INTEGRAL observes IGR J17464-3213 in the soft state

P. Kretschmar; J. Chenevez; F. Capitanio; A. Orr; G. Palumbo; S. Grebenev

INTEGRAL observes IGR J17464-3213 in the soft state

P. Kretschmar^*, J. Chenevez, F. Capitanio, A. Orr, G. Palumbo, S. Grebenev

^*Corresponding author for this work

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

Abstract

The X-ray transient and black hole candidate IGR J17464-3213 (ATEL #132) = H1743-322, XTE J1746-322 (ATEL #133, #136) has been observed again during the Galactic Center Deep Exposure of the INTEGRAL Core Program.

Compared to previous INTEGRAL observations the source has now changed to a soft state and is visible with the JEM-X monitor. The source fluxes were ~400 mCrab and ~120 mCrab in the energy ranges 4-6 and 6-10 keV respectively. No significant flux was detected above 20 keV neither with JEM-X nor with IBIS/ISGRI. The JEM-X spectrum can be described by a blackbody model with kT~0.88+-0.07 keV using a fixed absorption value of 2.5e22 derived from earlier observations. No power law tail is required to fit the JEM-X data.

From the JEM-X observations the source position is found to be R.A. = 17h46.3m, Decl. = -32o14.4' with an uncertainty of 0.5'. This is consistent with the VLA position reported in ATEL #137.

Original language	English
Publication date	21 Aug 2003
Publication status	Published - 21 Aug 2003

Series	The Astronomer's telegram
Number	ATel #180

Keywords

X-ray
Gamma ray
Black hole
Transient

Access to Document

http://www.astronomerstelegram.org/?read=180

OpenUrl availability

Full text

Cite this

@misc{daf3b3c9287e4ed68ff2f0c091e7a02c,

title = "INTEGRAL observes IGR J17464-3213 in the soft state",

abstract = " The X-ray transient and black hole candidate IGR J17464-3213 (ATEL #132) = H1743-322, XTE J1746-322 (ATEL #133, #136) has been observed again during the Galactic Center Deep Exposure of the INTEGRAL Core Program. Compared to previous INTEGRAL observations the source has now changed to a soft state and is visible with the JEM-X monitor. The source fluxes were ~400 mCrab and ~120 mCrab in the energy ranges 4-6 and 6-10 keV respectively. No significant flux was detected above 20 keV neither with JEM-X nor with IBIS/ISGRI. The JEM-X spectrum can be described by a blackbody model with kT~0.88+-0.07 keV using a fixed absorption value of 2.5e22 derived from earlier observations. No power law tail is required to fit the JEM-X data. From the JEM-X observations the source position is found to be R.A. = 17h46.3m, Decl. = -32o14.4' with an uncertainty of 0.5'. This is consistent with the VLA position reported in ATEL #137. ",

keywords = "X-ray, Gamma ray, Black hole, Transient",

author = "P. Kretschmar and J. Chenevez and F. Capitanio and A. Orr and G. Palumbo and S. Grebenev",

year = "2003",

month = aug,

day = "21",

language = "English",

series = "The Astronomer's telegram",

publisher = "R. Rutledge",

number = "ATel #180",

type = "Other",

}

TY - ICOMM

T1 - INTEGRAL observes IGR J17464-3213 in the soft state

AU - Kretschmar, P.

AU - Chenevez, J.

AU - Capitanio, F.

AU - Orr, A.

AU - Palumbo, G.

AU - Grebenev, S.

PY - 2003/8/21

Y1 - 2003/8/21

N2 - The X-ray transient and black hole candidate IGR J17464-3213 (ATEL #132) = H1743-322, XTE J1746-322 (ATEL #133, #136) has been observed again during the Galactic Center Deep Exposure of the INTEGRAL Core Program. Compared to previous INTEGRAL observations the source has now changed to a soft state and is visible with the JEM-X monitor. The source fluxes were ~400 mCrab and ~120 mCrab in the energy ranges 4-6 and 6-10 keV respectively. No significant flux was detected above 20 keV neither with JEM-X nor with IBIS/ISGRI. The JEM-X spectrum can be described by a blackbody model with kT~0.88+-0.07 keV using a fixed absorption value of 2.5e22 derived from earlier observations. No power law tail is required to fit the JEM-X data. From the JEM-X observations the source position is found to be R.A. = 17h46.3m, Decl. = -32o14.4' with an uncertainty of 0.5'. This is consistent with the VLA position reported in ATEL #137.

AB - The X-ray transient and black hole candidate IGR J17464-3213 (ATEL #132) = H1743-322, XTE J1746-322 (ATEL #133, #136) has been observed again during the Galactic Center Deep Exposure of the INTEGRAL Core Program. Compared to previous INTEGRAL observations the source has now changed to a soft state and is visible with the JEM-X monitor. The source fluxes were ~400 mCrab and ~120 mCrab in the energy ranges 4-6 and 6-10 keV respectively. No significant flux was detected above 20 keV neither with JEM-X nor with IBIS/ISGRI. The JEM-X spectrum can be described by a blackbody model with kT~0.88+-0.07 keV using a fixed absorption value of 2.5e22 derived from earlier observations. No power law tail is required to fit the JEM-X data. From the JEM-X observations the source position is found to be R.A. = 17h46.3m, Decl. = -32o14.4' with an uncertainty of 0.5'. This is consistent with the VLA position reported in ATEL #137.

KW - X-ray

KW - Gamma ray

KW - Black hole

KW - Transient

M3 - Net publication - Internet publication

T3 - The Astronomer's telegram

ER -

INTEGRAL observes IGR J17464-3213 in the soft state

Abstract

Keywords

Access to Document

OpenUrl availability

Fingerprint

Cite this