Broadband INTEGRAL analysis of IGR J17497-2821

E. Kuulkers; J. Chenevez; S. Shaw; D. Brandt; T. Courvoisier; A. D Garau; K. Ebisawa; P. Kretschmar; C. Markwardt; N. Mowlavï; T. Oosterbroek; A. Paizis; D. R. Oneca; C. Sanchez-Fernandez; R. Wijnands

Broadband INTEGRAL analysis of IGR J17497-2821

E. Kuulkers^*, J. Chenevez, S. Shaw, D. Brandt, T. Courvoisier, A. D Garau, K. Ebisawa, P. Kretschmar, C. Markwardt, N. Mowlavï, T. Oosterbroek, A. Paizis, D. R. Oneca, C. Sanchez-Fernandez, R. Wijnands

^*Corresponding author for this work

Research output: Other contribution › Net publication - Internet publication › Research

Abstract

We further analysed the INTEGRAL JEM-X observations performed on UT 2006, Sep 18, 08:30-12:12 (ATel #886) of the new hard INTEGRAL source IGR J17497-2821 (ATel #885). We find average fluxes of 31 +/- 10 mCrab and 47 +/- 12 mCrab in the 3-10 keV and 10-25 keV bands, respectively. The best-fit JEM-X position is RA = 267.405 deg, Dec = -28.356 deg (J2000.0), with a 90% confidence error of 1', consistent with that reported in ATels #885 and #886.

A joint JEM-X and IBIS/ISGRI spectral analysis shows the 3-200 keV source spectrum to be well described by a single power-law with index 1.93 +/- 0.05. The 90% confidence upper limit on the absorption column, N_H, is about 6x10^22 atoms/cm^2, consistent with the average interstellar absorption in the direction of the source. At an assumed distance of 8 kpc the 2-10 keV and 2-100 keV (unabsorbed) source luminosities are about 5x10^36 erg/s and 10^37 erg/s, respectively.

Our observations show IGR J17497-2821 to be in a low, hard, state, typically seen in black-hole candidate and neutron-star X-ray transients

Original language	English
Publication date	20 Sept 2006
Publication status	Published - 20 Sept 2006

Series	The Astronomer's telegram
Number	ATel #888

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JEM-X: The JEM-X X-ray monitor on INTEGRAL
Brandt, S. (PI), Chenevez, J. (Project Participant), Westergaard, N. J. S. (Project Participant), Oxborrow, C. A. (Project Participant), Budtz-Jørgensen, C. (Project Participant), Lund, N. (Project Participant), Rasmussen, I. L. (Project Participant) & Villa, G. P. (Project Participant)
17/10/2002 → …
Project: Research

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Kuulkers, E., Chenevez, J., Shaw, S., Brandt, D., Courvoisier, T., Garau, A. D., Ebisawa, K., Kretschmar, P., Markwardt, C., Mowlavï, N., Oosterbroek, T., Paizis, A., Oneca, D. R., Sanchez-Fernandez, C., & Wijnands, R. (2006, Sept 20). Broadband INTEGRAL analysis of IGR J17497-2821. The Astronomer's telegram No. ATel #888 http://www.astronomerstelegram.org/?read=888

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title = "Broadband INTEGRAL analysis of IGR J17497-2821",

abstract = "We further analysed the INTEGRAL JEM-X observations performed on UT 2006, Sep 18, 08:30-12:12 (ATel #886) of the new hard INTEGRAL source IGR J17497-2821 (ATel #885). We find average fluxes of 31 +/- 10 mCrab and 47 +/- 12 mCrab in the 3-10 keV and 10-25 keV bands, respectively. The best-fit JEM-X position is RA = 267.405 deg, Dec = -28.356 deg (J2000.0), with a 90% confidence error of 1', consistent with that reported in ATels #885 and #886. A joint JEM-X and IBIS/ISGRI spectral analysis shows the 3-200 keV source spectrum to be well described by a single power-law with index 1.93 +/- 0.05. The 90% confidence upper limit on the absorption column, N_H, is about 6x10^22 atoms/cm^2, consistent with the average interstellar absorption in the direction of the source. At an assumed distance of 8 kpc the 2-10 keV and 2-100 keV (unabsorbed) source luminosities are about 5x10^36 erg/s and 10^37 erg/s, respectively. Our observations show IGR J17497-2821 to be in a low, hard, state, typically seen in black-hole candidate and neutron-star X-ray transients",

