Quiescent X‐ray variability from the neutron star transient Aql X‐1
dc.contributor.author | Cackett, E. M. | en_US |
dc.contributor.author | Fridriksson, J. K. | en_US |
dc.contributor.author | Homan, Jeroen | en_US |
dc.contributor.author | Miller, J. M. | en_US |
dc.contributor.author | Wijnands, Rudy | en_US |
dc.date.accessioned | 2011-11-10T15:37:48Z | |
dc.date.available | 2012-09-04T15:27:49Z | en_US |
dc.date.issued | 2011-07-11 | en_US |
dc.identifier.citation | Cackett, E. M.; Fridriksson, J. K.; Homan, J.; Miller, J. M.; Wijnands, R. (2011). "Quiescent X‐ray variability from the neutron star transient Aql X‐1." Monthly Notices of the Royal Astronomical Society 414(4). <http://hdl.handle.net/2027.42/87080> | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.issn | 1365-2966 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/87080 | |
dc.description.abstract | A number of studies have revealed variability from neutron star low‐mass X‐ray binaries during quiescence. Such variability is not well characterized, or understood, but may be a common property that has been missed due to lack of multiple observations. One such source where variability has been observed is Aql X‐1. Here, we analyse 14 Chandra and XMM–Newton observations of Aql X‐1 in quiescence, covering a period of approximately 2 yr. There is clear variability between the epochs, with the most striking feature being a flare‐like increase in the flux by a factor of 5. Spectral fitting is inconclusive as to whether the power‐law and/or thermal component is variable. We suggest that the variability and flare‐like behaviour during quiescence is due to accretion at low rates which might reach the neutron star surface. | en_US |
dc.publisher | Blackwell Publishing Ltd | en_US |
dc.publisher | Wiley Periodicals, Inc. | en_US |
dc.subject.other | Accretion, Accretion Discs | en_US |
dc.subject.other | Stars: Individual: Aql X‐1 | en_US |
dc.subject.other | Stars: Neutron | en_US |
dc.subject.other | X‐Rays: Binaries | en_US |
dc.title | Quiescent X‐ray variability from the neutron star transient Aql X‐1 | en_US |
dc.type | Article | en_US |
dc.rights.robots | IndexNoFollow | en_US |
dc.subject.hlbsecondlevel | Astronomy | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Department of Astronomy, University of Michigan, 500 Church Street, Ann Arbor, MI 48109‐1042, USA | en_US |
dc.contributor.affiliationother | Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA | en_US |
dc.contributor.affiliationother | MIT Kavli Institute for Astrophysics and Space Research, 70 Vassar Street, Cambridge, MA 02139, USA | en_US |
dc.contributor.affiliationother | Astronomical Institute ‘Anton Pannekoek’, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, the Netherlands | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/87080/1/j.1365-2966.2011.18601.x.pdf | |
dc.identifier.doi | 10.1111/j.1365-2966.2011.18601.x | en_US |
dc.identifier.source | Monthly Notices of the Royal Astronomical Society | en_US |
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