A dataset provided by the European Space Agency

Proposal ID 0120214
Obs ID 01202140003, 01202140004, 01202140005
Title Integral Spectroscopy of Radio Quiet QSOs
Download Data Associated to the proposal https://isla.esac.esa.int/tap/download/bundle?format=ascii_curl&product_id=prop_id:0120214
DOI https://doi.org/10.57780/esa-jukoph1
Author Orr
Abstract By many of their properties radio quiet quasars (RQQs) occupy apoorly understood intermediary position between Seyfert 1 galaxies (Sy1s) and radio loud quasars (RLQs). In the X-ray domain there are, however, several notable differences between these 3 categories of Active Galactic Nuclei (AGN).We propose to observe with INTEGRAL the three brightest RQQs in the X-ray band, E 1821+643, HE 1029-1401 and MR 2251-178}, in order to measure the spectral shape of their hard X-ray emission, which is not well known up to now. Our aim is: a) to test thepresence of Compton reflection components, ionized or neutral and b)to measure the shape and energy of the high energy spectral cut-off.The scientific goal of this proposal is to obtain a better understanding of the hard spectral energy distribution of RQQs, in particular at high energies. We will thereby gain deeper insight on the relationship between RQQs, Sy1s and RLQs.This will be achieved by taking a single exposure of 500 ksper quasar.
Publications
Temporal Coverage 2002-12-30T20:01:50Z / 2003-11-26T19:10:29Z
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 2025-03-25T09:54:30Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Orr, 2025, 'Integral Spectroscopy of Radio Quiet QSOs', 1.0, European Space Agency, https://doi.org/10.57780/esa-jukoph1