# Summary of the 13th IACHEC Meeting

## TL;DR

This paper summarizes the discussions and outcomes of the 13th IACHEC meeting, focusing on high-energy calibration, inter-calibration efforts, and standardization techniques for X-ray astronomical instruments.

## Contribution

It provides a comprehensive overview of current calibration practices, challenges, and proposed improvements discussed by international experts in high-energy astrophysics.

## Key findings

- Identification of key calibration sources
- Development of new statistical calibration techniques
- Coordination of multi-observatory calibration campaigns

## Abstract

We summarize the outcome of the 13th meeting of the International Astronomical Consortium for High Energy Calibration (IACHEC), held at Tenuta dei Ciclamini (Avigliano Umbro, Italy) in April 2018. Fifty-one scientists directly involved in the calibration of operational and future high-energy missions gathered during 3.5 days to discuss the current status of the X-ray payload inter-calibration and possible approaches to improve it. This summary consists of reports from the various working groups with topics ranging from the identification and characterization of standard calibration sources, multi-observatory cross-calibration campaigns, appropriate and new statistical techniques, calibration of instruments and characterization of background, and communication and preservation of knowledge and results for the benefit of the astronomical community.