traveling Heater Method (THM) were investigated. An energy resolution 0.98% for a Pseudo Frisch-Grid 4 times 9 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> and 2.1% FWHM coplanar-grid size 11 5 measured using xmlns:xlink="http://www.w3.org/1999/xlink">137</sup> Cs-662 keV. In addition 4% at 122 keV has also been on 20 X monolithic pixellated devices. material shows great...
At DTU Space, a high-resolution 3D CZT drift strip detector has been developed and number of prototype detectors were fabricated, allowing for sub-mm position resolution at high energies (>100 keV), as well energy resolution. For spectral spatial performance, the characterized with fine collimated high-energy (Cs137) monochromatic beam (0.2 mm × 40 mm) using digitizer which pulse shapes bi-polar signals from all electrodes could be analysed. Data analysis consist determination single double...
The science analysis of the data from JEM–X on INTEGRAL is performed through a number levels including corrections, good time selection, imaging and source finding, spectrum light-curve extraction. These consist individual executables running complete controlled by script where parameters for detailed settings are introduced. end products FITS files with format compatible standard packages such as XSPEC.
A technique, the so-called Drift Strip Method (DSM), for improving CdZnTe detector energy response to hard X-rays and gamma-rays was applied as a pixel geometry. First tests have confirmed that this type provides excellent resolution imaging performance. We specifically report on performance of 3 mm thick prototype CZT drift detectors fabricated using material from eV-products. discuss issues associated with module Characterization results obtained several are presented. Results position...
The 3-D position sensitive CZT detector for high-energy astrophysics developed at DTU has been investigated with a digitizer readout system. is based on the drift-strip principle and was fabricated using REDLEN crystal (20 mm × 20 5 mm). contains 12 drift cells, each comprising one collecting anode strip four strips, biased such that electrons are focused collected by strips. Three-dimensional determination achieved signals, signals from ten cathode For characterization work, we used DAQ...
The Large Observatory For x-ray Timing (LOFT) is a mission concept which was proposed to ESA as M3 and M4 candidate in the framework of Cosmic Vision 2015-2025 program. Thanks unprecedented combination effective area spectral resolution its main instrument uniquely large field view wide monitor, LOFT will be able study behaviour matter extreme conditions such strong gravitational innermost regions close black holes neutron stars supra-nuclear densities interiors stars. science payload based...