A dataset provided by the European Space Agency

Proposal ID 0220007
Obs ID 02200070001, 02200070002
Title INTEGRAL monitoring of the hard X-ray properties of IGR J16318-4848 simultaneously with XMM-Newton
Download Data Associated to the proposal https://isla.esac.esa.int/tap/download/bundle?format=ascii_curl&product_id=prop_id:0220007
DOI https://doi.org/10.57780/esa-95tijm2
Author Kuulkers
Abstract IGR J16318-4848 is the first source newly discovered by INTEGRAL. It is most likely a high-mass X-ray binary, enshrouded by a dense envelope. The high-energy source is highly variable on time scales exceeding 15 min.A Target of Opportunity observation with XMM-Newton showed a source which is intrinsically absorbed by a high column density of 2x10^{24}/cm^2, together with strong fluorescence lines of exceptional equivalent widths, whichdominated the X-ray spectrum. Since the source is variable, attempts to model both the soft X-ray and hard X-ray spectrum were hampered by fact that the XMM-Newton observations were not simultaneously with any of the (short) observations performed by INTEGRAL.IGR J1631-4848 will be observed by XMM-Newton on 3 (or possibly 4) occasions as part of its AO-3 program, covering time scales from days to months. We here propose observations with INTEGRAL to be done simultaneously with XMM-Newton. This will enable us to better constrain the high-energy spectrum. This is essential to allow an unambiguous decomposition of the variability between the various spectral components.Only a few other examples of high-mass X-ray binary sources with similar spectral characteristics do exist. Also, a couple of other sources discovered by INTEGRAL seem to have similar high column densities.New observations may shed, therefore, also more light on this apparently new class of sources, as well as to the possibility of their contribution to the high-energy Galactic background radiation.
Publications
Temporal Coverage 2004-02-18T03:42:25Z / 2004-03-21T12:35:40Z
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, Kuulkers, 2025, 'INTEGRAL monitoring of the hard X-ray properties of IGR J16318-4848 simultaneously with XMM-Newton', 1.0, European Space Agency, https://doi.org/10.57780/esa-95tijm2