Target of Opportunity observations of flaring blazars with H.E.S.S.$\ $

TL;DR

This paper discusses H.E.S.S.'s Target of Opportunity program for observing flaring blazars, emphasizing rapid response to their extreme variability and recent observational results in the context of multiwavelength studies.

Contribution

It presents the H.E.S.S. blazar ToO program and highlights recent findings, advancing understanding of blazar flares through rapid, coordinated observations.

Findings

Detection of multiple blazar flares with H.E.S.S.

Improved temporal resolution of blazar variability

Enhanced multiwavelength observational strategies

Abstract

Blazars are the most common class of TeV extragalactic emitters. In the framework of the AGN unified model, they are understood as AGNs with a relativistic jet pointing close the line of sight. They are characterized by extreme variability, observed to be as fast as minutes. These flares are usually observed at multiple wavelengths and their study require fast reaction and coordination among multiwavelength observatories. An important part of blazars observations with the H.E.S.S. array of Cherenkov telescopes is thus in the form of Target of Opportunity (ToO) observations. In this contribution the H.E.S.S. blazar ToO program is presented, with a focus on recent results.