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DC Field | Value | Language |
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dc.citation.endPage | 1109 | - |
dc.citation.number | 1 | - |
dc.citation.startPage | 1093 | - |
dc.citation.title | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | - |
dc.citation.volume | 495 | - |
dc.contributor.author | Hui, C. Y. | - |
dc.contributor.author | Lee, Jongsu | - |
dc.contributor.author | Li, K. L. | - |
dc.contributor.author | Kim, Sangin | - |
dc.contributor.author | Oh, Kwangmin | - |
dc.contributor.author | Luo, Shengda | - |
dc.contributor.author | Leung, Alex P. | - |
dc.contributor.author | Kong, A. K. H. | - |
dc.contributor.author | Takata, J. | - |
dc.contributor.author | Cheng, K. S. | - |
dc.date.accessioned | 2023-12-21T17:36:29Z | - |
dc.date.available | 2023-12-21T17:36:29Z | - |
dc.date.created | 2020-07-01 | - |
dc.date.issued | 2020-06 | - |
dc.description.abstract | We report the results of searching pulsar-like candidates from the unidentified objects in the Third Catalog of Hard Fermi-LAT Sources (3FHL). Using a machine-learning-based classification scheme with a nominal accuracy of similar to 98 per cent, we have selected 27 pulsar-like objects from 200 unidentified 3FHL sources for an identification campaign. Using archival data, X-ray sources are found within the gamma-ray error ellipses of 10 3FHL pulsar-like candidates. Within the error circles of the much better constrained X-ray positions, we have also searched for the optical/infrared counterparts and examined their spectral energy distributions. Among our shortlisted candidates, the most secure identification is the association of 3FHL J1823.3-1339 and its X-ray counterpart with the globular cluster Mercer 5. The gamma-rays from the source can be contributed by a population of millisecond pulsars residing in the cluster. This makes Mercer 5 as one of the slowly growing hard gamma-ray population of globular clusters with emission >10 GeV. Very recently, another candidate picked by our classification scheme, 3FHL J1405.1-6118, has been identified as a new gamma-ray binary with an orbital period of 13.7 d. Our X-ray analysis with a short Chandra observation has found a possible periodic signal candidate of similar to 1.4 h and a putative extended X-ray tail of similar to 20 arcsec long. Spectral energy distribution of its optical/infrared counterpart conforms with a blackbody of T-bb similar to 40 000 K and R-bb similar to 12 R-circle dot at a distance of 7.7 kpc. This is consistent with its identification as an early O star as found by infrared spectroscopy. | - |
dc.identifier.bibliographicCitation | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, v.495, no.1, pp.1093 - 1109 | - |
dc.identifier.doi | 10.1093/mnras/staa1113 | - |
dc.identifier.issn | 0035-8711 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/32994 | - |
dc.identifier.url | https://academic.oup.com/mnras/article/495/1/1093/5824667 | - |
dc.identifier.wosid | 000539101400082 | - |
dc.language | 영어 | - |
dc.publisher | OXFORD UNIV PRESS | - |
dc.title | Searches for pulsar-like candidates from unidentified objects in the Third Catalog of Hard Fermi-LAT Sources with machine learning techniques | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Astronomy & Astrophysics | - |
dc.relation.journalResearchArea | Astronomy & Astrophysics | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | pulsars: general | - |
dc.subject.keywordAuthor | gamma-rays: stars | - |
dc.subject.keywordAuthor | X-rays: binaries | - |
dc.subject.keywordAuthor | X-rays: stars | - |
dc.subject.keywordPlus | GAMMA-RAY EMISSION | - |
dc.subject.keywordPlus | GLOBULAR-CLUSTERS | - |
dc.subject.keywordPlus | DYNAMICAL FORMATION | - |
dc.subject.keywordPlus | ENERGY | - |
dc.subject.keywordPlus | DISCOVERY | - |
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