| Title: | Detecting and characterizing pulsar halos with the Cherenkov Telescope Array Observatory |
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| Authors: | ID Eckner, Christopher (Author)
ID Bhattacharyya, Saptashwa (Author)
ID Pérez Romero, Judit (Author)
ID Stanič, Samo (Author)
ID Vodeb, Veronika (Author)
ID Vorobiov, Serguei (Author)
ID Zavrtanik, Danilo (Author)
ID Zavrtanik, Marko (Author)
ID Živec, Miha (Author), et al. |
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| Files: |  ICRC2023_772.pdf (2,20 MB)
MD5: E818D8DE7A205774781DB65D735EEDD5
 ICRC2023_772_a1.xml (361,46 KB)
MD5: DE15915F83529BEA03341B5A0BABA7C2
 https://pos.sissa.it/444
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| Language: | English |
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| Work type: | Unknown |
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| Typology: | 1.08 - Published Scientific Conference Contribution |
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| Organization: | UNG - University of Nova Gorica
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| Abstract: | The recently identified source class of pulsar halos may be populated and bright enough at TeV energies to constitute a large fraction of the sources that will be observed with the Cherenkov Telescope Array (CTA), especially in the context of the planned Galactic Plane Survey (GPS). In this study, we examine the prospects offered by CTA for the detection and characterization of such objects. CTA will cover energies from 20 GeV to 300 TeV, bridging the ranges already probed with the Fermi Large Area Telescope and High Altitude Water Cherenkov Observatory, and will also have a better angular resolution than the latter instruments, thus providing a complementary look at the phenomenon. From simple models for individual pulsar halos and their population in the Milky Way, we examine under which conditions such sources can be detected and studied from the GPS observations. In the framework of a full spatial-spectral likelihood analysis, using the most recent estimates for the instrument response function and prototypes for the science tools, we derive the spectral and morphological sensitivity of the CTA GPS to the specific intensity distribution of pulsar halos. From these, we quantify the physical parameters for which pulsar halos can be detected, identified, and characterized, and what fraction of the Galactic population could be accessible. We also discuss the effect of interstellar emission and data analysis systematics on these prospects. |
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| Keywords: | Cherenkov Telescope Array, CTA, very-high-energy gamma-ray astroparticle physics, instrument response functions, machine learning |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Publication date: | 01.01.2023 |
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| Year of publishing: | 2023 |
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| Number of pages: | str. 1-16 |
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| PID: | 20.500.12556/RUNG-8453-c4b4064b-a95a-f733-e2bf-45f1e29fd7f4  |
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| COBISS.SI-ID: | 165802243 |
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| UDC: | 539.1 |
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| ISSN on article: | 1824-8039 |
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| NUK URN: | URN:SI:UNG:REP:U6KEBCBY |
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| Publication date in RUNG: | 26.09.2023 |
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| Views: | 1428 |
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| Downloads: | 8 |
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