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| HAL: hal-00656096, version 1 |
| ADS Bibliographic id: 2011MNRAS.417.1140F |
| DOI: 10.1111/J.1365-2966.2011.19335.X |
| Detailed view |  Export this paper |
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| Monthly Notices of the Royal Astronomical Society 417 (2011) 1140-1147 |
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| Studying the long-time variability of the Seyfert 2 galaxy NGC 4388 with INTEGRAL and Swift |
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| E. V. FedorovaV. Beckmann1A. NeronovS. Soldi2 |
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| (2011-10) |
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| We present analysis results on the Seyfert 2 galaxy NGC 4388 based on 6 yr of INTEGRAL data combined with Swift/Burst Alert Telescope survey and Swift/X-Ray Telescope pointed observations. These data, taken from 2003 to 2009, allow us to study the broad-band properties of this active galactic nucleus in the 0.3-300 keV energy range. The continuum emission of NGC 4388 is well represented by an absorbed power-law model with exponential cut-off at high energies and an upper limit on the reflection component of R < 0.5. We find slow strong variations of the hard X-ray emission, indicating both flux and spectral slope changes on the 3-6 months time-scale. In comparison with previous results on NGC 4388, the source shows a complex variability behaviour, i.e. the spectral shape and the 20-60 keV flux vary independently. |
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| 1: | APC - AstroParticule et Cosmologie |
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| 2: | IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers (ex DAPNIA) |
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| APC - AHE |
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| Subject | : | Physics/Astrophysics/High Energy Astrophysical Phenomena Sciences of the Universe/Astrophysics/High Energy Astrophysical Phenomena |
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| X-rays: galaxies – galaxies: nuclei – galaxies: Seyfert |
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| hal-00656096, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00656096 | |
| oai:hal.archives-ouvertes.fr:hal-00656096 | |
| From: Volker Beckmann | |
| Submitted on: Tuesday, 3 January 2012 15:34:24 | |
| Updated on: Thursday, 28 June 2012 13:34:17 | |
