A dataset provided by the European Space Agency

Proposal ID 040670
Title First high resolution spectral studies from marginally stable nuclear burning
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https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0406700201

DOI https://doi.org/10.5270/esa-0dtffqt
Principal Investigator, PI Mr D. Altamirano
Abstract We propose to perform the first high spectral resolution studies of the recentlyfound milihertz quasi-periodic oscillations in the X-ray time variability of twoneutron star systems. These phenomena are very likely due to a marginally stablenuclear burning on the neutron star surface which means that by measuring thegravitational redshift of the spectral lines we will be able to constrain themass-to-radius ratio. Furthermore, the resulting spectrum can give us furtherinformation about the emitting area, and particularly, the temperature obtainedfrom the spectral fits will confirm if the local accretion rate onto the star isvirgulL_E as the simulations suggest. This could prove, for the first time, theextent to which the accreted material spreads over the surface.
Publications
Instrument EPN, OM, RGS1, RGS2
Temporal Coverage 2010-10-05T04:19:22Z/2010-10-05T19:03:49Z
Version 17.56_20190403_1200
Mission Description The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs second cornerstone of the Horizon 2000 Science Programme. It carries 3 high throughput X-ray telescopes with an unprecedented effective area, and an optical monitor, the first flown on a X-ray observatory. The large collecting area and ability to make long uninterrupted exposures provide highly sensitive observations. Since Earths atmosphere blocks out all X-rays, only a telescope in space can detect and study celestial X-ray sources. The XMM-Newton mission is helping scientists to solve a number of cosmic mysteries, ranging from the enigmatic black holes to the origins of the Universe itself. Observing time on XMM-Newton is being made available to the scientific community, applying for observational periods on a competitive basis.
Creator Contact https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published 2011-11-04T00:00:00Z
Keywords "spectral lines", "spectral fits", "local accretion rate", "neutron star systems", "gravitational redshift", "xray time variability", "neutron star surface", "radius ratio", "accreted material spreads", "spectral resolution", "resolution spectral"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Mr D. Altamirano, 2011, 'First high resolution spectral studies from marginally stable nuclear burning', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-0dtffqt