Using SRG/eROSITA to estimate soft proton fluxes at the ATHENA detectors Article Swipe
Emanuele Perinati
,
M. J. Freyberg
,
Michael C. H. Yeung
,
Christian Pommranz
,
B. Hess
,
Sebastian Diebold
,
C. Tenzer
,
A. Santangelo
·
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.48550/arxiv.2401.17301
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.48550/arxiv.2401.17301
Context: Environmental soft protons have affected the performance of the X-ray detectors on board Chandra and XMM-Newton, and they pose a threat for future high energy astrophysics missions with larger aperture, such as ATHENA. Aims: We aim at estimating soft proton fluxes at the ATHENA detectors independently of any modelisation of the external fluxes in the space environment.We analysed the background data measured by eROSITA on board SRG, and with the help of simulations we defined a range of values for the potential count-rate of quiet-time soft protons focused through the mirror shells. We used it to derive an estimate of soft proton fluxes at the ATHENA detectors, assuming ATHENA in the same L2-orbit as SRG. Results: The scaling, based on the computed proton transmission yields of the optics and optical/thermal filters of eROSITA and ATHENA, indicates that the soft proton induced WFI and X-IFU backgrounds could be expected close to the requirement. Conclusions: No soft proton fluxes detrimental to the observations have been suffered by eROSITA during its all-sky survey in orbit around L2. Regardless of where ATHENA will be placed (L1 or L2), our analysis suggests that increasing somewhat the thickness of the WFI optical blocking filter, e.g. by 30%, would help to reduce the soft proton flux onto the detector, in case the planned magnetic diverters perform worse than expected due to soft proton neutralisation at the mirror level.
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Metadata
- Type
- preprint
- Language
- en
- Landing Page
- http://arxiv.org/abs/2401.17301
- https://arxiv.org/pdf/2401.17301
- OA Status
- green
- Cited By
- 1
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4391421574
All OpenAlex metadata
Raw OpenAlex JSON
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https://openalex.org/W4391421574Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.48550/arxiv.2401.17301Digital Object Identifier
- Title
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Using SRG/eROSITA to estimate soft proton fluxes at the ATHENA detectorsWork title
- Type
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preprintOpenAlex work type
- Language
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enPrimary language
- Publication year
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2024Year of publication
- Publication date
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2024-01-30Full publication date if available
- Authors
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Emanuele Perinati, M. J. Freyberg, Michael C. H. Yeung, Christian Pommranz, B. Hess, Sebastian Diebold, C. Tenzer, A. SantangeloList of authors in order
- Landing page
-
https://arxiv.org/abs/2401.17301Publisher landing page
- PDF URL
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https://arxiv.org/pdf/2401.17301Direct link to full text PDF
- Open access
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YesWhether a free full text is available
- OA status
-
greenOpen access status per OpenAlex
- OA URL
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https://arxiv.org/pdf/2401.17301Direct OA link when available
- Concepts
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Proton, Physics, Detector, Nuclear physics, OpticsTop concepts (fields/topics) attached by OpenAlex
- Cited by
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1Total citation count in OpenAlex
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2024: 1Per-year citation counts (last 5 years)
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10Other works algorithmically related by OpenAlex
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