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DC Field | Value | Language |
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dc.citation.number | 2 | - |
dc.citation.startPage | 116 | - |
dc.citation.title | ASTROPHYSICAL JOURNAL | - |
dc.citation.volume | 846 | - |
dc.contributor.author | Hui, C. Y. | - |
dc.contributor.author | Lee, Jongsu | - |
dc.contributor.author | Kong, A. K. H. | - |
dc.contributor.author | Tam, P. H. T. | - |
dc.contributor.author | Takata, J. | - |
dc.contributor.author | Cheng, K. S. | - |
dc.contributor.author | Ryu, Dongsu | - |
dc.date.accessioned | 2023-12-21T21:45:22Z | - |
dc.date.available | 2023-12-21T21:45:22Z | - |
dc.date.created | 2017-10-10 | - |
dc.date.issued | 2017-09 | - |
dc.description.abstract | A recent study by Posselt et al. reported the deepest X-ray investigation of the Geminga pulsar wind nebula (PWN) by using Chandra X-ray Observatory. In comparison with previous studies of this system, a number of new findings have been reported, and we found that these suggest the possible variabilities in various components of this PWN. This motivates us to carry out a dedicated search for the morphological and spectral variations of this complex nebula. We have discovered variabilities on timescales from a few days to a few months from different components of the nebula. The fastest change occurred in the circumstellar environment at a rate of 80% of the speed of light. One of the most spectacular results is the wiggling of a half light-year long tail as an extension of the jet, which is significantly bent by the ram pressure. The jet wiggling occurred at a rate of about 20% of the speed of light. This twisted structure could possibly be a result of a propagating torsional Alfv'en wave. We have also found evidence of spectral hardening along this tail for a period of about nine months. | - |
dc.identifier.bibliographicCitation | ASTROPHYSICAL JOURNAL, v.846, no.2, pp.116 | - |
dc.identifier.doi | 10.3847/1538-4357/aa862c | - |
dc.identifier.issn | 0004-637X | - |
dc.identifier.scopusid | 2-s2.0-85029523273 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/22746 | - |
dc.identifier.url | http://iopscience.iop.org/article/10.3847/1538-4357/aa862c/meta | - |
dc.identifier.wosid | 000410064400002 | - |
dc.language | 영어 | - |
dc.publisher | IOP PUBLISHING LTD | - |
dc.title | Rapid X-Ray Variations of the Geminga Pulsar Wind Nebula | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Astronomy & Astrophysics | - |
dc.relation.journalResearchArea | Astronomy & Astrophysics | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | stars: pulsar: individual (PSR J0633+1746 | - |
dc.subject.keywordAuthor | Geminga) | - |
dc.subject.keywordPlus | INTERSTELLAR-MEDIUM | - |
dc.subject.keywordPlus | CRAB-NEBULA | - |
dc.subject.keywordPlus | JETS | - |
dc.subject.keywordPlus | ORIGIN | - |
dc.subject.keywordPlus | MODEL | - |
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