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Title:Exploring the population of Galactic very-high-energy γ-ray sources
Authors:ID Steppa, Constantin (Author)
ID Bhattacharyya, Saptashwa (Author)
ID MARČUN, Barbara (Author)
ID Pérez Romero, Judit (Author)
ID Stanič, Samo (Author)
ID Vodeb, Veronika (Author)
ID Vorobiov, Serguei (Author)
ID Zaharijas, Gabrijela (Author)
ID Zavrtanik, Marko (Author)
ID Zavrtanik, Danilo (Author)
ID Živec, Miha (Author), et al.
Files:.pdf ICRC2021_798.pdf (744,16 KB)
MD5: F1E2CFA4DE096BFF57ECF95872173F21
 
URL https://pos.sissa.it/395/
 
URL https://pos.sissa.it/395/798/pdf
 
Language:English
Work type:Not categorized
Typology:1.08 - Published Scientific Conference Contribution
Organization:UNG - University of Nova Gorica
Abstract:At very high energies (VHE), the emission of γ rays is dominated by discrete sources. Due to the limited resolution and sensitivity of current-generation instruments, only a small fraction of the total Galactic population of VHE γ-ray sources has been detected significantly. The larger part of the population can be expected to contribute as a di˙use signal alongside emission originating from propagating cosmic rays. Without quantifying the source population, it is not possible to disentangle these two components. Based on the H.E.S.S. Galactic plane survey, a numerical approach has been taken to develop a model of the population of Galactic VHE γ-ray sources, which is shown to account accurately for the observational bias. We present estimates of the absolute number of sources in the Galactic Plane and their contribution to the total VHE γ-ray emission for five di˙erent spatial source distributions. Prospects for CTA and its ability to constrain the model are discussed. Finally, first results of an extension of our modelling approach using machine learning to extract more information from the available data set are presented.
Keywords:Cherenkov Telescope Array, very-high energy gamma-rays, gamma-ray sources
Publication status:Published
Year of publishing:2021
PID:20.500.12556/RUNG-8430 New window
COBISS.SI-ID:164865539 New window
NUK URN:URN:SI:UNG:REP:SNFYNOSN
Publication date in RUNG:18.09.2023
Views:1451
Downloads:6
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Record is a part of a monograph

Title:37th International Cosmic Ray Conference : ICRC2021
Place of publishing:Trst, Italija
Year of publishing:2021

Document is financed by a project

Funder:ARRS - Slovenian Research Agency
Project number:P1-0031
Name:Večglasniška astrofizika

Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.

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