A Markedly Expanded Sample of Candidate X-Ray-emitting Isolated Neutron Stars
The current sample of 12 radio-quiet isolated neutron stars that emit strongly in X-rays (XINSs) is both small and heterogeneous, limiting its usefulness for understanding the physics of neutron star atmospheres and cooling rates and for constraining the equation of state of neutron degenerate matte...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2024-01-01
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| Series: | The Astrophysical Journal |
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| Online Access: | https://doi.org/10.3847/1538-4357/ad03e7 |
| _version_ | 1827383740541698048 |
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| author | Sebastian Demasi Scott F. Anderson Marcel A. Agüeros |
| author_facet | Sebastian Demasi Scott F. Anderson Marcel A. Agüeros |
| author_sort | Sebastian Demasi |
| collection | DOAJ |
| description | The current sample of 12 radio-quiet isolated neutron stars that emit strongly in X-rays (XINSs) is both small and heterogeneous, limiting its usefulness for understanding the physics of neutron star atmospheres and cooling rates and for constraining the equation of state of neutron degenerate matter. Utilizing the ROSAT 1RXS and 2RXS data sets, in conjunction with the Sloan Digital Sky Survey Data Release 17 and other companion multiwavelength surveys, we have extended previous searches for blank-field X-ray source candidate XINSs, ultimately recovering two known XINSs while identifying 46 new, unstudied candidate fields devoid of likely multiwavelength counterparts. In this publication, we describe our selection approach and provide detailed information regarding our sample of new candidate XINSs. Future opportunities to verify or to refute these X-ray sources as isolated neutron stars by obtaining more accurate X-ray source positions, quality X-ray spectra, or deeper optical imaging are also discussed. |
| first_indexed | 2024-03-08T14:45:38Z |
| format | Article |
| id | doaj.art-0c6aed0353064fd29d0993d7b24e7451 |
| institution | Directory Open Access Journal |
| issn | 1538-4357 |
| language | English |
| last_indexed | 2024-03-08T14:45:38Z |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj.art-0c6aed0353064fd29d0993d7b24e74512024-01-11T09:50:50ZengIOP PublishingThe Astrophysical Journal1538-43572024-01-0196113610.3847/1538-4357/ad03e7A Markedly Expanded Sample of Candidate X-Ray-emitting Isolated Neutron StarsSebastian Demasi0https://orcid.org/0009-0006-8478-7163Scott F. Anderson1https://orcid.org/0000-0002-6404-9562Marcel A. Agüeros2https://orcid.org/0000-0001-7077-3664Department of Astronomy, University of Washington , Box 351580, Seattle, WA 98195, USA ; demasi@uw.eduDepartment of Astronomy, University of Washington , Box 351580, Seattle, WA 98195, USA ; demasi@uw.eduDepartment of Astronomy, Columbia University , 550 West 120th Street, New York, NY 10027, USA; Laboratoire d’astrophysique de Bordeaux, Univ. Bordeaux , CNRS, B18N, Allée Geoffroy Saint-Hilaire, F-33615 Pessac, FranceThe current sample of 12 radio-quiet isolated neutron stars that emit strongly in X-rays (XINSs) is both small and heterogeneous, limiting its usefulness for understanding the physics of neutron star atmospheres and cooling rates and for constraining the equation of state of neutron degenerate matter. Utilizing the ROSAT 1RXS and 2RXS data sets, in conjunction with the Sloan Digital Sky Survey Data Release 17 and other companion multiwavelength surveys, we have extended previous searches for blank-field X-ray source candidate XINSs, ultimately recovering two known XINSs while identifying 46 new, unstudied candidate fields devoid of likely multiwavelength counterparts. In this publication, we describe our selection approach and provide detailed information regarding our sample of new candidate XINSs. Future opportunities to verify or to refute these X-ray sources as isolated neutron stars by obtaining more accurate X-ray source positions, quality X-ray spectra, or deeper optical imaging are also discussed.https://doi.org/10.3847/1538-4357/ad03e7Neutron starsX-ray surveys |
| spellingShingle | Sebastian Demasi Scott F. Anderson Marcel A. Agüeros A Markedly Expanded Sample of Candidate X-Ray-emitting Isolated Neutron Stars The Astrophysical Journal Neutron stars X-ray surveys |
| title | A Markedly Expanded Sample of Candidate X-Ray-emitting Isolated Neutron Stars |
| title_full | A Markedly Expanded Sample of Candidate X-Ray-emitting Isolated Neutron Stars |
| title_fullStr | A Markedly Expanded Sample of Candidate X-Ray-emitting Isolated Neutron Stars |
| title_full_unstemmed | A Markedly Expanded Sample of Candidate X-Ray-emitting Isolated Neutron Stars |
| title_short | A Markedly Expanded Sample of Candidate X-Ray-emitting Isolated Neutron Stars |
| title_sort | markedly expanded sample of candidate x ray emitting isolated neutron stars |
| topic | Neutron stars X-ray surveys |
| url | https://doi.org/10.3847/1538-4357/ad03e7 |
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