64 citations · 531 across the 31 of their papers we have counts for
33 papers
Quasi-Periodic Oscillations in Gamma-Ray Bursts' Prompt Light Curves
Mariusz Tarnopolski
I report on the discovery of 34 new quasi-periodic oscillations (QPOs) in the prompt light curves of long gamma-ray bursts (GRBs) from the Swift/BAT catalog: with one or more const…
Distance to M87 as the Mode of the Modulus Distribution
Mariusz Tarnopolski
de Grijs and Bono (ApJS 2020, 246, 3) compiled a list of distances to M87 from the literature published in the last 100 years. They reported the arithmetic mean of the three most s…
Continuous Filament Network of the Local Universe
Anatoliy Tugay, Mariusz Tarnopolski
Simulated galaxy distributions are suitable for developing filament detection algorithms. However, samples of observed galaxies, being of limited size, cause difficulties that lead…
Comprehensive power spectral density analysis of the Fermi-LAT -ray light curves of selected blazars
Natalia Żywucka, Mariusz Tarnopolski, Volodymyr Marchenko +1
We present the results of the Fermi-Large Area Telescope (LAT) light curve (LC) modelling of selected blazars: six flat spectrum radio quasars (FSRQs) and five BL Lacertae (BL Lacs…
Graph-based clustering of gamma-ray bursts
Mariusz Tarnopolski
Aims. An attempt to classify gamma-ray bursts (GRBs) with a low level of supervision using the state-of-the-start approaches stemming from graph theory was undertaken. Methods. Gra…
How does the shape of gamma-ray bursts' pulses affect the duration distribution?
Mariusz Tarnopolski
Gamma-ray bursts (GRBs) come in two types, short and long. The distribution of logarithmic durations of long GRBs is asymmetric rather than Gaussian. Such an asymmetry, when modell…
A Comprehensive Power Spectral Density Analysis of Astronomical Time Series. II. The Swift/BAT Long Gamma-Ray Bursts
Mariusz Tarnopolski, Volodymyr Marchenko
We investigated the prompt light curves (LCs) of long gamma-ray bursts (GRBs) from the Swift/BAT catalog. We aimed to characterize their power spectral densities (PSDs), search for…
Searching for signatures of chaos in gamma-ray light curves of selected Fermi-LAT blazars
O. Ostapenko, M. Tarnopolski, N. Żywucka +1
Blazar variability appears to be stochastic in nature. However, a possibility of low-dimensional chaos was considered in the past, but with no unambiguous detection so far. If pres…
A comprehensive power spectral density analysis of astronomical time series I: the Fermi-LAT gamma-ray light curves of selected blazars
Mariusz Tarnopolski, Natalia Żywucka, Volodymyr Marchenko +1
We present the results of the \textit{Fermi}-LAT 10-years-long light curves (LCs) modeling of selected blazars: six flat spectrum radio quasars (FSRQs) and five BL Lacertae (BL Lac…
Can the Cosmological Dilation Explain the Skewness in the Gamma-Ray Burst Duration Distribution?
Mariusz Tarnopolski
In order to explain the origin of skewness in the gamma-ray burst (GRB) duration distribution, a statistical model, based on the cosmological time dilation and taking into account…
Optical variability modeling of newly identified blazar candidates behind Magellanic Clouds
Natalia Żywucka, Mariusz Tarnopolski, Markus Böttcher +2
We present an optical variability study of 44 newly identified blazar candidates behind the Magellanic Clouds, including 27 flat spectrum radio quasars (FSRQs) and 17 BL Lacertae o…
Optical variability modelling of newly identified blazar candidates behind Magellanic Clouds
Natalia Żywucka, Mariusz Tarnopolski, Markus Böttcher +2
We present results of a variability study in the optical band of 44 newly identified blazar candidates behind the Magellanic Clouds. Our sample contains 27 flat spectrum radio quas…
Multivariate analysis of BATSE gamma-ray burst properties using skewed distributions
Mariusz Tarnopolski
The number of classes of gamma-ray bursts (GRBs), besides the well-established short and long ones, remains a debatable issue. It was already shown, however, that when invoking ske…
Analytical representation of Gaussian processes in the plane
Mariusz Tarnopolski
Closed-form expressions, parametrized by the Hurst exponent and the length of a time series, are derived for paths of fractional Brownian motion (fBm) and fractional Gaussi…
Analysis of the durationhardness ratio plane of gamma-ray bursts with skewed distributions
Mariusz Tarnopolski
It was recently shown that the distributions of gamma-ray bursts from CGRO/BATSE and Fermi/GBM are well described by a mixture of only two skewed components, making…
Analysis of the duration--hardness ratio plane of gamma-ray bursts using skewed distributions
Mariusz Tarnopolski
The two widely accepted classes of gamma-ray bursts (GRBs), short and long, are with confidence ascribed to mergers of compact objects and collapse of massive stars, respectively.…
Modeling the price of Bitcoin with geometric fractional Brownian motion: a Monte Carlo approach
Mariusz Tarnopolski
The long-term dependence of Bitcoin (BTC), manifesting itself through a Hurst exponent , is exploited in order to predict future BTC/USD price. A Monte Carlo simulation with…
Rotation of an oblate satellite: Chaos control
Mariusz Tarnopolski
Aims. This paper investigates the chaotic rotation of an oblate satellite in the context of chaos control. Methods. A model of planar oscillations, described with the Beletskii equ…
Gamma Ray Burst Prompt correlations
Maria Dainotti, Roberta Del Vecchio, Mariusz Tarnopolski
The mechanism responsible for the prompt emission of gamma-ray bursts (GRBs) is still a debated issue. The prompt phase-related GRB correlations can allow to discriminate among the…
Influence of a second satellite on the rotational dynamics of an oblate moon
Mariusz Tarnopolski
The gravitational influence of a second satellite on the rotation of an oblate moon is numerically examined. A simplified model, assuming the axis of rotation perpendicular to the…
Analysis of the observed and intrinsic durations of gamma-ray bursts with known redshift
Mariusz Tarnopolski
The duration distribution of 408 GRBs with measured both duration and redshift is examined. Mixtures of a number of distributions (standard normal, skew-normal, sinh-a…
On the relationship between the Hurst exponent, the ratio of the mean square successive difference to the variance, and the number of turning points
Mariusz Tarnopolski
The long range dependence of the fractional Brownian motion (fBm), fractional Gaussian noise (fGn), and differentiated fGn (DfGn) is described by the Hurst exponent . Considerin…
Testing the anisotropy in the angular distribution of /GBM gamma-ray bursts
Mariusz Tarnopolski
Gamma-ray bursts (GRBs) were confirmed to be of extragalactic origin due to their isotropic angular distribution, combined with the fact that they exhibited an intensity distributi…
Analysis of the observed and intrinsic durations of /BAT gamma-ray bursts
Mariusz Tarnopolski
The duration distribution of 947 GRBs observed by /BAT, as well as its subsample of 347 events with measured redshift, allowing to examine the durations in both the observer…