View Item 

Show simple item record

Quiescent X‐ray variability from the neutron star transient Aql X‐1

dc.contributor.authorCackett, E. M.en_US
dc.contributor.authorFridriksson, J. K.en_US
dc.contributor.authorHoman, Jeroenen_US
dc.contributor.authorMiller, J. M.en_US
dc.contributor.authorWijnands, Rudyen_US
dc.date.accessioned2011-11-10T15:37:48Z
dc.date.available2012-09-04T15:27:49Zen_US
dc.date.issued2011-07-11en_US
dc.identifier.citationCackett, 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.issn0035-8711en_US
dc.identifier.issn1365-2966en_US
dc.identifier.urihttps://hdl.handle.net/2027.42/87080
dc.description.abstractA 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.publisherBlackwell Publishing Ltden_US
dc.publisherWiley Periodicals, Inc.en_US
dc.subject.otherAccretion, Accretion Discsen_US
dc.subject.otherStars: Individual: Aql X‐1en_US
dc.subject.otherStars: Neutronen_US
dc.subject.otherX‐Rays: Binariesen_US
dc.titleQuiescent X‐ray variability from the neutron star transient Aql X‐1en_US
dc.typeArticleen_US
dc.rights.robotsIndexNoFollowen_US
dc.subject.hlbsecondlevelAstronomyen_US
dc.subject.hlbtoplevelScienceen_US
dc.description.peerreviewedPeer Revieweden_US
dc.contributor.affiliationumDepartment of Astronomy, University of Michigan, 500 Church Street, Ann Arbor, MI 48109‐1042, USAen_US
dc.contributor.affiliationotherInstitute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HAen_US
dc.contributor.affiliationotherMIT Kavli Institute for Astrophysics and Space Research, 70 Vassar Street, Cambridge, MA 02139, USAen_US
dc.contributor.affiliationotherAstronomical Institute ‘Anton Pannekoek’, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, the Netherlandsen_US
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/87080/1/j.1365-2966.2011.18601.x.pdf
dc.identifier.doi10.1111/j.1365-2966.2011.18601.xen_US
dc.identifier.sourceMonthly Notices of the Royal Astronomical Societyen_US
dc.identifier.citedreferenceArnaud K. A., 1996, in Jacoby G. H., Barnes J., eds, ASP Conf. Ser. Vol. 101, Astronomical Data Analysis Software and Systems V XSPEC: The First Ten Years. Astron. Soc. Pac., San Francisco, p. 17en_US
dc.identifier.citedreferenceBaganoff F. K. et al., 2001, Nat, 413, 45en_US
dc.identifier.citedreferenceBildsten L., Rutledge R. E., 2000, ApJ, 541, 908en_US
dc.identifier.citedreferenceBradley C. K., Hynes R. I., Kong A. K. H., Haswell C. A., Casares J., Gallo E., 2007, ApJ, 667, 427en_US
dc.identifier.citedreferenceBrown E. F., Bildsten L., Rutledge R. E., 1998, ApJ, 504, L95en_US
dc.identifier.citedreferenceCackett E. M. et al., 2005, ApJ, 620, 922en_US
dc.identifier.citedreferenceCackett E. M., Wijnands R., Linares M., Miller J. M., Homan J., Lewin W. H. G., 2006, MNRAS, 372, 479en_US
dc.identifier.citedreferenceCackett E. M., Brown E. F., Miller J. M., Wijnands R., 2010, ApJ, 720, 1325en_US
dc.identifier.citedreferenceCallanan P. J. et al., 1995, ApJ, 441, 786en_US
dc.identifier.citedreferenceCampana S., Stella L., 2003, ApJ, 597, 474en_US
