INTEGRAL discovery of a new transient source: IGR J16374-5043: ATel 2809

L. Pavan; R. Terrier; E. Bozzo; C. Ferrigno; S. Mereghetti; A. Paizi; L. Ducci; D. Gotz; A. Bazzano; M. Fiocchi; A. De Rosa; A. Tarana; M. Del Santo; L. Natalucci; F. Panessa; F. Capitanio; V. Sguera; V. Bianchin; K. Watanabe; L. Kuiper; L. Barragan; J. Chenevez; I. Caballero; C. Sanchez-Fernandez; A. Bird; C. Shrader; G. Puehlhofer; G. Skinner; P. R. Hartog; K. Pottschmidt; I. Negueruela; L. Prat

INTEGRAL discovery of a new transient source: IGR J16374-5043: ATel 2809

L. Pavan
, R. Terrier
, E. Bozzo
, C. Ferrigno
, S. Mereghetti
, A. Paizi
, L. Ducci
, D. Gotz
, A. Bazzano
, M. Fiocchi
, A. De Rosa
, A. Tarana
, M. Del Santo
, L. Natalucci
, F. Panessa
, F. Capitanio
, V. Sguera
, V. Bianchin
, K. Watanabe
, L. Kuiper

L. Barragan, J. Chenevez, I. Caballero, C. Sanchez-Fernandez, A. Bird, C. Shrader, G. Puehlhofer, G. Skinner, P. R. Hartog, K. Pottschmidt, I. Negueruela, L. Prat

University of Geneva
CNRS
National Institute for Astrophysics
French Alternative Energies and Atomic Energy Commission
Florida Gulf Coast University
SRON Netherlands Institute for Space Research
Friedrich-Alexander University Erlangen-Nürnberg
University of Southampton
NASA Goddard Space Flight Center
Eberhard-Karls-Universität Tübingen
University of Maryland, College Park
Stanford University
University of Alicante
University of Maryland, Baltimore County

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

Abstract

During the INTEGRAL observations of RX J1713.7-3946 (PI R. Terrier), performed between 2010-08-21 03:39 and 2010-08-23 12:03, a new transient source was discovered by the soft gamma-ray imager IBIS/ISGRI (17-300 keV). The source is detected at a significance level of 10 sigma in the 20-40 keV energy band and 5 sigma in the 40-80 keV energy band (exposure time 187 ks). The corresponding averaged X-ray fluxes are 10 mCrab (~7.6e-11 erg/s/cm2) and 9 mCrab (~6.9e-11 erg/s/cm2), respectively. The best determined source coordinates are (RA,DEC) = (249.34, 50.73) (epoch J2000) with an estimated error of 2 arcmin. We named the source IGR J16374-5043. An investigation of the light curve revealed the presence of a bright flare on 2010 August 22 at 00:40, lasting for about 0.9 days. We estimated a peak flux of 70+/-10 mCrab (20-40 keV) reached approximatively two hours after the onset of the burst. The average spectrum is well fit by a power-law of index 2.4+/-1.0 and the spectrum extracted in correspondence of the peak (2010-08-22 2:40 - 6:28) by a power-law of index 1.7 +/- 1.3.. The source was always outside the X-ray monitor JEM-X (3-32 keV) field of view. An image of the region around IGR J16374-5043 and the source light curve will be posted here.

Original language	English
Publication date	24 Aug 2010
Edition	2809
Publication status	Published - 24 Aug 2010

Series	The Astronomer's telegram
Number	ATel #2809

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Pavan, L., Terrier, R., Bozzo, E., Ferrigno, C., Mereghetti, S., Paizi, A., Ducci, L., Gotz, D., Bazzano, A., Fiocchi, M., De Rosa, A., Tarana, A., Del Santo, M., Natalucci, L., Panessa, F., Capitanio, F., Sguera, V., Bianchin, V., Watanabe, K., ... Prat, L. (2010, Aug 24). INTEGRAL discovery of a new transient source: IGR J16374-5043: ATel 2809. (2809 ed.) The Astronomer's telegram No. ATel #2809 http://www.astronomerstelegram.org/?read=2809

@misc{567b8bdbc7a046fcae2fc25955f2ef86,

title = "INTEGRAL discovery of a new transient source: IGR J16374-5043: ATel 2809",

abstract = "During the INTEGRAL observations of RX J1713.7-3946 (PI R. Terrier), performed between 2010-08-21 03:39 and 2010-08-23 12:03, a new transient source was discovered by the soft gamma-ray imager IBIS/ISGRI (17-300 keV). The source is detected at a significance level of 10 sigma in the 20-40 keV energy band and 5 sigma in the 40-80 keV energy band (exposure time 187 ks). The corresponding averaged X-ray fluxes are 10 mCrab (\textasciitilde{}7.6e-11 erg/s/cm2) and 9 mCrab (\textasciitilde{}6.9e-11 erg/s/cm2), respectively. The best determined source coordinates are (RA,DEC) = (249.34, 50.73) (epoch J2000) with an estimated error of 2 arcmin. We named the source IGR J16374-5043. An investigation of the light curve revealed the presence of a bright flare on 2010 August 22 at 00:40, lasting for about 0.9 days. We estimated a peak flux of 70+/-10 mCrab (20-40 keV) reached approximatively two hours after the onset of the burst. The average spectrum is well fit by a power-law of index 2.4+/-1.0 and the spectrum extracted in correspondence of the peak (2010-08-22 2:40 - 6:28) by a power-law of index 1.7 +/- 1.3.. The source was always outside the X-ray monitor JEM-X (3-32 keV) field of view. An image of the region around IGR J16374-5043 and the source light curve will be posted here.",

