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Astron. Astrophys. 364, L80-L84 (2000)

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2. Observation and data reduction

BeppoSAX observed NGC 1052 between 2000 January 11 (19:27 UT) and 13 (08:57 UT). The instruments were operating in nominal direct modes. Data reduction and analysis followed standard procedures, as detailed, e.g., in Guainazzi et al. (1999). Scientific products from the imaging instruments (Low Energy Concentrator Spectrometer, LECS; Parmar et al. 1997; Medium Energy Concentrator Spectrometer, MECS; Boella et al. 1997) were extracted from circular regions around the galaxy X-ray centroid of radii 2´ and 4´, respectively. Background subtraction was performed using deep blank sky field exposures, accumulated by the BeppoSAX Science Data Center (SDC). The background-subtracted net count rates are [FORMULA] s-1 and [FORMULA] s-1, in the LECS (0.1-4 keV) and MECS (1.8-10.5 keV), respectively, corresponding to exposure times of 25.8 and 63.2 ks. Spectral analysis made use of the latest response matrices released by the SDC in January 2000.

In what follows: energies are quoted in the source rest frame, and errors are at 90% confidence level for one interesting parameter ([FORMULA]), unless otherwise specified.

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© European Southern Observatory (ESO) 2000

Online publication: January 29, 2001