Quasi-periodic dipping in the ultraluminous X-ray source, NGC 247 ULX-1

被引:16
作者
Alston, W. N. [1 ]
Pinto, C. [2 ]
Barret, D. [3 ]
D'Ai, A. [2 ]
Del Santo, M. [2 ]
Earnshaw, H. [4 ]
Fabian, A. C. [5 ]
Fuerst, F. [1 ]
Kara, E. [6 ]
Kosec, P. [6 ]
Middleton, M. J. [7 ]
Parker, M. L. [5 ]
Pintore, F. [8 ]
Robba, A. [2 ,9 ]
Roberts, T. P. [10 ]
Sathyaprakash, R. [11 ]
Walton, D. [5 ]
Ambrosi, E. [2 ]
机构
[1] European Space Astron Ctr ESAC, European Space Agcy ESA, E-28691 Madrid, Spain
[2] INAF IASF Palermo, Via Ugo La Malfa 153, I-90146 Palermo, Italy
[3] Inst Rech Astrophys & Planetol IRAP, 9 Ave Colonel Roche,BP 44346, F-31028 Toulouse 4, France
[4] CALTECH, Cahill Ctr Astron & Astrophys, Pasadena, CA 91125 USA
[5] Inst Astron, Madingley Rd, Cambridge CB3 0HA, England
[6] MIT, Kavli Inst Astrophys & Space Res, 77 Massachusetts Ave, Cambridge, MA 02139 USA
[7] Univ Southampton, Dept Phys & Astron, Southampton SO17 1BJ, Hants, England
[8] INAF IASF Milano, Via A Corti 12, I-20133 Milan, Italy
[9] Univ Palermo, Dipartimento Fis & Chim, Via Archirafi 36, I-90123 Palermo, Italy
[10] Univ Durham, Ctr Extragalact Astron, Dept Phys, South Rd, Durham DH1 3LE, England
[11] Inst Ciencies Espai, Barcelona 08193, Spain
基金
英国科学技术设施理事会;
关键词
accretion; accretion discs; X-rays: binaries; X-rays: individual: NGC 247 ULX-1; BLACK-HOLE; HARD STATE; LIGHT CURVES; 5408; X-1; VARIABILITY; DISCOVERY; ACCRETION; PULSAR; DISC; DIPS;
D O I
10.1093/mnras/stab1473
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Most ultraluminous X-ray sources (ULXs) are believed to be stellar mass black holes or neutron stars accreting beyond the Eddington limit. Determining the nature of the compact object and the accretion mode from broad-band spectroscopy is currently a challenge, but the observed timing properties provide insight into the compact object and details of the geometry and accretion processes. Here, we report a timing analysis for an 800 ks XMM-Newton campaign on the supersoft ultraluminous X-ray source, NGC 247 ULX-1. Deep and frequent dips occur in the X-ray light curve, with the amplitude increasing with increasing energy band. Power spectra and coherence analysis reveals the dipping preferentially occurs on similar to 5 and similar to 10 ks time-scales. The dips can be caused by either the occultation of the central X-ray source by an optically thick structure, such as warping of the accretion disc, or from obscuration by a wind launched from the accretion disc, or both. This behaviour supports the idea that supersoft ULXs are viewed close to edge-on to the accretion disc.
引用
收藏
页码:3722 / 3729
页数:8
相关论文
共 50 条
  • [41] XMM-Newton campaign on ultraluminous X-ray source NGC 1313 X-1: wind versus state variability
    Pinto, C.
    Walton, D. J.
    Kara, E.
    Parker, M. L.
    Soria, R.
    Kosec, P.
    Middleton, M. J.
    Alston, W. N.
    Fabian, A. C.
    Guainazzi, M.
    Roberts, T. P.
    Fuerst, F.
    Earnshaw, H. P.
    Sathyaprakash, R.
    Barret, D.
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2020, 492 (04) : 4646 - 4665
  • [42] Comparing spectral models for ultraluminous X-ray sources with NGC 4517 ULX1
    Walton, D. J.
    Gladstone, J. C.
    Roberts, T. P.
    Fabian, A. C.
    Caballero-Garcia, M. D.
    Done, C.
    Middleton, M. J.
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2011, 414 (02) : 1011 - 1022
  • [43] The ultraluminous X-ray source NGC 5643 ULX1: a large stellar mass black hole accreting at super-Eddington rates?
    Pintore, Fabio
    Zampieri, Luca
    Sutton, Andrew D.
    Roberts, Timothy P.
    Middleton, Matthew J.
    Gladstone, Jeanette C.
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2016, 459 (01) : 455 - 466
  • [44] Broadband X-ray spectral study of ultraluminous X-ray source M81 X-6
    Jithesh, V
    Anjana, C.
    Misra, Ranjeev
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2020, 494 (03) : 4026 - 4030
  • [45] Investigating the nature of the ultraluminous X-ray sources in the galaxy NGC 925
    Salvaggio, Chiara
    Wolter, A.
    Pintore, F.
    Pinto, C.
    Ambrosi, E.
    Israel, G. L.
    Marino, A.
    Salvaterra, R.
    Zampieri, L.
    Belfiore, A.
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2022, 512 (02) : 1814 - 1828
  • [46] Optical counterparts of an ultraluminous X-Ray Source X-1 in NGC 2500
    Aksaker, N.
    Akyuz, A.
    Avdan, S.
    Avdan, H.
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2019, 488 (04) : 5935 - 5940
  • [47] The X-ray binary analogy to the first AGN quasi-periodic oscillation
    Middleton, Matthew
    Done, Chris
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2010, 403 (01) : 9 - 16
  • [48] Identification of a new ultraluminous X-ray source in NGC 1316
    Allak, S.
    Akyuz, A.
    Aksaker, N.
    Ela, M. Ozdogan
    Avdan, S.
    Soydugan, F.
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2020, 499 (04) : 5682 - 5689
  • [49] A Potential Cyclotron Resonant Scattering Feature in the Ultraluminous X-Ray Source Pulsar NGC 300 ULX1 Seen by NuSTAR and XMM-Newton
    Walton, D. J.
    Bachetti, M.
    Furst, F.
    Barret, D.
    Brightman, M.
    Fabian, A. C.
    Grefenstette, B. W.
    Harrison, F. A.
    Heida, M.
    Kennea, J.
    Kosec, P.
    Lau, R. M.
    Madsen, K. K.
    Middleton, M. J.
    Pinto, C.
    Steiner, J. F.
    Webb, N.
    ASTROPHYSICAL JOURNAL LETTERS, 2018, 857 (01)
  • [50] Super-Eddington accretion on to a stellar mass ultraluminous X-ray source NGC 4190 ULX1 (vol 504, pg 974, 2021)
    Ghosh, T.
    Rana, V
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2023, 522 (01) : 1183 - 1183