IGR J17503-2636: a candidate supergiant fast X-ray transient

C. Ferrigno*, E. Bozzo, A. Sanna, G. K. Jaisawal, J. M. Girard, T. Di Salvo, L. Burderi

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

86 Downloads (Pure)

Abstract

The object IGR J17503–2636 is a hard X-ray transient discovered by INTEGRAL on 2018 August 11. This was the first ever reported X-ray emission from this source. Following the discovery, follow-up observations were carried out with Swift, Chandra, NICER, and NuSTAR. Here we report on the analysis of all of these X-ray data and the results obtained. Based on the fast variability in the X-ray domain, the spectral energy distribution in the 0.5–80 keV energy range, and the reported association with a highly reddened OB supergiant at ∼10 kpc, we conclude that IGR J17503–2636 is most likely a relatively faint new member of the supergiant fast X-ray transients. Spectral analysis of the NuSTAR data revealed a broad feature in addition to the typical power-law with exponential roll-over at high energy. This can be modeled either in emission or as a cyclotron scattering feature in absorption. If confirmed by future observations, this feature would indicate that IGR J17503–2636 hosts a strongly magnetized neutron star with B ∼ 2 × 1012 G.
Original languageEnglish
Article numberA142
JournalAstronomy and Astrophysics
Volume624
Number of pages6
ISSN0004-6361
DOIs
Publication statusPublished - 2019

Keywords

  • x-rays: binaries
  • X-rays: individuals: IGR J17503-2636

Cite this

Ferrigno, C., Bozzo, E., Sanna, A., Jaisawal, G. K., M. Girard, J., Di Salvo, T., & Burderi, L. (2019). IGR J17503-2636: a candidate supergiant fast X-ray transient. Astronomy and Astrophysics, 624, [A142]. https://doi.org/10.1051/0004-6361/201935185
Ferrigno, C. ; Bozzo, E. ; Sanna, A. ; Jaisawal, G. K. ; M. Girard, J. ; Di Salvo, T. ; Burderi, L. / IGR J17503-2636: a candidate supergiant fast X-ray transient. In: Astronomy and Astrophysics. 2019 ; Vol. 624.
@article{1b8e88f4fe9743f0a0eddf8ba8909728,
title = "IGR J17503-2636: a candidate supergiant fast X-ray transient",
abstract = "The object IGR J17503–2636 is a hard X-ray transient discovered by INTEGRAL on 2018 August 11. This was the first ever reported X-ray emission from this source. Following the discovery, follow-up observations were carried out with Swift, Chandra, NICER, and NuSTAR. Here we report on the analysis of all of these X-ray data and the results obtained. Based on the fast variability in the X-ray domain, the spectral energy distribution in the 0.5–80 keV energy range, and the reported association with a highly reddened OB supergiant at ∼10 kpc, we conclude that IGR J17503–2636 is most likely a relatively faint new member of the supergiant fast X-ray transients. Spectral analysis of the NuSTAR data revealed a broad feature in addition to the typical power-law with exponential roll-over at high energy. This can be modeled either in emission or as a cyclotron scattering feature in absorption. If confirmed by future observations, this feature would indicate that IGR J17503–2636 hosts a strongly magnetized neutron star with B ∼ 2 × 1012 G.",
keywords = "x-rays: binaries, X-rays: individuals: IGR J17503-2636",
author = "C. Ferrigno and E. Bozzo and A. Sanna and Jaisawal, {G. K.} and {M. Girard}, J. and {Di Salvo}, T. and L. Burderi",
year = "2019",
doi = "10.1051/0004-6361/201935185",
language = "English",
volume = "624",
journal = "Astronomy & Astrophysics",
issn = "0004-6361",
publisher = "E D P Sciences",

}

Ferrigno, C, Bozzo, E, Sanna, A, Jaisawal, GK, M. Girard, J, Di Salvo, T & Burderi, L 2019, 'IGR J17503-2636: a candidate supergiant fast X-ray transient', Astronomy and Astrophysics, vol. 624, A142. https://doi.org/10.1051/0004-6361/201935185

IGR J17503-2636: a candidate supergiant fast X-ray transient. / Ferrigno, C.; Bozzo, E.; Sanna, A.; Jaisawal, G. K.; M. Girard, J.; Di Salvo, T.; Burderi, L.

In: Astronomy and Astrophysics, Vol. 624, A142, 2019.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - IGR J17503-2636: a candidate supergiant fast X-ray transient

AU - Ferrigno, C.

AU - Bozzo, E.

AU - Sanna, A.

AU - Jaisawal, G. K.

AU - M. Girard, J.

AU - Di Salvo, T.

AU - Burderi, L.

PY - 2019

Y1 - 2019

N2 - The object IGR J17503–2636 is a hard X-ray transient discovered by INTEGRAL on 2018 August 11. This was the first ever reported X-ray emission from this source. Following the discovery, follow-up observations were carried out with Swift, Chandra, NICER, and NuSTAR. Here we report on the analysis of all of these X-ray data and the results obtained. Based on the fast variability in the X-ray domain, the spectral energy distribution in the 0.5–80 keV energy range, and the reported association with a highly reddened OB supergiant at ∼10 kpc, we conclude that IGR J17503–2636 is most likely a relatively faint new member of the supergiant fast X-ray transients. Spectral analysis of the NuSTAR data revealed a broad feature in addition to the typical power-law with exponential roll-over at high energy. This can be modeled either in emission or as a cyclotron scattering feature in absorption. If confirmed by future observations, this feature would indicate that IGR J17503–2636 hosts a strongly magnetized neutron star with B ∼ 2 × 1012 G.

AB - The object IGR J17503–2636 is a hard X-ray transient discovered by INTEGRAL on 2018 August 11. This was the first ever reported X-ray emission from this source. Following the discovery, follow-up observations were carried out with Swift, Chandra, NICER, and NuSTAR. Here we report on the analysis of all of these X-ray data and the results obtained. Based on the fast variability in the X-ray domain, the spectral energy distribution in the 0.5–80 keV energy range, and the reported association with a highly reddened OB supergiant at ∼10 kpc, we conclude that IGR J17503–2636 is most likely a relatively faint new member of the supergiant fast X-ray transients. Spectral analysis of the NuSTAR data revealed a broad feature in addition to the typical power-law with exponential roll-over at high energy. This can be modeled either in emission or as a cyclotron scattering feature in absorption. If confirmed by future observations, this feature would indicate that IGR J17503–2636 hosts a strongly magnetized neutron star with B ∼ 2 × 1012 G.

KW - x-rays: binaries

KW - X-rays: individuals: IGR J17503-2636

U2 - 10.1051/0004-6361/201935185

DO - 10.1051/0004-6361/201935185

M3 - Journal article

VL - 624

JO - Astronomy & Astrophysics

JF - Astronomy & Astrophysics

SN - 0004-6361

M1 - A142

ER -