# ICRC 2021

Jul 12 – 23, 2021
Online
Europe/Berlin timezone

## The luminosity function of TeV-emitting BL Lacs: observations of an HBL sample with VERITAS

Jul 13, 2021, 6:00 PM
1h 30m
04

#### 04

Talk GAI | Gamma Ray Indirect

### Speaker

Manel Errando (Washington Uhniversity in St Louis)

### Description

High-frequency-peaked BL Lacs (HBLs) dominate the extragalactic TeV sky, with more than 50 objects detected by the current generation of TeV observatories. Still, the properties of TeV-emitting HBLs as a population are poorly understood due to biases introduced by the observing strategies of Cherenkov Telescopes, limiting our ability to estimate the potential contribution of TeV blazars to the diffuse neutrino, gamma-ray, and cosmic-ray backgrounds as well as their role in the late-stage evolution of active galactic nuclei. The VERITAS Collaboration has designed a program to quantify and minimize observational biases by selecting a sample of 36 HBLs and measuring their TeV fluxes at times that are not motivated by high-flux states. First results from this survey, which is the basis for a measurement of the luminosity function of TeV-emitting HBLs, will be presented at the conference.

### Keywords

AGN, blazars, surveys, neutrinos, gamma-rays, TeV

Collaboration VERITAS Experimental Results

### Primary authors

Manel Errando (Washington Uhniversity in St Louis)