2006A&A...447.1027B

Query : 2006A&A...447.1027B

2006A&A...447.1027B - Astronomy and Astrophysics, volume 447, 1027-1034 (2006/3-1)

IGR J16393-4643: a new heavily-obscured X-ray pulsar.

BODAGHEE A., WALTER R., ZURITA HERAS J.A., BIRD A.J., COURVOISIER T.J.-L., MALIZIA A., TERRIER R. and UBERTINI P.

Abstract (from CDS):

An analysis of the high-energy emission from IGRJ16393-4643 (=AXJ1639.0-4642) is presented using data from INTEGRAL and XMM-Newton. The source is persistent in the 20-40keV band at an average flux of 5.1x10^–11erg/cm²/s, with variations in intensity by at least an order of magnitude. A pulse period of 912.0±0.1 s was discovered in the ISGRI and EPIC light curves. The source spectrum is a strongly-absorbed (N_H=(2.5±0.2)x10²³cm^–2) power law that features a high-energy cutoff above 10keV. Two iron emission lines at 6.4 and 7.1keV, an iron absorption edge >7.1keV, and a soft excess emission of 7x10^–15erg/cm²/s between 0.5-2keV, are detected in the EPIC spectrum. The shape of the spectrum does not change with the pulse. Its persistence, pulsation, and spectrum place IGRJ16393-4643 among the class of heavily-absorbed HMXBs. The improved position from EPIC is RA (J2000)=16^h39^m05.4^s and Dec=-46°42'12" (4" uncertainty) which is compatible with that of 2MASSJ16390535-4642137.

Abstract Copyright: ∼

Journal keyword(s): gamma-rays: observations - X-rays: binaries - pulsars: individual: IGR J16393-4643 - pulsars: individual: AX J1639.0-4642

Simbad objects: 13

Full paper

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Number of rows : 13

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag V	Sp type	#ref 1850 - 2023	#notes
1	NAME Nor Arm	PoG	16 00	-50.0		~	411	0
2	IGR J16318-4848	HXB	16 31 48.3090342864	-48 49 00.665054832		~	169	0
3	3FHL J1633.0-4746e	HXB	16 32 01.87	-47 52 28.3		O8I	170	3
4	X Nor X-1	LXB	16 34 01.610	-47 23 34.80		~	494	0
5	[KRL2007b] 194	Psr	16 36 30	-47 37.5		Be	80	0
6	EQ J1639.0-4642	Rad	16 39	-46.7		~	2	0
7	2MASS J16390344-4642283	Cl*	16 39 03.448	-46 42 28.32		~	7	0
8	2MASS J16390535-4642137	NIR	16 39 05.36	-46 42 13.7		~	12	1
9	NAME AX J163904-4642	HXB	16 39 06	-46 42.2		BIV-V	92	1
10	3EG J1639-4702	gam	16 40 30.0	-46 33 00		~	154	2
11	2MASS J16415078-4532253	HXB	16 41 50.7984926736	-45 32 25.366995132		O8.5(sg?)	104	2
12	4U 1642-45	LXB	16 45 47.7	-45 36 40	14.30	~	407	1
13	2MASS J16480656-4512068	HXB	16 48 06.56	-45 12 06.8		O8.5Iab	130	2

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