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XMM-Newton and INTEGRAL analysis of the supergiant fast X-ray transient IGR J17354-3255

XMM-Newton and INTEGRAL analysis of the supergiant fast X-ray transient IGR J17354-3255
XMM-Newton and INTEGRAL analysis of the supergiant fast X-ray transient IGR J17354-3255
We present the results of combined INTEGRALand XMM–Newton  observations of the supergiant fast X-ray transient (SFXT) IGR J17354−3255. Three XMM–Newton  observations of lengths 33.4, 32.5, and 21.9 ks were undertaken, the first an initial pointing to identify the correct source in the field of view and the latter two performed around periastron. Simultaneous INTEGRALobservations across ∼66percent of the orbital cycle were analysed but the source was neither detected by IBIS/ISGRI nor by JEM-X. The XMM–Newton light curves display a range of moderately bright X-ray activity but there are no particularly strong flares or outbursts in any of the three observations. We show that the spectral shape measured by XMM–Newton can be fitted by a consistent model throughout the observation, suggesting that the observed flux variations are driven by obscuration from a wind of varying density rather than changes in accretion mode. The simultaneous INTEGRALdata rule out simple extrapolation of the simple power-law model beyond the XMM–Newton energy range.
0035-8711
286-298
Goossens, M.E.
26dafd8c-a19b-4fb5-92a0-e986868884d2
Bird, A.J.
045ee141-4720-46fd-a412-5aa848a91b32
Hill, A.B.
b1007941-b5b1-47cd-8476-7c6b9c57f347
Sguera, V.
371bb568-7e56-496e-a624-dba6de79d9e1
Drave, S.P.
e34f14fb-0a86-439f-9a64-a69dfc733672
Goossens, M.E.
26dafd8c-a19b-4fb5-92a0-e986868884d2
Bird, A.J.
045ee141-4720-46fd-a412-5aa848a91b32
Hill, A.B.
b1007941-b5b1-47cd-8476-7c6b9c57f347
Sguera, V.
371bb568-7e56-496e-a624-dba6de79d9e1
Drave, S.P.
e34f14fb-0a86-439f-9a64-a69dfc733672

Goossens, M.E., Bird, A.J., Hill, A.B., Sguera, V. and Drave, S.P. (2019) XMM-Newton and INTEGRAL analysis of the supergiant fast X-ray transient IGR J17354-3255. Monthly Notices of the Royal Astronomical Society, 485 (1), 286-298. (doi:10.1093/mnras/sty3236).

Record type: Article

Abstract

We present the results of combined INTEGRALand XMM–Newton  observations of the supergiant fast X-ray transient (SFXT) IGR J17354−3255. Three XMM–Newton  observations of lengths 33.4, 32.5, and 21.9 ks were undertaken, the first an initial pointing to identify the correct source in the field of view and the latter two performed around periastron. Simultaneous INTEGRALobservations across ∼66percent of the orbital cycle were analysed but the source was neither detected by IBIS/ISGRI nor by JEM-X. The XMM–Newton light curves display a range of moderately bright X-ray activity but there are no particularly strong flares or outbursts in any of the three observations. We show that the spectral shape measured by XMM–Newton can be fitted by a consistent model throughout the observation, suggesting that the observed flux variations are driven by obscuration from a wind of varying density rather than changes in accretion mode. The simultaneous INTEGRALdata rule out simple extrapolation of the simple power-law model beyond the XMM–Newton energy range.

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XMM-Newton and INTEGRAL analysis of the Supergiant Fast X-ray Transient IGR J17354-3255 - Accepted Manuscript
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Accepted/In Press date: 20 November 2018
e-pub ahead of print date: 6 December 2018
Published date: May 2019

Identifiers

Local EPrints ID: 426733
URI: http://eprints.soton.ac.uk/id/eprint/426733
ISSN: 0035-8711
PURE UUID: 7747c253-a822-4b23-b0a4-6ed8fbb71836
ORCID for A.J. Bird: ORCID iD orcid.org/0000-0002-6888-8937
ORCID for A.B. Hill: ORCID iD orcid.org/0000-0003-3470-4834

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Date deposited: 11 Dec 2018 17:30
Last modified: 07 Oct 2020 01:49

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