The Konus-Wind catalog of gamma-ray bursts with known redshifts. I. Bursts detected in the triggered mode

TL;DR

This catalog of 150 gamma-ray bursts detected by Konus-Wind from 1997 to 2016 provides comprehensive temporal and spectral analyses, estimates of energetics, and explores their cosmological implications, confirming key GRB relations.

Contribution

The paper presents the largest set of cosmological GRBs with detailed spectral and temporal analysis, including energetics and evolution, extending previous studies with a broad energy band and redshift range.

Findings

Confirmed the Amati and Yonetoku relations for Type II GRBs.

Estimated the GRB detection horizon extends to z ~ 16.6.

Derived GRB luminosity and formation rate evolution consistent with prior research.

Abstract

In this catalog, we present the results of a systematic study of gamma-ray bursts (GRBs) with reliable redshift estimates detected in the triggered mode of the Konus-Wind (KW) experiment during the period from 1997 February to 2016 June. The sample consists of 150 GRBs (including twelve short/hard bursts) and represents the largest set of cosmological GRBs studied to date over a broad energy band. From the temporal and spectral analyses of the sample, we provide the burst durations, the spectral lags, the results of spectral fits with two model functions, the total energy fluences, and the peak energy fluxes. Based on the GRB redshifts, which span the range 0.1 <= z <= 5, we estimate the rest-frame, isotropic-equivalent energy and peak luminosity. For 32 GRBs with reasonably-constrained jet breaks we provide the collimation-corrected values of the energetics. We consider the behavior of the rest-frame GRB parameters in the hardness-duration and hardness-intensity planes, and confirm the "Amati" and "Yonetoku" relations for Type II GRBs. The correction for the jet collimation does not improve these correlations for the KW sample. We discuss the influence of instrumental selection effects on the GRB parameter distributions and estimate the KW GRB detection horizon, which extends to z ~ 16.6, stressing the importance of GRBs as probes of the early Universe. Accounting for the instrumental bias, we estimate the KW GRB luminosity evolution, luminosity and isotropic-energy functions, and the evolution of the GRB formation rate, which are in general agreement with those obtained in previous studies.