A dataset provided by the European Space Agency

Proposal ID 0520048
Obs ID 05200480001
Title A Complete AGN Census at High Energies with INTEGRAL
Download Data Associated to the proposal https://isla.esac.esa.int/tap/download/bundle?format=ascii_curl&product_id=prop_id:0520048
DOI https://doi.org/10.57780/esa-ix98v66
Author Virani
Abstract Observations of the X-ray background strongly suggest that there should be a large number of highly obscured AGN inthe local Universe. However, the exact number and space density of these objects remains unconstrained. These AGNare detectable by INTEGRAL. We propose to extend our observations in the XMM-LSS field, and thus obtain the deepestINTEGRAL observations of an extragalactic field performed in this energy range so far, which will provide a completeview of the highly obscured AGN population in the local Universe. The proposed 2 Msec observations of the XMM-LSSfield will double the expected exposure time on the field to 4 Msec, thus allowing us to find ~15 extragalactic sources.These observations will significantly increase the number of AGN found in a sample selected at 20--40 keV bysampling this population to fainter fluxes. This will increase the resolved fraction of the background at these highenergies and additionally will allow us to perform more detailed spectral fitting on the brightest sources, such asinvestigating the presence of a high-energy cut-off in the AGN spectra in the brightest sources as well as in the stackedspectrum of all detected AGN. These data will stand as a legacy of INTEGRAL as the deepest extragalactic softgamma-ray survey of the sky for at least the next decade.
Publications
Temporal Coverage 2008-06-22T05:04:27Z / 2008-07-11T19:17:33Z
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 2025-03-25T09:54:35Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Virani, 2025, 'A Complete AGN Census at High Energies with INTEGRAL', 1.0, European Space Agency, https://doi.org/10.57780/esa-ix98v66