2005A&A...433..613D

Query : 2005A&A...433..613D

2005A&A...433..613D - Astronomy and Astrophysics, volume 433, 613-617 (2005/4-2)

1E 1740.7-2942: Temporal and spectral evolution from INTEGRAL and RXTE observations.

DEL SANTO M., BAZZANO A., ZDZIARSKI A.A., SMITH D.M., BEZAYIFF N., FARINELLI R., DE CESARE G., UBERTINI P., BIRD A.J., CADOLLE-BEL M., CAPITANIO F., GOLDWURM A., MALIZIA A., MIRABEL I.F., NATALUCCI L. and WINKLER C.

Abstract (from CDS):

We present results of the monitoring of the black hole candidate 1E 1740.7-2942 with INTEGRAL, in combination with simultaneous observations by RXTE. We concentrate on broad-band spectra from INTEGRAL/IBIS and RXTE/PCA instruments. During our observations, the source spent most of its time in the canonical low/hard state with the measured flux variation within a factor of two. In 2003 September the flux started to decline and in 2004 February it was below the sensitivity level of the INTEGRAL and RXTE instruments. Notably, during the decline phase the spectrum changed, becoming soft and typical of black-hole binaries in the intermediate/soft state.

Abstract Copyright: ∼

Journal keyword(s): gamma rays: observations - radiation mechanisms: non-thermal - stars: individual: 1E 1740.7-2942 - X-rays: binaries - black hole physics

Simbad objects: 6

Full paper

View the references in ADS

Number of rows : 6

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Sp type	#ref 1850 - 2023	#notes
1	V* V821 Ara	HXB	17 02 49.3876391280	-48 47 23.087954544	16.20	16.30	15.5		~	1996	0
2	NAME Great Annihilator	LXB	17 43 54.83	-29 44 42.6					~	667	1
3	NAME Galactic Center	reg	17 45 39.60213	-29 00 22.0000					~	13665	0
4	NAME XTE J17464-3213	LXB	17 46 15.59637	-32 14 00.8600					~	705	0
5	2XMM J180112.4-254436	LXB	18 01 12.40	-25 44 36.1					~	382	1
6	HD 226868	HXB	19 58 21.6757355952	+35 12 05.784512688	9.38	9.72	8.91	8.42	O9.7Iabpvar	4226	0

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