Adam Popowicz
A5039143935- Stellar, planetary, and galactic studies
- Astrophysics and Star Formation Studies
- Astro and Planetary Science
- Astronomy and Astrophysical Research
- Gamma-ray bursts and supernovae
- CCD and CMOS Imaging Sensors
- Astronomical Observations and Instrumentation
- Adaptive optics and wavefront sensing
- Infrared Target Detection Methodologies
- Astrophysical Phenomena and Observations
- Advanced Image Processing Techniques
- Spacecraft Design and Technology
- Pulsars and Gravitational Waves Research
- Adversarial Robustness in Machine Learning
- Calibration and Measurement Techniques
- Solar and Space Plasma Dynamics
- Biometric Identification and Security
- Astrophysics and Cosmic Phenomena
- Advanced Vision and Imaging
- Spectroscopy and Laser Applications
- Advanced Neural Network Applications
- Image Processing Techniques and Applications
- Optical Polarization and Ellipsometry
- Optical Systems and Laser Technology
- Advanced Image Fusion Techniques
Silesian University of Technology
2016-2025
Abstract The ExoClock project is an inclusive, integrated, and interactive platform that was developed to monitor the ephemerides of Ariel targets increase mission efficiency. makes best use all available resources, i.e., observations from ground telescopes, midtime values literature, finally, space instruments. Currently, network includes 280 participants with telescopes capable observing 85% currently known candidate targets. This work results ∼1600 obtained up 2020 December 31 network....
Abstract NASA’s Transiting Exoplanet Survey Satellite (TESS) mission promises to improve our understanding of hot Jupiters by providing an all-sky, magnitude-limited sample transiting suitable for population studies. Assembling such a requires confirming hundreds planet candidates with additional follow-up observations. Here we present 20 that were detected using TESS data and confirmed be planets through photometric, spectroscopic, imaging observations coordinated the Follow-up Observing...
BRITE (BRIght Target Explorer) Constellation, the first nanosatellite mission applied to astrophysical research, is a collaboration among Austria, Canada and Poland. The fleet of satellites (6 launched, 5 functioning) performs precise optical photometry brightest stars in night sky. A pioneering like - with optics instruments restricted small volume, mass power several nanosatellites, whose measurements must be coordinated orbit poses many unique challenges. We discuss technical issues,...
Empirical evidence for the involvement of nonradial pulsations (NRP's) in mass loss from Be stars ranges (i) a singular case (\object{$\mu$ Cen}) repetitive ejections triggered by multi-mode beating to (ii) several photometric reports about enormous numbers pulsation modes popping up during outbursts and on (iii) effective single-mode pulsators. The BRITE Constellation nanosatellites was used obtain mmag photometry $\eta$ \object{$\mu$ Cen}. In low-inclination star Cen}, light pollution...
From 5.5 months of dual-band optical photometric monitoring at the 1 mmag level, BRITE-Constellation has revealed two simultaneous types variability in O4I(n)fp star ζ Puppis: one single periodic non-sinusoidal component superimposed on a stochastic component. The monoperiodic is 1.78-d signal previously detected by Coriolis/Solar Mass Ejection Imager, but this time along with prominent first harmonic. shape changes over time, behaviour that incompatible stellar oscillations consistent...
Context. The BRIght Target Explorer (BRITE) mission is a pioneering space project aimed at the long-term photometric monitoring of brightest stars in sky by means constellation nanosatellites. Its main advantage high accuracy and time coverage which are inaccessible from ground. drawback lack cooling CCD detectors absence good shielding that would protect them energetic particles.
ι Ori is a well-studied massive binary consisting of an O9 III + B1 III/IV star. Due to its high eccentricity (e = 0.764) and short orbital period (Porb 29.133 76 d), it has been considered be good candidate show evidence tidal effects; however, none have previously identified. Using photometry from the BRIght Target Explorer (BRITE)-Constellation space mission, we confirmed existence distortions through presence heartbeat signal at periastron. We combine spectroscopic light-curve analyses...
This paper aims to precisely determine the masses and detect pulsation modes in two massive components of Beta Cen with BRITE-Constellation photometry. In addition, seismic models for are considered effects fast rotation discussed. is done test limitations modeling this very difficult case. A simultaneous fit visual spectroscopic orbits used self-consistently derive orbital parameters, subsequently masses, components. The derived equal 12.02 +/- 0.13 10.58 0.18 M_Sun. parameters wider, - B...
We report on the first multi-color precision light curve of bright Wolf-Rayet binary $\gamma^2$ Velorum, obtained over six months with nanosatellites in BRITE- Constellation fleet. In parallel, we 488 high-resolution optical spectra system. this datasets, revise spectroscopic orbit and bulk properties colliding winds. find a dependence both excess emission that scales inverse separation. When analyzing combination photometry, phase is caused only by lines, not from changing continuum. also...
