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  Characterization of the particle-induced background of XMM-Newton EPIC-pn: Short- and long-term variability

Bulbul, E., Kraft, R., Nulsen, P., Freyberg, M., Miller, E. D., Grant, C., et al. (2020). Characterization of the particle-induced background of XMM-Newton EPIC-pn: Short- and long-term variability. The Astrophysical Journal, 891(1): 13. doi:10.3847/1538-4357/ab698a.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-BFE1-5 Version Permalink: http://hdl.handle.net/21.11116/0000-0006-BFE2-4
Genre: Journal Article

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 Creators:
Bulbul, Esra, Author
Kraft, Ralph, Author
Nulsen, Paul, Author
Freyberg, Michael1, Author              
Miller, Eric D., Author
Grant, Catherine, Author
Bautz, Mark W., Author
Burrows, David N., Author
Allen, Steven, Author
Eraerds, Tanja1, Author              
Fioretti, Valentina, Author
Gastaldello, Fabio, Author
Ghirardini, Vittorio, Author
Hall, David, Author
Meidinger, Norbert1, Author              
Molendi, Silvano, Author
Rau, Arne1, Author              
Wilkins, Dan, Author
Wilms, Joern, Author
Affiliations:
1High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck Society, ou_159890              

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 Abstract: The particle-induced background of X-ray observatories is produced by galactic cosmic ray (GCR) primary protons, electrons, and He ions. Events due to direct interaction with the detector are usually removed by onboard processing. The interactions of these primary particles with the detector environment produce secondary particles that mimic X-ray events from celestial sources, and are much more difficult to identify. The filter-wheel closed data from the XMM-Newton EPIC-pn camera in small window mode (SWM) contains both the X-ray-like background events, and the events due to direct interactions with the primary particles. From this data, we demonstrate that X-ray-like background events are spatially correlated with the primary particle interaction. This result can be used to further characterize and reduce the non-X-ray background in silicon-based X-ray detectors in current and future missions. We also show that spectrum and pattern fractions of secondary particle events are different from those produced by cosmic X-rays.

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 Dates: 2020-02-27
 Publication Status: Published online
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 Identifiers: DOI: 10.3847/1538-4357/ab698a
Other: LOCALID: 3244945
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Title: The Astrophysical Journal
Source Genre: Journal
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Publ. Info: Bristol; Vienna : IOP Publishing; IAEA
Pages: - Volume / Issue: 891 (1) Sequence Number: 13 Start / End Page: - Identifier: ISSN: 0004-637X
CoNE: https://pure.mpg.de/cone/journals/resource/954922828215_3