2009ApJ...694L..21C

Query : 2009ApJ...694L..21C

2009ApJ...694L..21C - Astrophys. J., 694, L21-L25 (2009/March-3)

Broad relativistic iron emission line observed in SAX J1808.4-3658.

CACKETT E.M., ALTAMIRANO D., PATRUNO A., MILLER J.M., REYNOLDS M., LINARES M. and WIJNANDS R.

Abstract (from CDS):

During the 2008 September-October outburst of the accreting millisecond pulsar SAX J1808.4-3658, the source was observed by both Suzaku and XMM-Newton approximately 1 day apart. Spectral analysis reveals a broad relativistic Fe Kα emission line which is present in both data sets, as has recently been reported for other neutron star low-mass X-ray binaries. The properties of the Fe K line observed during each observation are very similar. From modeling the Fe line, we determine the inner accretion disk radius to be 13.2±2.5 GM/c2. The inner disk radius measured from the Fe K line suggests that the accretion disk is not very receded in the hard state. If the inner disk (as measured by the Fe line) is truncated at the magnetospheric radius this implies a magnetic field strength of ∼3x108 G at the magnetic poles, consistent with other independent estimates.

Abstract Copyright: ∼

Journal keyword(s): stars: neutron - X-rays: binaries - X-rays: individual: SAX J1808.4-3658

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 SAX J1808.4-3658 LXB 18 08 27.58 -36 58 43.9           ~ 1051 0

Query : 2009ApJ...694L..21C

Basic data :
SAX J1808.4-3658 -- Low Mass X-ray Binary
Other object types: otypes_help 		X (2022MNRAS,PBC,...), LXB (2013ApJS), * (2008ApJ,[RCM98]), Psr (PSR), N* (2014MNRAS), V* (V*), gam (INTREF), Rad ([GSG99])
ICRS coord. (ep=J2000) : 		18 08 27.58 -36 58 43.9 (X-ray) [ 1500 1500 90 ] D 2020A&A...641A.136W
FK4 coord. (ep=B1950 eq=1950) : 		18 05 03.50 -36 59 13.4 [ 1500 1500 90 ]
Gal coord. (ep=J2000) : 		355.38517 -08.14832 [ 1500 1500 90 ]
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Identifiers (14) :
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INTREF 881 SWIFT J1808.5-3655 V* V4580 Sgr [GSG99] J180827.6-365843.9
PBC J1808.3-3656 SwXF4 J180827.6-365842 2XMM J180827.7-365841 [RCM98] J180827.5-365842
PSR J1808-3658 1SXPS J180827.6-365843 4XMM J180827.5-365843
SAX J1808.4-3658 2SXPS J180827.5-365842 XTE J1808-369

References (1051 between 1850 and 2026) (Total 1051)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Observing logs

XMM : 4   

   

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : SAX J1808.4-3658

Link by name to the catalogue in VizieR :

V* V4580 Sgr

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