A dataset provided by the European Space Agency

Proposal ID 0120023
Obs ID 01200230002, 01200230003, 01200230004, 01200230005, 01200230006, 01200230007, 01200230008
Title The Physics of AGN: a Deep Understanding of the Quasar 3C 273
Download Data Associated to the proposal https://isla.esac.esa.int/tap/download/bundle?format=ascii_curl&product_id=prop_id:0120023
DOI https://doi.org/10.57780/esa-ig6lilb
Author Courvoisier
Abstract We propose to observe 3C 273 during each of its visibility periods (twice per year) for two long (200 ksec) observations, one at the beginning and the other at the end of the period and several short (10 ksec) observations in between. This will provide us with a set of data to investigate the high energy emission of the brightest quasar with unprecedented sensitivity and time sampling from few keV to several MeV.We will study both the Seyfert type emission and the jet related emission. We will see at which energies each of these components dominates and how it varies. We will thus establish the nature of the high energy emission, measure the temperature of the Comptonising medium, measure the properties of the electrons and positrons in the jet and measure the properties of the MeV spectral break. Our programme will be coordinated with a large multi-wavelength set of observations to relate the high energy components with those observed at lower energies, specifically the synchrotron emission of the jet and the blue bump.
Publications
Temporal Coverage 2003-01-05T12:32:42Z / 2004-01-02T08:52:21Z
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 2026-03-05T13:05:51Z
Keywords INTEGRAL gamma-ray data, ESA INTEGRAL mission dataset, gamma-ray astronomy observations, high-energy astrophysics data, IBIS imaging data, SPI spectrometer data, JEM-X X-ray monitoring data, OMC optical monitoring data, coded mask telescope observations, gamma-ray spectroscopy dataset, MeV astrophysics data, keV–MeV photon observations, gamma-ray burst observations dataset, black hole gamma-ray data, neutron star high-energy observations, positron annihilation 511 keV line data, Galactic Center gamma-ray emission dataset, supernova nucleosynthesis gamma-ray lines, active galactic nuclei high-energy data, transient astrophysical source monitoring, calibrated photon event lists, gamma-ray light curves, high-energy spectra data, sky maps gamma-ray, time-series astrophysical observations, long-term gamma-ray monitoring dataset
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Courvoisier, 2026, 'The Physics of AGN: a Deep Understanding of the Quasar 3C 273', 1.0, European Space Agency, https://doi.org/10.57780/esa-ig6lilb