A dataset provided by the European Space Agency

Proposal ID 0120047
Obs ID 01200470001
Title OBSERVATIONS OF TYPE II SEYFERT GALAXIES
Download Data Associated to the proposal https://isla.esac.esa.int/tap/download/bundle?format=ascii_curl&product_id=prop_id:0120047
DOI https://doi.org/10.57780/esa-gyumgp6
Author Deluit
Abstract The study of hard X-ray emission (i.e. energy above 20 keV) of Seyfert galaxies is a powerful tool for extracting information on the intrinsic source emission properties as luminosity and spectral shape of the sources and on the intervening medium.Observations and measurements are fundamental and necessary for the study and understanding of the emission mechanisms operating in this type of objects and for testing unified models.At lower energies, we can obtain informations on column densities, ionisation and abundances of the surrounding matter which probe the environment around the central engine.We require three observations each of 100 ks of the brightest Seyfert 2 galaxy NGC 4945 and one observation of 400 ks of NGC 5506. These observations will provide a good detection of the high energy spectra which will allow us precise spectral and variability studies. These observations will also provide the basis for a comparison of Seyfert 1 and Seyfert 2 galaxies at high energy to test the unified model which predicts the same behaviour (spectra, variability) for both types.
Publications
Temporal Coverage 2004-01-04T12:54:45Z / 2004-01-06T19:38:52Z
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, Deluit, 2025, 'OBSERVATIONS OF TYPE II SEYFERT GALAXIES', 1.0, European Space Agency, https://doi.org/10.57780/esa-gyumgp6