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Article: A Possible 55-day X-ray Period of the Ultraluminous Accreting Pulsar M82 X-2
Title | A Possible 55-day X-ray Period of the Ultraluminous Accreting Pulsar M82 X-2 |
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Authors | |
Keywords | Galaxies: individual: M82 Methods: data analysis X-rays: binaries X-rays: individual: M82 X-1 X-rays: individual: M82 X-2 |
Issue Date | 2016 |
Publisher | Oxford University press, co-published with Royal Astronomical Society. The Journal's web site is located at http://www.oxfordjournals.org/our_journals/mnras/ |
Citation | Monthly Notices of the Royal Astronomical Society, 2016, v. 461 n. 4, p. 4395-4399 How to Cite? |
Abstract | We report a possible detection of a 55-day X-ray modulation for the ultraluminous accreting pulsar M82 X-2 from archival Chandra observations. Because M82 X-2 is known to have a 2.5-day orbital period, if the 55-day period is real, it will be the superorbital period of the system. We also investigated variabilities of other three nearby ultraluminous X-ray sources in the central region of M82 with the Chandra data and did not find any evidence of periodicities. Furthermore, we re-examined the previously reported 62-day periodicity near the central region of M82 by performing a systematic timing study with all the archival Rossi X-Ray Timing Explorer and Swift data. Using various dynamic timing analysis methods, we confirmed that the 62-day period is not stable, suggesting that it is not the orbital period of M82 X-1 in agreement with previous work. |
Persistent Identifier | http://hdl.handle.net/10722/229401 |
ISSN | 2023 Impact Factor: 4.7 2023 SCImago Journal Rankings: 1.621 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Kong, A. K. H. | - |
dc.contributor.author | Hu, CP | - |
dc.contributor.author | Lin, L. C. C. | - |
dc.contributor.author | Li, K. L. | - |
dc.contributor.author | Jin, R. | - |
dc.contributor.author | Liu, C. Y. | - |
dc.contributor.author | Yen, D. C.-C. | - |
dc.date.accessioned | 2016-08-23T14:10:55Z | - |
dc.date.available | 2016-08-23T14:10:55Z | - |
dc.date.issued | 2016 | - |
dc.identifier.citation | Monthly Notices of the Royal Astronomical Society, 2016, v. 461 n. 4, p. 4395-4399 | - |
dc.identifier.issn | 0035-8711 | - |
dc.identifier.uri | http://hdl.handle.net/10722/229401 | - |
dc.description.abstract | We report a possible detection of a 55-day X-ray modulation for the ultraluminous accreting pulsar M82 X-2 from archival Chandra observations. Because M82 X-2 is known to have a 2.5-day orbital period, if the 55-day period is real, it will be the superorbital period of the system. We also investigated variabilities of other three nearby ultraluminous X-ray sources in the central region of M82 with the Chandra data and did not find any evidence of periodicities. Furthermore, we re-examined the previously reported 62-day periodicity near the central region of M82 by performing a systematic timing study with all the archival Rossi X-Ray Timing Explorer and Swift data. Using various dynamic timing analysis methods, we confirmed that the 62-day period is not stable, suggesting that it is not the orbital period of M82 X-1 in agreement with previous work. | - |
dc.language | eng | - |
dc.publisher | Oxford University press, co-published with Royal Astronomical Society. The Journal's web site is located at http://www.oxfordjournals.org/our_journals/mnras/ | - |
dc.relation.ispartof | Monthly Notices of the Royal Astronomical Society | - |
dc.rights | This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society © 2016 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. | - |
dc.subject | Galaxies: individual: M82 | - |
dc.subject | Methods: data analysis | - |
dc.subject | X-rays: binaries | - |
dc.subject | X-rays: individual: M82 X-1 | - |
dc.subject | X-rays: individual: M82 X-2 | - |
dc.title | A Possible 55-day X-ray Period of the Ultraluminous Accreting Pulsar M82 X-2 | - |
dc.type | Article | - |
dc.identifier.email | Hu, CP: cphu@hku.hk | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1093/mnras/stw1558 | - |
dc.identifier.scopus | eid_2-s2.0-84988644204 | - |
dc.identifier.hkuros | 262651 | - |
dc.identifier.volume | 461 | - |
dc.identifier.issue | 4 | - |
dc.identifier.spage | 4395 | - |
dc.identifier.epage | 4399 | - |
dc.identifier.isi | WOS:000383514900081 | - |
dc.publisher.place | United Kingdom | - |
dc.identifier.issnl | 0035-8711 | - |