author = "L. Pavan and R. Terrier and E. Bozzo and C. Ferrigno and S. Mereghetti and A. Paizi and L. Ducci and D. Gotz and A. Bazzano and M. Fiocchi and \{De Rosa\}, A. and A. Tarana and \{Del Santo\}, M. and L. Natalucci and F. Panessa and F. Capitanio and V. Sguera and V. Bianchin and K. Watanabe and L. Kuiper and L. Barragan and J. Chenevez and I. Caballero and C. Sanchez-Fernandez and A. Bird and C. Shrader and G. Puehlhofer and G. Skinner and Hartog, \{P. R.\} and K. Pottschmidt and I. Negueruela and L. Prat",

year = "2010",

month = aug,

day = "24",

language = "English",

series = "The Astronomer's telegram",

publisher = "R. Rutledge",

number = "ATel \#2809",

edition = "2809",

type = "Other",

}

Pavan, L, Terrier, R, Bozzo, E, Ferrigno, C, Mereghetti, S, Paizi, A, Ducci, L, Gotz, D, Bazzano, A, Fiocchi, M, De Rosa, A, Tarana, A, Del Santo, M, Natalucci, L, Panessa, F, Capitanio, F, Sguera, V, Bianchin, V, Watanabe, K, Kuiper, L, Barragan, L, Chenevez, J, Caballero, I, Sanchez-Fernandez, C, Bird, A, Shrader, C, Puehlhofer, G, Skinner, G, Hartog, PR, Pottschmidt, K, Negueruela, I & Prat, L 2010, INTEGRAL discovery of a new transient source: IGR J16374-5043: ATel 2809. <http://www.astronomerstelegram.org/?read=2809>

TY - ICOMM

T1 - INTEGRAL discovery of a new transient source: IGR J16374-5043

T2 - ATel 2809

AU - Pavan, L.

AU - Terrier, R.

AU - Bozzo, E.

AU - Ferrigno, C.

AU - Mereghetti, S.

AU - Paizi, A.

AU - Ducci, L.

AU - Gotz, D.

AU - Bazzano, A.

AU - Fiocchi, M.

AU - De Rosa, A.

AU - Tarana, A.

AU - Del Santo, M.

AU - Natalucci, L.

AU - Panessa, F.

AU - Capitanio, F.

AU - Sguera, V.

AU - Bianchin, V.

AU - Watanabe, K.

AU - Kuiper, L.

AU - Barragan, L.

AU - Chenevez, J.

AU - Caballero, I.

AU - Sanchez-Fernandez, C.

AU - Bird, A.

AU - Shrader, C.

AU - Puehlhofer, G.

AU - Skinner, G.

AU - Hartog, P. R.

AU - Pottschmidt, K.

AU - Negueruela, I.

AU - Prat, L.

PY - 2010/8/24

Y1 - 2010/8/24

N2 - During the INTEGRAL observations of RX J1713.7-3946 (PI R. Terrier), performed between 2010-08-21 03:39 and 2010-08-23 12:03, a new transient source was discovered by the soft gamma-ray imager IBIS/ISGRI (17-300 keV). The source is detected at a significance level of 10 sigma in the 20-40 keV energy band and 5 sigma in the 40-80 keV energy band (exposure time 187 ks). The corresponding averaged X-ray fluxes are 10 mCrab (~7.6e-11 erg/s/cm2) and 9 mCrab (~6.9e-11 erg/s/cm2), respectively. The best determined source coordinates are (RA,DEC) = (249.34, 50.73) (epoch J2000) with an estimated error of 2 arcmin. We named the source IGR J16374-5043. An investigation of the light curve revealed the presence of a bright flare on 2010 August 22 at 00:40, lasting for about 0.9 days. We estimated a peak flux of 70+/-10 mCrab (20-40 keV) reached approximatively two hours after the onset of the burst. The average spectrum is well fit by a power-law of index 2.4+/-1.0 and the spectrum extracted in correspondence of the peak (2010-08-22 2:40 - 6:28) by a power-law of index 1.7 +/- 1.3.. The source was always outside the X-ray monitor JEM-X (3-32 keV) field of view. An image of the region around IGR J16374-5043 and the source light curve will be posted here.

AB - During the INTEGRAL observations of RX J1713.7-3946 (PI R. Terrier), performed between 2010-08-21 03:39 and 2010-08-23 12:03, a new transient source was discovered by the soft gamma-ray imager IBIS/ISGRI (17-300 keV). The source is detected at a significance level of 10 sigma in the 20-40 keV energy band and 5 sigma in the 40-80 keV energy band (exposure time 187 ks). The corresponding averaged X-ray fluxes are 10 mCrab (~7.6e-11 erg/s/cm2) and 9 mCrab (~6.9e-11 erg/s/cm2), respectively. The best determined source coordinates are (RA,DEC) = (249.34, 50.73) (epoch J2000) with an estimated error of 2 arcmin. We named the source IGR J16374-5043. An investigation of the light curve revealed the presence of a bright flare on 2010 August 22 at 00:40, lasting for about 0.9 days. We estimated a peak flux of 70+/-10 mCrab (20-40 keV) reached approximatively two hours after the onset of the burst. The average spectrum is well fit by a power-law of index 2.4+/-1.0 and the spectrum extracted in correspondence of the peak (2010-08-22 2:40 - 6:28) by a power-law of index 1.7 +/- 1.3.. The source was always outside the X-ray monitor JEM-X (3-32 keV) field of view. An image of the region around IGR J16374-5043 and the source light curve will be posted here.

M3 - Net publication - Internet publication

T3 - The Astronomer's telegram

ER -

INTEGRAL discovery of a new transient source: IGR J16374-5043: ATel 2809

Abstract

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