Computer Science
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010fym..confp...7s&link_type=abstract
"The First Year of MAXI: Monitoring Variable X-ray Sources", Poster Presentations, 4th International MAXI Workshop held November
Computer Science
Scientific paper
We present our latest X-ray and near-infrared results of the Galactic black hole candidate GX 339-4 observed with Suzaku and IRSF (Infra-Red Survey Facility) in 2009 March during the low/hard state. The X-ray spectral analysis indicates that the accretion disk is truncated, and that its inner part is almost fully covered by hot corona with an electron temperature of approximately 170 keV. The Comptonized corona has an inhomogeneous structure with at least two optical depths, tau = 0.91 and 0.25. The one-day averaged near-infrared light curves are found to be correlated with hard X-ray flux. The radio to near infrared spectral energy distribution suggests that the optically thin synchrotron radiation from the compact jets dominates the near-infrared flux. We estimate that the magnetic field and size of the jet base are ˜ 10^4 G and ˜ 10^9 cm, respectively, and that the synchrotron self Compton component contributes less than 10% of the total X-ray flux. Finally, we also report results from the long term monitoring of GX 339-4 with MAXI and discuss the spectral evolution.
Cottam Jean
Kubota Aya
MAXI Team
Nagata Takahiro
Nagayama Taka
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