# New hard X-ray sources discovered in the ongoing INTEGRAL Galactic Plane survey after 14 years of observations

## TL;DR

This paper presents a catalog of 72 new hard X-ray sources in the Galactic Plane detected by INTEGRAL over 14 years, including potential identifications and many unclassified sources, expanding our understanding of high-energy astrophysical objects.

## Contribution

The study provides the first extensive catalog of new hard X-ray sources from INTEGRAL after 14 years, with potential identifications for most sources, enhancing the understanding of Galactic high-energy phenomena.

## Key findings

- 72 new hard X-ray sources detected at S/N>4.7 sigma
- 31 sources also detected by Swift/BAT survey
- 26 sources have possible astrophysical identifications

## Abstract

The International Gamma-Ray Astrophysics Laboratory (INTEGRAL) continues to successfully work in orbit after its launch in 2002. The mission provides the deepest ever survey of hard X-ray sources throughout the Galaxy at energies above 20 keV. We report on a catalogue of new hard X-ray source candidates based on the latest sky maps comprising 14 years of data acquired with the IBIS telescope onboard INTEGRAL in the Galactic Plane (|b|<17.5 deg). The current catalogue includes in total 72 hard X-ray sources detected at S/N>4.7 sigma and not known to previous INTEGRAL surveys. Among them, 31 objects have also been detected in the on-going all-sky survey by the BAT telescope of the Swift observatory. For 26 sources on the list, we suggest possible identifications: 21 active galactic nuclei, two cataclysmic variables, two isolated pulsars or pulsar wind nebulae, and one supernova remnant; 46 sources from the catalogue remain unclassified.