The First Insight-HXMT Gamma-Ray Burst Catalog: The First Four Years

Abstract

The Hard X-ray Modulation Telescope (Insight-HXMT), is China's first X-ray astronomy satellite launched on June 15, 2017. The anti-coincidence CsI detectors of the High Energy X-ray telescope (HE) onboard Insight-HXMT could serve as an all-sky gamma-ray monitor in about 0.2-3 MeV. In its first four years of operation, Insight-HXMT has detected 322 Gamma-Ray Bursts (GRBs) by offline search pipeline including blind search and targeted search. For the GOLDEN sample of Insight-HXMT GRBs, joint analyses were performed with other GRB missions, including Fermi Gamma-ray Burst Monitor (Fermi/GBM), Swift Burst Alert Telescope (Swift/BAT) and Gravitational wave high-energy Electromagnetic Counterpart All-sky Monitor (GECAM). It shows that Insight-HXMT can provide better constraint on GRB spectrum at higher energy band. The properties of Insight-HXMT GRBs are reported in detail, including their trigger time, duration, spectral parameters, peak fluxes of different time scales and fluence. This catalog is an official product of the Insight-HXMT GRB team.

46 pages, 22 figures, accepted by APJS

References in corpus (7)

• High-energy electromagnetic offline follow-up of LIGO-Virgo gravitational-wave binary coalescence candidate events
• Insight-HXMT observations of the first binary neutron star merger GW170817
• The Insight-HXMT mission and its recent progresses
• Search for Gamma-Ray Bursts and Gravitational Wave Electromagnetic Counterparts with High Energy X-ray Telescope of \textit{Insight}-HXMT
• Updates to the Fermi-GBM Short GRB Targeted Offline Search in Preparation for LIGO's Second Observing Run
• The Low Energy X-ray telescope (LE) onboard the Insight-HXMT astronomy satellite
• The High Energy X-ray telescope (HE) onboard the Insight-HXMT astronomy satellite

Cited by in corpus (9)

• GRB minimum variability timescale with Insight-HXMT and Swift: implications for progenitor models, dissipation physics and GRB classifications
• A short gamma-ray burst from a proto-magnetar remnant
• Distribution of number of peaks within a long gamma-ray burst
• Burst search method based on likelihood ratio in Poisson Statistics
• The GW-Universe Toolbox III: simulating joint observations of gravitational waves and gamma-ray bursts
• GRB 210121A: Observation of photospheric emissions from different regimes and the evolution of the outflow
• GRB 221009A with an unconventional precursor: a typical two-stage collapsar scenario?
• A Comprehensive Analysis of Insight-HXMT Gamma-Ray Burst Data. I. Power Density Spectrum
• A search for periodic activity in multi-peaked long gamma-ray bursts