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dc.contributor.author
H.E.S.S. Collaboration
dc.contributor.author
Sinha, Atreyee
dc.contributor.author
Baghmanyan, Vardan
dc.contributor.author
Peron, Giada
dc.contributor.author
Gallant, Yves A.
dc.contributor.author
Casanova, Sabrina
dc.contributor.author
Holler, Markus
dc.contributor.author
Mitchell, Alison M.W.
dc.contributor.author
Abdalla, Hassan
dc.contributor.author
Aharonian, F.
dc.contributor.author
Ait Benkhali, F.
dc.contributor.author
Angüner, E. O.
dc.contributor.author
Arcaro, Cornelia H.E.
dc.contributor.author
Armand, Céline
dc.contributor.author
Armstrong, Thomas P.
dc.contributor.author
Ashkar, Halim
dc.contributor.author
Backes, Michael
dc.contributor.author
Barbosa-Martins, V.
dc.contributor.author
Barnacka, Anna
dc.contributor.author
Barnard, Monica
dc.contributor.author
et al.
dc.date.accessioned
2023-03-31T10:17:36Z
dc.date.available
2023-01-06T06:16:53Z
dc.date.available
2023-03-31T10:08:34Z
dc.date.available
2023-03-31T10:17:36Z
dc.date.issued
2022-03-18
dc.identifier.issn
1824-8039
dc.identifier.other
10.22323/1.395.0790
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/590586
dc.identifier.doi
10.3929/ethz-b-000590586
dc.description.abstract
Cosmic Ray (CR) interactions with the dense gas inside Giant Molecular Clouds (GMCs) produce neutral pions, which in turn decay into gamma rays. Thus, the gamma ray emission from GMCs is a direct tracer of the cosmic ray density and the matter density inside the clouds. Detection of enhanced TeV emission from GMCs, i.e., an emission significantly larger than what is expected from the average Galactic cosmic rays illuminating the cloud, can imply a variation in the local cosmic ray density, due to, for example, the presence of a recent accelerator in proximity to the cloud. Such gamma-ray observations can be crucial in probing the cosmic ray distribution across our Galaxy, but are complicated to perform with present generation Imaging Atmospheric Cherenkov Telescopes (IACTs). These studies require differentiating between the strong cosmic-ray induced background, the large scale diffuse emission, and the emission from the clouds, which is difficult to the small field of view of present generation IACTs. In this contribution, we use H.E.S.S. data collected over 16 years to search for TeV emission from GMCs in the inner molecular galacto-centric ring of our Galaxy. We implement a 3D FoV likelihood technique, and simultaneously model the hadronic background, the galactic diffuse emission and the emission expected from known VHE sources to probe for excess TeV gamma ray emission from GMCs.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Sissa Medialab
en_US
dc.rights.uri
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject
Clouds
en_US
dc.subject
Cosmology
en_US
dc.subject
Gamma rays
en_US
dc.subject
Cosmic ray interactions
en_US
dc.subject
Dense gas
en_US
dc.subject
diffuse emission
en_US
dc.subject
Giant molecular clouds
en_US
dc.subject
Imaging atmospheric Cherenkov telescopes
en_US
dc.subject
Neutral pions
en_US
dc.subject
Ray density
en_US
dc.subject
TeV gamma-ray emission
en_US
dc.title
Search for enhanced TeV gamma-ray emission from Giant Molecular Clouds using H.E.S.S.
en_US
dc.type
Conference Paper
dc.rights.license
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
dc.date.published
2021-07-28
ethz.book.title
Proceedings of 37th International Cosmic Ray Conference
en_US
ethz.journal.title
PoS: Proceedings of Science
ethz.journal.volume
395
en_US
ethz.journal.abbreviated
Pos proc. sci.
ethz.pages.start
790
en_US
ethz.size
10 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.event
37th International Cosmic Ray Conference (ICRC 2021)
en_US
ethz.event.location
Online
en_US
ethz.event.date
July 12-23, 2021
en_US
ethz.identifier.scopus
ethz.publication.place
Trieste
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02010 - Dep. Physik / Dep. of Physics
en_US
ethz.date.deposited
2023-01-06T06:16:58Z
ethz.source
SCOPUS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2023-03-31T10:08:36Z
ethz.rosetta.lastUpdated
2024-02-02T21:27:17Z
ethz.rosetta.versionExported
true
ethz.COinS
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