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IGR J17451-3022: A dipping and eclipsing low mass X-ray binary

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https://ir.library.oregonstate.edu/concern/articles/pk02cc32k

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  • In this paper we report on the available X-ray data collected by INTEGRAL, Swift, and XMM-Newton during the first outburst of the INTEGRAL transient IGR J17451–3022, discovered in 2014 August. The monitoring observations provided by the JEM-X instruments on board INTEGRAL and the Swift /XRT showed that the event lasted for about 9 months and that the emission of the source remained soft for the entire period. The source emission is dominated by a thermal component (kT ~ 1.2 keV), most likely produced by an accretion disk. The XMM-Newton observation carried out during the outburst revealed the presence of multiple absorption features in the soft X-ray emission that could be associated with the presence of an ionized absorber lying above the accretion disk, as observed in many high inclination, low mass X-ray binaries. The XMM-Newton data also revealed the presence of partial and rectangular X-ray eclipses (lasting about 820 s) together with dips. The rectangular eclipses can be associated with increases in the overall absorption column density in the direction of the source. The detection of two consecutive X-ray eclipses in the XMM-Newton data allowed us to estimate the source orbital period at P[subscript]orb = 22620.5⁺²·⁰₋₁.₈ s (1σ confidence level).
  • This is the publisher’s final pdf. The published by EDP Sciences and copyrighted by European Southern Observatory. It can be found at: http://www.aanda.org/articles/aa/abs/2016/05/aa27501-15/aa27501-15.html
  • Keywords: X-rays: binaries, X-rays: individuals: IGR J17451-3022
  • Keywords: X-rays: binaries, X-rays: individuals: IGR J17451-3022
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  • Bozzo, E., Pjanka, P., Romano, P., Papitto, A., Ferrigno, C., Motta, S., ... & Pavan, L. (2016). IGR J17451–3022: A dipping and eclipsing low mass X-ray binary. Astronomy & Astrophysics, 589, A42. doi:10.1051/0004-6361/201527501
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  • 589
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  • A.A.Z. and P.P. have been supported in part by the Polish NCN grants 2012/04/M/ST9/00780 and 2013/10/M/ST9/00729. A.P. is supported by a Juan de la Cierva fellowship, and acknowledges grants AYA 2012-39303, SGR2009-811, and iLINK2011-0303. P.R. acknowledges contract ASI-INAF I/004/11/0. G.P. acknowledges support by the Bundesministerium für Wirtschaft und Technologie/Deutsches Zentrum für Luft- und Raumfahrt (BMWI/DLR, FKZ 50 OR 1408) and the Max Planck Society. L.B. e T.D. acknowledge contract ASI-INAF.
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