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Paper   IPM / Astronomy / 12795
School of Astronomy
Title:   Radiation Spectrum of a Magnetized Supercritical Accretion Disc with Thermal Conduction
Author(s):
 1 M. Ghasemnezhad 2 M. Khajavi 3 S. Abbasi
Status:   Published
Journal: Astrophysics and Space Science
No.:  arXiv:1304.6922
Vol.:  346
Year:  2013
Pages:   341-349
Supported by:  IPM
Abstract:
We examine the effect of thermal conduction on the observational properties of a super critical hot magnetized flow. We obtained self-similar solution of a magnetized disc when the thermal conduction plays an important role. Follow of our first paper (Ghasemnezhad et al. 2012 (hereafter GKA12)) we have extended our solution on the observational appearance of the disc to show how physical condition such as thermal conduction, viscosity, and advection will change the observed luminosity of the disc, Continuous spectra and surface temperature of such discs was plotted. We apply the present model to black-hole X-ray binary LMC X-3 and narrow-line seyfert 1 galaxies, which are supposed to be under critical accretion rate. Our results show clearly that the surface temperature is strongly depends on the thermal conduction, the magnetic field and advection parameter. However we see that thermal conduction acts to oppose the temperature gradient as we expect and observed luminosity of the disc will reduce when thermal conduction is high. We have shown that in this model the spectra of critical accretion flows strongly depends on the inclination angle.