author = "E. Kuulkers and J. Chenevez and S. Shaw and D. Brandt and T. Courvoisier and Garau, {A. D} and K. Ebisawa and P. Kretschmar and C. Markwardt and N. Mowlav{\"i} and T. Oosterbroek and A. Paizis and Oneca, {D. R.} and C. Sanchez-Fernandez and R. Wijnands",

year = "2006",

month = sep,

day = "20",

language = "English",

series = "The Astronomer's telegram",

publisher = "R. Rutledge",

number = "ATel #888",

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TY - ICOMM

T1 - Broadband INTEGRAL analysis of IGR J17497-2821

AU - Kuulkers, E.

AU - Chenevez, J.

AU - Shaw, S.

AU - Brandt, D.

AU - Courvoisier, T.

AU - Garau, A. D

AU - Ebisawa, K.

AU - Kretschmar, P.

AU - Markwardt, C.

AU - Mowlavï, N.

AU - Oosterbroek, T.

AU - Paizis, A.

AU - Oneca, D. R.

AU - Sanchez-Fernandez, C.

AU - Wijnands, R.

PY - 2006/9/20

Y1 - 2006/9/20

N2 - We further analysed the INTEGRAL JEM-X observations performed on UT 2006, Sep 18, 08:30-12:12 (ATel #886) of the new hard INTEGRAL source IGR J17497-2821 (ATel #885). We find average fluxes of 31 +/- 10 mCrab and 47 +/- 12 mCrab in the 3-10 keV and 10-25 keV bands, respectively. The best-fit JEM-X position is RA = 267.405 deg, Dec = -28.356 deg (J2000.0), with a 90% confidence error of 1', consistent with that reported in ATels #885 and #886. A joint JEM-X and IBIS/ISGRI spectral analysis shows the 3-200 keV source spectrum to be well described by a single power-law with index 1.93 +/- 0.05. The 90% confidence upper limit on the absorption column, N_H, is about 6x10^22 atoms/cm^2, consistent with the average interstellar absorption in the direction of the source. At an assumed distance of 8 kpc the 2-10 keV and 2-100 keV (unabsorbed) source luminosities are about 5x10^36 erg/s and 10^37 erg/s, respectively. Our observations show IGR J17497-2821 to be in a low, hard, state, typically seen in black-hole candidate and neutron-star X-ray transients

AB - We further analysed the INTEGRAL JEM-X observations performed on UT 2006, Sep 18, 08:30-12:12 (ATel #886) of the new hard INTEGRAL source IGR J17497-2821 (ATel #885). We find average fluxes of 31 +/- 10 mCrab and 47 +/- 12 mCrab in the 3-10 keV and 10-25 keV bands, respectively. The best-fit JEM-X position is RA = 267.405 deg, Dec = -28.356 deg (J2000.0), with a 90% confidence error of 1', consistent with that reported in ATels #885 and #886. A joint JEM-X and IBIS/ISGRI spectral analysis shows the 3-200 keV source spectrum to be well described by a single power-law with index 1.93 +/- 0.05. The 90% confidence upper limit on the absorption column, N_H, is about 6x10^22 atoms/cm^2, consistent with the average interstellar absorption in the direction of the source. At an assumed distance of 8 kpc the 2-10 keV and 2-100 keV (unabsorbed) source luminosities are about 5x10^36 erg/s and 10^37 erg/s, respectively. Our observations show IGR J17497-2821 to be in a low, hard, state, typically seen in black-hole candidate and neutron-star X-ray transients

M3 - Net publication - Internet publication

T3 - The Astronomer's telegram

ER -

Broadband INTEGRAL analysis of IGR J17497-2821

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JEM-X: The JEM-X X-ray monitor on INTEGRAL

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