Testing cosmology and fundamental physics with the Cherenkov Telescope Array

CTA Consortium; H. Martínez-Huerta; J. Biteau; J. Lefaucheur; M. Meyer; S. Pita; I. Vovk

Testing cosmology and fundamental physics with the Cherenkov Telescope Array

CTA Consortium, H. Martínez-Huerta, J. Biteau, J. Lefaucheur, M. Meyer, S. Pita, I. Vovk

Research output: Contribution to conference › Paper › peer-review

Abstract

The Cherenkov Telescope Array (CTA) is the next generation ground-based observatory for γ-ray astronomy at energies above 30 GeV. Thanks to its unique capabilities, CTA observations will address a plethora of open questions in astrophysics, ranging from the origin of cosmic messengers to the exploration of the frontiers of physics. In this note, we present a comprehensive sensitivity study to assess the potential of CTA to measure the γ-ray absorption on the extragalactic background light (EBL), to constrain or detect intergalactic magnetic fields (IGMFs), and probe physics beyond the standard model such as axion-like particles (ALPs) and Lorentz invariance violation (LIV), which could modify the γ-ray spectra features expected from EBL absorption. Our results suggest that CTA will have unprecedented sensitivity to detect IGMF signatures and will probe so-far unexplored regions of the LIV and ALP parameter space. Furthermore, an indirect measurement of the EBL and of its evolution will be performed with unrivaled precision.

Original language	English
Publication status	Published - 2019
Externally published	Yes
Event	36th International Cosmic Ray Conference, ICRC 2019 - Madison, United States Duration: 24 Jul 2019 → 1 Aug 2019

Conference

Conference	36th International Cosmic Ray Conference, ICRC 2019
Country/Territory	United States
City	Madison
Period	24/7/19 → 1/8/19

Bibliographical note

Funding Information:
This work was conducted in the context of the CTA Physics Working Group. We gratefully acknowledge financial support from the agencies and organizations listed here: http://www.cta-observatory.org/consortium_acknowledgments/. HMH acknowledges FAPESP support No. 2015/15897-1 and 2017/03680-3 and the National Laboratory for Scientific Computing (LNCC/MCTI, Brazil) for providing HPC resources of the SDumont supercomputer (sdumont.lncc.br).

Publisher Copyright:
© Copyright owned by the author(s) under the terms of the Creative Commons

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title = "Testing cosmology and fundamental physics with the Cherenkov Telescope Array",

abstract = "The Cherenkov Telescope Array (CTA) is the next generation ground-based observatory for γ-ray astronomy at energies above 30 GeV. Thanks to its unique capabilities, CTA observations will address a plethora of open questions in astrophysics, ranging from the origin of cosmic messengers to the exploration of the frontiers of physics. In this note, we present a comprehensive sensitivity study to assess the potential of CTA to measure the γ-ray absorption on the extragalactic background light (EBL), to constrain or detect intergalactic magnetic fields (IGMFs), and probe physics beyond the standard model such as axion-like particles (ALPs) and Lorentz invariance violation (LIV), which could modify the γ-ray spectra features expected from EBL absorption. Our results suggest that CTA will have unprecedented sensitivity to detect IGMF signatures and will probe so-far unexplored regions of the LIV and ALP parameter space. Furthermore, an indirect measurement of the EBL and of its evolution will be performed with unrivaled precision.",

author = "{CTA Consortium} and H. Mart{\'i}nez-Huerta and J. Biteau and J. Lefaucheur and M. Meyer and S. Pita and I. Vovk",

note = "Funding Information: This work was conducted in the context of the CTA Physics Working Group. We gratefully acknowledge financial support from the agencies and organizations listed here: http://www.cta-observatory.org/consortium_acknowledgments/. HMH acknowledges FAPESP support No. 2015/15897-1 and 2017/03680-3 and the National Laboratory for Scientific Computing (LNCC/MCTI, Brazil) for providing HPC resources of the SDumont supercomputer (sdumont.lncc.br). Publisher Copyright: {\textcopyright} Copyright owned by the author(s) under the terms of the Creative Commons; 36th International Cosmic Ray Conference, ICRC 2019 ; Conference date: 24-07-2019 Through 01-08-2019",

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TY - CONF

T1 - Testing cosmology and fundamental physics with the Cherenkov Telescope Array

AU - CTA Consortium

AU - Martínez-Huerta, H.

AU - Biteau, J.

AU - Lefaucheur, J.

AU - Meyer, M.

AU - Pita, S.

AU - Vovk, I.

N1 - Funding Information: This work was conducted in the context of the CTA Physics Working Group. We gratefully acknowledge financial support from the agencies and organizations listed here: http://www.cta-observatory.org/consortium_acknowledgments/. HMH acknowledges FAPESP support No. 2015/15897-1 and 2017/03680-3 and the National Laboratory for Scientific Computing (LNCC/MCTI, Brazil) for providing HPC resources of the SDumont supercomputer (sdumont.lncc.br). Publisher Copyright: © Copyright owned by the author(s) under the terms of the Creative Commons

PY - 2019

Y1 - 2019

N2 - The Cherenkov Telescope Array (CTA) is the next generation ground-based observatory for γ-ray astronomy at energies above 30 GeV. Thanks to its unique capabilities, CTA observations will address a plethora of open questions in astrophysics, ranging from the origin of cosmic messengers to the exploration of the frontiers of physics. In this note, we present a comprehensive sensitivity study to assess the potential of CTA to measure the γ-ray absorption on the extragalactic background light (EBL), to constrain or detect intergalactic magnetic fields (IGMFs), and probe physics beyond the standard model such as axion-like particles (ALPs) and Lorentz invariance violation (LIV), which could modify the γ-ray spectra features expected from EBL absorption. Our results suggest that CTA will have unprecedented sensitivity to detect IGMF signatures and will probe so-far unexplored regions of the LIV and ALP parameter space. Furthermore, an indirect measurement of the EBL and of its evolution will be performed with unrivaled precision.

AB - The Cherenkov Telescope Array (CTA) is the next generation ground-based observatory for γ-ray astronomy at energies above 30 GeV. Thanks to its unique capabilities, CTA observations will address a plethora of open questions in astrophysics, ranging from the origin of cosmic messengers to the exploration of the frontiers of physics. In this note, we present a comprehensive sensitivity study to assess the potential of CTA to measure the γ-ray absorption on the extragalactic background light (EBL), to constrain or detect intergalactic magnetic fields (IGMFs), and probe physics beyond the standard model such as axion-like particles (ALPs) and Lorentz invariance violation (LIV), which could modify the γ-ray spectra features expected from EBL absorption. Our results suggest that CTA will have unprecedented sensitivity to detect IGMF signatures and will probe so-far unexplored regions of the LIV and ALP parameter space. Furthermore, an indirect measurement of the EBL and of its evolution will be performed with unrivaled precision.

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M3 - Paper

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T2 - 36th International Cosmic Ray Conference, ICRC 2019

Y2 - 24 July 2019 through 1 August 2019

ER -

Testing cosmology and fundamental physics with the Cherenkov Telescope Array

Abstract

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Bibliographical note

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