IGR J17448-3232 point source: A blazar candidate viewed through the galactic centre?

Peter A. Curran; S. Chaty; J. A.Zurita Heras; J. A. Tomsick; T. J. Maccarone

IGR J17448-3232 point source: A blazar candidate viewed through the galactic centre?

Peter A. Curran
, S. Chaty
, J. A.Zurita Heras
, J. A. Tomsick
, T. J. Maccarone

Université Paris-Diderot
François Arago Centre
Sorbonne Univ.
University of California, Space Sciences Laboratory
School of Physics and Astronomy
University of Southampton

Research output: Contribution to journal › Conference article › peer-review

Abstract

The error region of the INTEGRAL source, IGRJ17448-3232, contains an X-ray point source at the edge of a ∼ 3′ radius extended X-ray source. It has been suggested that the extended emission is a young supernovae remnant (SNR) while the point source may be an isolated neutron star, associated with the SNR, that received a kick when the supernova occurred. We identify the infrared counterpart of the X-ray point source, visible from 2.2 μm to 24 μm, and place limits on the flux at longer wavelengths by comparison with radio catalogues. Multi-wavelength spectral modeling shows that the data are consistent with a reddened and absorbed single power law over five orders of magnitude in frequency. This implies non-thermal, possibly synchrotron emission that renders the previous identification of this source as a possible pulsar, and its association to the SNR, unlikely; we instead propose that the emission may be due to a blazar viewed through the plane of the Galaxy.

Original language	English
Journal	Proceedings of Science
Publication status	Published - 1 Dec 2011
Externally published	Yes
Event	INTEGRAL - A Science Workshop in Sardinia: The Extreme and Variable High Energy Sky, Extremesky 2011 - Cagliari, Italy Duration: 19 Sept 2011 → 23 Sept 2011

Cite this

@article{e2dba7e80d964c45afdc74be59f91d70,

title = "IGR J17448-3232 point source: A blazar candidate viewed through the galactic centre?",

abstract = "The error region of the INTEGRAL source, IGRJ17448-3232, contains an X-ray point source at the edge of a ∼ 3′ radius extended X-ray source. It has been suggested that the extended emission is a young supernovae remnant (SNR) while the point source may be an isolated neutron star, associated with the SNR, that received a kick when the supernova occurred. We identify the infrared counterpart of the X-ray point source, visible from 2.2 μm to 24 μm, and place limits on the flux at longer wavelengths by comparison with radio catalogues. Multi-wavelength spectral modeling shows that the data are consistent with a reddened and absorbed single power law over five orders of magnitude in frequency. This implies non-thermal, possibly synchrotron emission that renders the previous identification of this source as a possible pulsar, and its association to the SNR, unlikely; we instead propose that the emission may be due to a blazar viewed through the plane of the Galaxy.",

author = "Curran, \{Peter A.\} and S. Chaty and Heras, \{J. A.Zurita\} and Tomsick, \{J. A.\} and Maccarone, \{T. J.\}",

year = "2011",

month = dec,

day = "1",

language = "English",

journal = "Proceedings of Science",

issn = "1824-8039",

publisher = "Sissa Medialab Srl",

note = "INTEGRAL - A Science Workshop in Sardinia: The Extreme and Variable High Energy Sky, Extremesky 2011 ; Conference date: 19-09-2011 Through 23-09-2011",

}

TY - JOUR

T1 - IGR J17448-3232 point source

T2 - INTEGRAL - A Science Workshop in Sardinia: The Extreme and Variable High Energy Sky, Extremesky 2011

AU - Curran, Peter A.

AU - Chaty, S.

AU - Heras, J. A.Zurita

AU - Tomsick, J. A.

AU - Maccarone, T. J.

PY - 2011/12/1

Y1 - 2011/12/1

N2 - The error region of the INTEGRAL source, IGRJ17448-3232, contains an X-ray point source at the edge of a ∼ 3′ radius extended X-ray source. It has been suggested that the extended emission is a young supernovae remnant (SNR) while the point source may be an isolated neutron star, associated with the SNR, that received a kick when the supernova occurred. We identify the infrared counterpart of the X-ray point source, visible from 2.2 μm to 24 μm, and place limits on the flux at longer wavelengths by comparison with radio catalogues. Multi-wavelength spectral modeling shows that the data are consistent with a reddened and absorbed single power law over five orders of magnitude in frequency. This implies non-thermal, possibly synchrotron emission that renders the previous identification of this source as a possible pulsar, and its association to the SNR, unlikely; we instead propose that the emission may be due to a blazar viewed through the plane of the Galaxy.

AB - The error region of the INTEGRAL source, IGRJ17448-3232, contains an X-ray point source at the edge of a ∼ 3′ radius extended X-ray source. It has been suggested that the extended emission is a young supernovae remnant (SNR) while the point source may be an isolated neutron star, associated with the SNR, that received a kick when the supernova occurred. We identify the infrared counterpart of the X-ray point source, visible from 2.2 μm to 24 μm, and place limits on the flux at longer wavelengths by comparison with radio catalogues. Multi-wavelength spectral modeling shows that the data are consistent with a reddened and absorbed single power law over five orders of magnitude in frequency. This implies non-thermal, possibly synchrotron emission that renders the previous identification of this source as a possible pulsar, and its association to the SNR, unlikely; we instead propose that the emission may be due to a blazar viewed through the plane of the Galaxy.

M3 - Conference article

AN - SCOPUS:84890581693

SN - 1824-8039

JO - Proceedings of Science

JF - Proceedings of Science

Y2 - 19 September 2011 through 23 September 2011

ER -

IGR J17448-3232 point source: A blazar candidate viewed through the galactic centre?

Abstract

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