Statistics of the Planck CMB signal in direction of gamma-ray bursts from the BATSE and BeppoSAX catalogs

TL;DR

This study analyzes the spatial correlation between gamma-ray bursts from BATSE and BeppoSAX catalogs and Planck CMB data, revealing potential systematic effects and differences based on GRB duration.

Contribution

It introduces a multi-method approach to examine the relationship between GRB locations and CMB fluctuations, highlighting new correlations and distinctions between short and long GRBs.

Findings

Discovered correlation between GRB positions and CMB fluctuations.

Identified differences in CMB fluctuations for short and long GRBs.

Indicated possible systematic observational effects.

Abstract

Distribution of gamma-ray bursts (GRBs) from catalogs of the BATSE and BeppoSAX space observatories relative to the cosmic microwave background (CMB) data by Planck space mission is studied. Three methods were applied for data analysis: 1) a histogram of CMB signal values in GRB directions, 2) mosaic correlation maps calculated for GRB locations and CMB distribution, 3) calculation of an average response in the area of "an average population GRB" on the CMB map. A correlation between GRB locations and CMB fluctuations was discovered which can be interpreted as systematic effects in the process of observations. Besides, in averaged areas of CMB maps a difference between distributions of average fluctuations for short and long GRBs was detected, which can be caused by different natures of these events.