A dataset provided by the European Space Agency

Proposal ID 0120114
Obs ID 01201140002
Title Probing the physics of high-energy spectra of NGC 4151and IC 4329A with INTEGRAL
Download Data Associated to the proposal https://isla.esac.esa.int/tap/download/bundle?format=ascii_curl&product_id=prop_id:0120114
DOI https://doi.org/10.57780/esa-u7k5pbc
Author Zdziarski
Abstract We propose observations of 2 brightest Seyfert 1s, NGC 4151 and IC 4329A, with exposure of 7.5E5 s each. The main goal of the observations is to accurately measure the shape of their high-energy, >100 keV, spectra. This will allow us to determine the relative contribution of thermal and non-thermal Comptonization in the sources. The presence of non-thermal Comptonization will lead to power-law like tails as well as broad pair annihilation features beyond the thermal cutoff. Such measurements will have profound theoretical consequences. Furthermore, we will study short-time scale variability of the sources and correlations between various spectral components. This will further constrain the physical processes and geometry of the sources. The field of view of IC 4329A also contains the famous MCG-6-30-15, which spectrum we will measure as well. For all observations, we will apply for XMM time, to provide simultaneous detailed measurements of the Fe K line and edge complex.
Publications
Temporal Coverage 2003-08-20T14:26:21Z / 2003-08-23T03:00:02Z
Version 1.0
Mission Description The INTEGRAL (International Gamma-Ray Astrophysics Laboratory) mission, launched by the European Space Agency (ESA) on October 17, 2002, was designed to study high-energy phenomena in the universe. INTEGRAL was operating until february 2025 and it was equipped with three high-energy instruments: the Imager on Board the INTEGRAL Satellite (IBIS), the Spectrometer on INTEGRAL (SPI), and the JEM-X (Joint European Monitor for X-rays). Its Optical Monitoring Camera (OMC) provided optical V-band magnitude measurements, complementing the high-energy observations.
Creator Contact https://www.cosmos.esa.int/web/integral/helpdesk
Date Published 2025-03-25T09:54:29Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Zdziarski, 2025, 'Probing the physics of high-energy spectra of NGC 4151\nand IC 4329A with INTEGRAL', 1.0, European Space Agency, https://doi.org/10.57780/esa-u7k5pbc