Isolated Neutron Stars as Science Validation for <scp>XMM2ATHENA</scp>: Ensuring Robust Data for Future X‐Ray Astronomy
ABSTRACT The discovery of radio‐quiet, x‐ray thermally emitting isolated neutron stars (XINSs) in the ROSAT All‐Sky Survey revealed a previously overlooked component of the neutron star population. Advancements in x‐ray instrumentation and the availability of deep, wide‐area optical surveys now enable us to explore XINSs at fainter x‐ray fluxes and greater distances. In this study, we investigated candidates selected from the 4XMM‐DR9 catalogue using XMM‐Newton, focusing on long‐term flux stability, spectral characterisation, and astrometry. By leveraging resources from the XMM2ATHENA project—including updated catalogues, multiwavelength characterisation and machine learning classification—we refined our understanding of this sample of soft x‐ray emitters. Our findings enhance the characterisation of XINS candidates, laying the groundwork for more targeted investigations and future catalogue searches.
Authors
- C. Motch (ORCID: https://orcid.org/0000-0002-4298-5624)
- Sudip Chakraborty (ORCID: https://orcid.org/0000-0003-4872-8159)
- N. A. Webb (ORCID: https://orcid.org/0000-0002-2956-6062)
- D. Homan (ORCID: https://orcid.org/0000-0002-3243-874X)
- A. M. Pires (ORCID: https://orcid.org/0000-0002-4189-9994)
- A. Schwope (ORCID: https://orcid.org/0000-0003-3441-9355)
- A. Nebot Gómez-Morán (ORCID: https://orcid.org/0000-0003-2373-451X)
- Hugo Tranin (ORCID: https://orcid.org/0000-0001-6314-8131)
- J. Kurpas (ORCID: https://orcid.org/0000-0002-8360-092X)
- Iris Traulsen
- F.-X. Pineau
- J. Ballet (ORCID: https://orcid.org/0000-0002-8784-2977)
Institutions
- Centre National de la Recherche Scientifique (FR)
- Université Fédérale de Toulouse Midi-Pyrénées (FR)
- Chinese Academy of Sciences (CN)
- Université Paris Cité (FR)
- Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR)
- Université Paris-Saclay (FR)
- Leibniz Institute for Astrophysics Potsdam (DE)
- Observatoire astronomique de Strasbourg (FR)
- Astrophysique, Instrumentation et Modélisation (FR)
- CEA Paris-Saclay (FR)
- Institute of Geochemistry (CN)
Publication Details
- Journal
- Astronomische Nachrichten
- Published
- 2024-11-26
- DOI
- https://doi.org/10.1002/asna.20240116
- Primary Topic
- Astrophysical Phenomena and Observations
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- European Commission
- Chinese Academy of Sciences
- Deutsches Zentrum für Luft- und Raumfahrt
- National Key Research and Development Program of China
- Institute of Geochemistry, Chinese Academy of Sciences