dc.identifier.citedreferenceCampana S., Mereghetti S., Stella L., Colpi M., 1997, A&A, 324, 941en_US
dc.identifier.citedreferenceCampana S., Colpi M., Mereghetti S., Stella L., Tavani M., 1998, A&AR, 8, 279en_US
dc.identifier.citedreferenceCampana S., Israel G. L., Stella L., Gastaldello F., Mereghetti S., 2004, ApJ, 601, 474en_US
dc.identifier.citedreferenceDegenaar N., Wijnands R., 2009, A&A, 495, 547en_US
dc.identifier.citedreferenceDegenaar N., Wijnands R., 2010, A&A, 524, A69en_US
dc.identifier.citedreferenceDegenaar N. et al., 2011, MNRAS, (doi: 10.1111/j.1365‐2966.2010.17562.x ) in press (arXiv:1007.0247)en_US
dc.identifier.citedreferenceDubus G., Hameury J., Lasota J., 2001, A&A, 373, 251en_US
dc.identifier.citedreferenceFridriksson J. K. et al., 2010, ApJ, 714, 270en_US
dc.identifier.citedreferenceFridriksson J. K. et al., 2011, ApJ, preprint (arXiv:1101.0081)en_US
dc.identifier.citedreferenceGarcia M. R. et al., 2010, ApJ, 710, 755en_US
dc.identifier.citedreferenceGenzel R., Schödel R., Ott T., Eckart A., Alexander T., Lacombe F., Rouan D., Aschenbach B., 2003, Nat, 425, 934en_US
dc.identifier.citedreferenceHameury J., Menou K., Dubus G., Lasota J., Hure J., 1998, MNRAS, 298, 1048en_US
dc.identifier.citedreferenceHartman J. M., Galloway D. K., Chakrabarty D., 2011, ApJ, 726, 26en_US
dc.identifier.citedreferenceHeinke C. O., Rybicki G. B., Narayan R., Grindlay J. E., 2006, ApJ, 644, 1090en_US
dc.identifier.citedreferenceHynes R. I. et al., 2004, ApJ, 611, L125en_US
dc.identifier.citedreferenceKing A. R., Ritter H., 1998, MNRAS, 293, L42en_US
dc.identifier.citedreferenceKong A. K. H., Kuulkers E., Charles P. A., Homer L., 2000, MNRAS, 312, L49en_US
dc.identifier.citedreferenceKong A. K. H., McClintock J. E., Garcia M. R., Murray S. S., Barret D., 2002, ApJ, 570, 277en_US
dc.identifier.citedreferenceKuulkers E., in’t Zand J. J. M., Lasota J., 2009, A&A, 503, 889en_US
dc.identifier.citedreferenceLasota J., 2001, New Astron. Rev., 45, 449en_US
dc.identifier.citedreferenceLevine A. M., Bradt H., Cui W., Jernigan J. G., Morgan E. H., Remillard R., Shirey R. E., Smith D. A., 1996, ApJ, 469, L33en_US
dc.identifier.citedreferenceLi Z., Garcia M. R., Forman W. R., Jones C., Kraft R. P., Lal D. V., Murray S. S., Wang Q. D., 2011, ApJ, 728, L10en_US
dc.identifier.citedreferenceMaitra D., Markoff S., Falcke H., 2009, A&A, 508, L13en_US
dc.identifier.citedreferenceMenou K., McClintock J. E., 2001, ApJ, 557, 304en_US
dc.identifier.citedreferenceMenou K., Hameury J., Lasota J., Narayan R., 2000, MNRAS, 314, 498en_US
dc.identifier.citedreferenceMiller‐Jones J. C. A., Gallo E., Rupen M. P., Mioduszewski A. J., Brisken W., Fender R. P., Jonker P. G., Maccarone T. J., 2008, MNRAS, 388, 1751en_US
dc.identifier.citedreferenceMuno M. P., Pfahl E., Baganoff F. K., Brandt W. N., Ghez A., Lu J., Morris M. R., 2005, ApJ, 622, L113en_US
dc.identifier.citedreferenceMuno M. P., Wijnands R., Wang Q. D., Park S., Brandt W. N., Bauer F. E., Wang Z., 2007, Astron. Telegram, 1013en_US
