Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-08-12
Astron.Astrophys.411:L343-L356,2003
Astronomy and Astrophysics
Astrophysics
4 figures, accepted for publication in A+A letters
Scientific paper
10.1051/0004-6361:20031206
INTEGRAL has observed the bright quasar 3C 273 on 3 epochs in January 2003 as one of the first observations of the open programme. The observation on January 5 was simultaneous with RXTE and XMM-Newton observations. We present here a first analysis of the continuum emission as observed by these 3 satellites in the band from 3 keV to 500 keV. The continuum spectral energy distribution of 3C 273 was observed to be weak and steep in the high energies during this campaign. We present the actual status of the cross calibrations between the instruments on the three platforms using the calibrations available in June 2003.
Beckmann Volker
Bourban G.
Chenevez Jerome
Chernyakova Maria
Courvoisier Thierry J. -L.
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