6533b839fe1ef96bd12a5bfd

RESEARCH PRODUCT

A broad iron line in the Chandra/HETG spectrum of 4U 1705-44

Mariano MendezR. IariaN. R. RobbaLuciano BurderiLuigi StellaT. Di SalvoM. Van Der Klis

subject

PhysicsNuclear and High Energy PhysicsNeutron starFull width at half maximumSpectrometerAccretion discK-alphaAstronomyAstrophysicsAtomic and Molecular Physics and Optics

description

We present preliminary results from a Chandra 30 ks observation of the atoll sourco 4U 1705 44. In particular we concentrate on the study of the iron Kα line, using the HEG spectrometer. The iron Kα line at ~ 6.6 keV is found to be intrinsically broad (FWHM ~ 1.7 keV); its width can be explained by reflection from a cold accretion disk extending down to ~ 17 km from the neutron star center or by Compton broadening in the hotter (~ 3 – 4 keV) corona.

yearjournalcountryeditionlanguage
2004-06-01
10.1016/j.nuclphysbps.2004.04.102http://hdl.handle.net/10447/3623