Deep neural networks (DNN) have outstanding performance in various applications. Despite numerous efforts of the research community, out-of-distribution (OOD) samples remain a significant limitation DNN classifiers. The ability to identify previously unseen inputs as novel is crucial safety-critical applications such self-driving cars, unmanned aerial vehicles, and robots. Existing approaches detect OOD treat black box evaluate confidence score output predictions. Unfortunately, this method...
Deep neural networks (DNNs) have achieved outstanding results in domains such as image processing, computer vision, natural language processing and bioinformatics. In recent years, many methods been proposed that can provide a visual explanation of decision made by classifiers. Saliency maps are probably the most popular. However, it is still unclear how to properly interpret saliency for given which techniques perform accurately. This paper presents methodology practically evaluate real...
Solar flares, originating from sudden energy releases in the Sun’s atmosphere, pose significant risks to spaceborne and terrestrial technological systems, including satellite operations, communications networks, power grids. Accurate solar flare forecasting is therefore essential for mitigating these impacts advancing space weather prediction capabilities. In this study, we present a comprehensive deep-learning-based approach utilizing multi-channel observations Dynamics Observatory (SDO),...
This article introduces an innovative meteor detection system that integrates high-speed photodiode detectors with traditional camera-based systems. The employs four photodiodes to record changes in sky brightness at 100 Hz, enabling and the observation of their dynamics. technology serves as a valuable complement existing imaging techniques, offering cost-effective solution for measuring ablation frequencies beyond capabilities We showcase findings from Perseid shower, demonstrating...
Heliophysics phenomena on the Sun, such as radio bursts, can strongly affect satellites and ground-based electronic systems. Therefore, an insight into actual image of Sun with good spatial temporal resolution is crucial. In this paper, we explore possibility using fully convolutional networks (FCNs) to improve images acquired from remotely operated small solar telescopes whose limited by size lens aperture atmospheric turbulence. For purpose, use chromosphere data 50 mm H $$\alpha$$...
Stellar rotation affects the transport of chemical elements and angular momentum is therefore a key process during stellar evolution, which still not fully understood. This especially true for massive stars, are important enrichment universe. It to constrain their physical parameters internal distribution calibrate structure evolution models. can be probed through asteroseismic studies rotationally split oscillations but such results quite rare, stars more than Sun. The SPB star HD201433...
ABSTRACT The Hunting Outbursting Young Stars (HOYS) project performs long-term, optical, multifilter, high cadence monitoring of 25 nearby young clusters and star-forming regions. Utilizing Gaia DR3 data, we have identified about 17 000 potential stellar members in 45 coherent astrometric groups these fields. Twenty one them are clear or stars within 1 kpc they contain 9143 selected members. cluster distances, proper motions, membership numbers determined. We analyse long-term (≈ 7 yr) V-,...
Context. Be stars are important reference laboratories for the investigation of viscous Keplerian discs. In some cases, disc feeder mechanism involves a combination non-radial pulsation (NRP) modes. Aims. We seek to understand whether high-cadence photometry can shed further light on role NRP modes in facilitating rotation-supported mass loss. Methods. The BRITE-Constellation nanosatellites obtained mmag 28 Cygni 11 months 2014–2016. added observations with Solar Mass Ejection Imager (SMEI)...
Exoplanet properties crucially depend on their host stars' parameters. In case the exoplanet star shows pulsations, asteroseismology can be used for an improved description of stellar We aim to revisit pulsational beta Pic and identify its pulsation modes from normalised amplitudes in five different passbands. also investigate potential presence a magnetic field. conduct frequency analysis using three seasons BRITE-Constellation observations BRITE blue red filters, ~620-day long bRing light...
Abstract Hot Jupiters—short-period giant planets—were the first extrasolar planets to be discovered, but many questions about their origin remain. NASA’s Transiting Exoplanet Survey Satellite (TESS), an all-sky search for transiting planets, presents opportunity address these by constructing a uniform sample of hot Jupiters demographic study through new detections and unifying work previous ground-based transit surveys. As results effort build this large we report here discovery 10...
We report a simultaneous ground and space-based photometric study of the Beta Cephei star Nu Eridani. Half year observations have been obtained by four five satellites constituting BRITE-Constellation, supplemented with ground-based photoelectric photometry. show that carefully combining two data sets virtually eliminates aliasing problem often hampers time-series analyses. detect 40 periodic signals intrinsic to in light curves. Despite lower detection limit we do not recover all pressure...