NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-06-18 T22:20:21 PDT
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For refcode 2003A&A...411L.343C:
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Copyright by European Southern Observatory (ESO). Reproduced by permission
2003A&A...411L.343C Simultaneous observations of the quasar 3C 273 with INTEGRAL, XMM-Newton and RXTE T. J.-L. Courvoisier, V. Beckmann, G. Bourban, J. Chenevez, M. Chernyakova, S. Deluit, P. Favre, J. E. Grindlay, N. Lund, P. O'Brien, K. Page, N. Produit, M. Turler, M. J. L. Turner, R. Staubert, M. Stuhlinger, R. Walter and A. A. Zdziarski Received 15 July 2003 / Accepted 1 August 2003 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. Keywords: gamma-rays: observations, galaxies: active, quasars: general, quasars: individual: 3C 273
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