INVESTIGATING the NATURE of IGR J17454-2919 USING X-RAY and NEAR-INFRARED OBSERVATIONS

A. Paizis; M. A. Nowak; J. Rodriguez; A. Segreto; S. Chaty; A. Rau; J. Chenevez; M. Del Santo; J. Greiner; S. Schmidl

doi:10.1088/0004-637X/808/1/34

INVESTIGATING the NATURE of IGR J17454-2919 USING X-RAY and NEAR-INFRARED OBSERVATIONS

A. Paizis
, M. A. Nowak
, J. Rodriguez
, A. Segreto
, S. Chaty
, A. Rau
, J. Chenevez
, M. Del Santo
, J. Greiner
, S. Schmidl

INAF Istituto di Astrofisica Spaziale e Fisica Cosmica, Milan
Massachusetts Institute of Technology
Université Paris-Diderot
INAF Istituto di Astrofisica Spaziale e Fisica Cosmica di Palermo
Institut Universitaire de France
Max Planck Institut für Extraterrestrische Physik
Technical University of Denmark
Thüringer Landessternwarte Tautenburg

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

5 Citations (Scopus)

Résumé

IGR J17454-2919 is a hard X-ray transient discovered by INTEGRAL on 2014 September 27. We report on our 20 ks Chandra observation of the source, performed about five weeks after the discovery, as well as on INTEGRAL and Swift long-term monitoring observations. X-ray broad-band spectra of the source are compatible with an absorbed power law, 1.6-1.8, (10-12) , with no trace of a cut-off in the data up to about 100 keV, and with an average absorbed 0.5-100 keV flux of about (7.1-9.7) . With Chandra, we determine the most accurate X-ray position of IGR J17454-2919, = 17^h45^m27.69, = -29° (90% uncertainty of ), consistent with the NIR source 2MASS J17452768-2919534. We also include NIR investigations from our observations of the source field on 2014 October 6 with GROND. With the multi-wavelength information at hand, we discuss the possible nature of IGR J17454-2919.

langue originale	Anglais
Numéro d'article	34
journal	Astrophysical Journal
Volume	808
Numéro de publication	1
Les DOIs	https://doi.org/10.1088/0004-637X/808/1/34
état	Publié - 20 juil. 2015
Modification externe	Oui

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10.1088/0004-637X/808/1/34

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@article{2a8d5532d00e451bba0b2e1f0ae12a2b,

title = "INVESTIGATING the NATURE of IGR J17454-2919 USING X-RAY and NEAR-INFRARED OBSERVATIONS",

abstract = "IGR J17454-2919 is a hard X-ray transient discovered by INTEGRAL on 2014 September 27. We report on our 20 ks Chandra observation of the source, performed about five weeks after the discovery, as well as on INTEGRAL and Swift long-term monitoring observations. X-ray broad-band spectra of the source are compatible with an absorbed power law, 1.6-1.8, (10-12) , with no trace of a cut-off in the data up to about 100 keV, and with an average absorbed 0.5-100 keV flux of about (7.1-9.7) . With Chandra, we determine the most accurate X-ray position of IGR J17454-2919, = 17h45m27.69, = -29° (90\% uncertainty of ), consistent with the NIR source 2MASS J17452768-2919534. We also include NIR investigations from our observations of the source field on 2014 October 6 with GROND. With the multi-wavelength information at hand, we discuss the possible nature of IGR J17454-2919.",

keywords = "X-rays: binaries, accretion, accretion disks, binaries: close, stars: individual (IGR J174542919)",

author = "A. Paizis and Nowak, \{M. A.\} and J. Rodriguez and A. Segreto and S. Chaty and A. Rau and J. Chenevez and Santo, \{M. Del\} and J. Greiner and S. Schmidl",

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doi = "10.1088/0004-637X/808/1/34",

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journal = "Astrophysical Journal",

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T1 - INVESTIGATING the NATURE of IGR J17454-2919 USING X-RAY and NEAR-INFRARED OBSERVATIONS

AU - Paizis, A.

AU - Nowak, M. A.

AU - Rodriguez, J.

AU - Segreto, A.

AU - Chaty, S.

AU - Rau, A.

AU - Chenevez, J.

AU - Santo, M. Del

AU - Greiner, J.

AU - Schmidl, S.

PY - 2015/7/20

Y1 - 2015/7/20

N2 - IGR J17454-2919 is a hard X-ray transient discovered by INTEGRAL on 2014 September 27. We report on our 20 ks Chandra observation of the source, performed about five weeks after the discovery, as well as on INTEGRAL and Swift long-term monitoring observations. X-ray broad-band spectra of the source are compatible with an absorbed power law, 1.6-1.8, (10-12) , with no trace of a cut-off in the data up to about 100 keV, and with an average absorbed 0.5-100 keV flux of about (7.1-9.7) . With Chandra, we determine the most accurate X-ray position of IGR J17454-2919, = 17h45m27.69, = -29° (90% uncertainty of ), consistent with the NIR source 2MASS J17452768-2919534. We also include NIR investigations from our observations of the source field on 2014 October 6 with GROND. With the multi-wavelength information at hand, we discuss the possible nature of IGR J17454-2919.

AB - IGR J17454-2919 is a hard X-ray transient discovered by INTEGRAL on 2014 September 27. We report on our 20 ks Chandra observation of the source, performed about five weeks after the discovery, as well as on INTEGRAL and Swift long-term monitoring observations. X-ray broad-band spectra of the source are compatible with an absorbed power law, 1.6-1.8, (10-12) , with no trace of a cut-off in the data up to about 100 keV, and with an average absorbed 0.5-100 keV flux of about (7.1-9.7) . With Chandra, we determine the most accurate X-ray position of IGR J17454-2919, = 17h45m27.69, = -29° (90% uncertainty of ), consistent with the NIR source 2MASS J17452768-2919534. We also include NIR investigations from our observations of the source field on 2014 October 6 with GROND. With the multi-wavelength information at hand, we discuss the possible nature of IGR J17454-2919.

KW - X-rays: binaries

KW - accretion, accretion disks

KW - binaries: close

KW - stars: individual (IGR J174542919)

U2 - 10.1088/0004-637X/808/1/34

DO - 10.1088/0004-637X/808/1/34

M3 - Article

AN - SCOPUS:84940107344

SN - 0004-637X

VL - 808

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

M1 - 34

ER -

INVESTIGATING the NATURE of IGR J17454-2919 USING X-RAY and NEAR-INFRARED OBSERVATIONS

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