69 citations · 178 across the 17 of their papers we have counts for
18 papers
Correlation between X-ray and gamma data of Swift measurements
Istvan I. Racz, Lajos G. Balazs, Istvan Horvath +1
Several studies over the last two decades have used canonical correlation analysis (CCA) to study the relationships between main γ-ray (e.g. fluence, peak flux, and duration) and m…
Gamma-Ray Bursts and Optical Brightness: Insights from Swift Satellite
Istvan I. Racz, Yasmin Nehme, Lajos G. Balazs
During the examination of optical properties of gamma-ray bursts (GRBs) measured during the life of the Neil Gehrels Swift Observatory satellite, significant discoveries were made.…
Spheroidal Resampling Analysis of High-Redshift Gamma-Ray Burst Spatial Densities
Istvan Horvath, Zsolt Bagoly, Lajos G. Balazs +6
Gamma-ray bursts (GRBs) are bright transient sources that can be observed at high redshift. They can therefore be used as tracers of the distant large-scale structure, although the…
Reanalysing large-scale structure using an updated gamma-ray burst spatial density approach
Istvan Horvath, Zsolt Bagoly, Jon Hakkila +6
In the past few decades, large universal structures have been found that challenge the homogeneity and isotropy expected in standard cosmological models. This study examines burst…
Scanning the Universe for Large-Scale Structures using Gamma-Ray Bursts
Istvan Horvath, Zsolt Bagoly, Lajos G. Balazs +5
In the past few decades, large universal structures have been found that challenge the homogeneity and isotropy expected in standard cosmological models. The largest of these, iden…
Mapping the Universe with Gamma-Ray Bursts
Istvan Horvath, Zsolt Bagoly, Lajos G. Balazs +7
We explore large-scale cosmic structure using the spatial distribution of 542 gamma-ray bursts (GRBs) having accurately measured positions and spectroscopic redshifts. Prominent co…
Some statistical remarks on GRBs jointly detected by Fermi and Swift satellites
Sandor Pinter, Lajos G. Balazs, Zsolt Bagoly +3
We made statistical analysis of the Fermi GBM and Swift BAT observational material, accumulated over 15 years. We studied how GRB parameters (T duration, fluence, peak flux)…
Does the GRB Duration Depend on Redshift?
I. Horvath, I. I. Racz, Z. Bagoly +2
Several hundred gamma-ray burst (GRB) redshifts have been determined to date. One of the other important properties-besides the distance-of the GRBs is the duration of the burst. I…
The Fermi GBM GRBs' multivariate statistics
Istvan I. Racz, Lajos G. Balázs, Zsolt Bagoly +2
Studying the GRBs' gamma-ray spectra may reveal some physical information of Gamma-ray Bursts. The Fermi satellite observed more than two thousand GRBs. The FERMIGBRST catalog cont…
Studying the variability of the X-ray spectral parameters of high-redshift GRBs' afterglows
Istvan I. Racz, Agnes J. Hortobagyi
The Swift satellite has observed more than a thousand GRBs with X-ray data. Almost a third of them have redshift measurement, too. Here we start to investigate the X-ray spectral f…
Exploring the pattern of the Galactic HI foreground of GRBs with the ATCA
H. Denes, P. A. Jones, L. V. Toth +12
The afterglow of a gamma ray burst (GRB) can give us valuable insight into the properties of its host galaxy. To correctly interpret the spectra of the afterglow we need to have a…
Gaussian-mixture-model-based cluster analysis of gamma-ray bursts in the BATSE catalog
B. G. Tóth, I. I. Rácz, I. Horváth
Clustering is an important tool to describe gamma-ray bursts (GRBs). We analyzed the Final BATSE Catalog using Gaussian-mixture-models-based clustering methods for six variables (d…
Multidimensional analysis of Fermi GBM gamma-ray bursts
I. Horvath, J. Hakkila, Z. Bagoly +4
The Fermi GBM catalog provides a large database with many measured variables that can be used to explore and verify gamma-ray burst classification results. We have used Principal C…
Statistical properties of Fermi GBM GRBs' spectra
Istvan I. Racz, Lajos G. Balázs, Istvan Horvath +2
Statistical studies of gamma-ray burst (GRB) spectra may result in important information on the physics of GRBs. The Fermi GBM catalog contains GRB parameters (peak energy, spectra…
Classifying GRB170817A / GW170817 in a Fermi duration - hardness plane
I. Horvath, B. G. Toth, J. Hakkila +5
GRB170817A, associated with the LIGO-Virgo GW170817 neutron-star merger event, lacks the short duration and hard spectrum of a Short gamma-ray burst (GRB) expected from long-standi…
Foreground of GRBs from AKARI FIS data
L. Viktor Toth, Yasuo Doi, Sarolta Zahorecz +7
A significant number of the parameters of a gamma-ray burst (GRB) and its host galaxy are calculated from the afterglow. There are various methods obtaining extinction values for t…
Survival analysis of the optical brightness of GRB host galaxies
I. I. Racz, L. G. Balazs, Z. Bagoly +1
We studied the unbiased optical brightness distribution which was calculated from the survival analysis of host galaxies and its relationship with the Swift GRB data of the host ga…
A giant ring-like structure at 0.78<z<0.86 displayed by GRBs
L. G. Balazs, Z. Bagoly, J. E. Hakkila +4
According to the cosmological principle, Universal large-scale structure is homogeneous and isotropic. The observable Universe, however, shows complex structures even on very large…