dc.identifier.citedreferencePapitto A., Riggio A., Burderi L., Di Salvo T., D’Aí A., Iaria R., 2011, A&A, 528, A55en_US
dc.identifier.citedreferenceParmar A. N., Williams O. R., Kuulkers E., Angelini L., White N. E., 1997, A&A, 319, 855en_US
dc.identifier.citedreferencePatruno A., 2010, ApJ, 722, 909en_US
dc.identifier.citedreferencePorquet D., Predehl P., Aschenbach B., Grosso N., Goldwurm A., Goldoni P., Warwick R. S., Decourchelle A., 2003, A&A, 407, L17en_US
dc.identifier.citedreferencePorquet D. et al., 2008, A&A, 488, 549en_US
dc.identifier.citedreferenceRutledge R. E., Bildsten L., Brown E. F., Pavlov G. G., Zavlin V. E., 1999, ApJ, 514, 945en_US
dc.identifier.citedreferenceRutledge R. E., Bildsten L., Brown E. F., Pavlov G. G., Zavlin V. E., 2000, ApJ, 529, 985en_US
dc.identifier.citedreferenceRutledge R. E., Bildsten L., Brown E. F., Pavlov G. G., Zavlin V. E., 2001a, ApJ, 551, 921en_US
dc.identifier.citedreferenceRutledge R. E., Bildsten L., Brown E. F., Pavlov G. G., Zavlin V. E., 2001b, ApJ, 559, 1054en_US
dc.identifier.citedreferenceRutledge R. E., Bildsten L., Brown E. F., Pavlov G. G., Zavlin V. E., 2002a, ApJ, 577, 346en_US
dc.identifier.citedreferenceRutledge R. E., Bildsten L., Brown E. F., Pavlov G. G., Zavlin V. E., Ushomirsky G., 2002b, ApJ, 580, 413en_US
dc.identifier.citedreferenceSakano M., Warwick R. S., Decourchelle A., Wang Q. D., 2005, MNRAS, 357, 1211en_US
dc.identifier.citedreferenceShahbaz T., Dhillon V. S., Marsh T. R., Casares J., Zurita C., Charles P. A., 2010, MNRAS, 403, 2167en_US
dc.identifier.citedreferenceTsujimoto M. et al., 2011, A&A, 525, A25en_US
dc.identifier.citedreferenceUshomirsky G., Rutledge R. E., 2001, MNRAS, 325, 1157en_US
dc.identifier.citedreferenceWagner R. M., Starrfield S. G., Hjellming R. M., Howell S. B., Kreidl T. J., 1994, ApJ, 429, L25en_US
dc.identifier.citedreferenceWijnands R. et al., 2006, A&A, 449, 1117en_US
dc.identifier.citedreferenceYuan F., Quataert E., Narayan R., 2004, ApJ, 606, 894en_US
dc.identifier.citedreferenceZampieri L., Turolla R., Zane S., Treves A., 1995, ApJ, 439, 849en_US
dc.identifier.citedreferenceZhao J., Young K. H., Herrnstein R. M., Ho P. T. P., Tsutsumi T., Lo K. Y., Goss W. M., Bower G. C., 2003, ApJ, 586, L29en_US
dc.owningcollnameInterdisciplinary and Peer-Reviewed


Files in this item

Name:
j.1365-2966.2011.18601.x.pdf
Size:
662.7KB
Format:
PDF
View/Open

Show simple item record

Remediation of Harmful Language

The University of Michigan Library aims to describe library materials in a way that respects the people and communities who create, use, and are represented in our collections. Report harmful or offensive language in catalog records, finding aids, or elsewhere in our collections anonymously through our metadata feedback form. More information at Remediation of Harmful Language.

Accessibility

If you are unable to use this file in its current format, please select the Contact Us link and we can modify it to make it more accessible to you.