A dataset provided by the European Space Agency

Proposal ID 0820026
Obs ID 08200260001, 08200260002
Title Probing the structure of superaccreting disk in microquasar SS433 from INTEGRAL observations
Download Data Associated to the proposal https://isla.esac.esa.int/tap/download/bundle?format=ascii_curl&product_id=prop_id:0820026
DOI https://doi.org/10.57780/esa-ze4d7lm
Author Cherepashchuk
Abstract We propose to spend four fixed-time orbits of INTEGRAL (475 000s + 475 000s) to observe the galactic microquasar SS433, which fully cover two orbital hard-X-eay eclipses near the face-on disk precessional phase of the source in April 2011 and October 2011. AO8 is exceptional for SS433 observations in comparison to all prevous INTEGRAL AOs in providing the rare opportunity to see two precessional maxima within visibility constraints of INTEGRAL, and we propose to make use of this opportunity. The main scientific goal of new observations is to carry out hard X-ray spectroscopy of the source during the primary eclispe ingress/egress and to study its highly variable form.The phase-resolved spectroscopy will be used to probe the structure and physical parameters of a 20-keV rarefied corona around the center of the supercritical accretion disk in SS433 discovered in previous INTEGRAL observations. Adding new hard X-ray light curves of the primary eclipse near the precessional maximum will significantly improve upon the geometrical model of the source and the binary system parameters. The proposal is not associated with any of the AO8 Key Programs.
Publications
Temporal Coverage 2011-04-20T06:58:52Z / 2011-04-25T21:25:41Z
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 2025-03-25T09:54:36Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Cherepashchuk, 2025, 'Probing the structure of superaccreting disk in microquasar SS433 from INTEGRAL observations', 1.0, European Space Agency, https://doi.org/10.57780/esa-ze4d7lm