NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-06-17 T04:32:44 PDT
Help | Comment | NED Home

For refcode 2016MNRAS.463..382U:
Retrieve 1 NED object in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by Royal Astronomical Society. 2016MNRAS.463..382U High-energy monitoring of NGC 4593 with XMM-Newton and NuSTAR. X-ray spectral analysis Ursini, F.; Petrucci, P.-O.; Matt, G.; Bianchi, S.; Cappi, M.; De Marco, B.; De Rosa, A.; Malzac, J.; Marinucci, A.; Ponti, G.; Tortosa, A. Abstract. We present results from a joint XMM-Newton/NuSTAR monitoring of the Seyfert 1 NGC 4593, consisting of 5 x 20 ks simultaneous observations spaced by 2 d, performed in 2015 January. The source is variable, both in flux and spectral shape, on time-scales down to a few ks and with a clear softer-when-brighter behaviour. In agreement with past observations, we find the presence of a warm absorber well described by a two-phase ionized outflow. The source exhibits a cold, narrow and constant Fe Kalpha line at 6.4 keV, and a broad component is also detected. The broad-band (0.3-79 keV) spectrum is well described by a primary power law with Gamma ~= 1.6-1.8 and an exponential cut-off varying from 90^{+ 40}_{- 20}_ to >700 keV, two distinct reflection components, and a variable soft excess correlated with the primary power law. This campaign shows that probing the variability of Seyfert 1 galaxies on different time-scales is of prime importance to investigate the high-energy emission of active galactic nuclei. Key words: galaxies: active, galaxies: Seyfert, X-rays: galaxies, X-rays: individual: NGC 4593
Retrieve 1 NED object in this reference.
Please click here for ADS abstract

Back to NED Home