A dataset provided by the European Space Agency

Name 067118
Title Probing the gravitational field around neutron stars with Fe lines and kHz QPOs
URL

https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0671180201
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0671180301
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0671180401
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0671180501
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0671180601

DOI https://doi.org/10.5270/esa-0kivalg
Author Prof Mariano Mendez
Description Broad Fe lines have been detected in 10 neutron-star LMXBs. In two sources the
Fe line and kHz QPOs give consistent values for the inner radius of the
accretion disc, but measurements were not simultaneous. Using XMM-Newton/RXTE
and Chandra/RXTE simultaneously, we have recently shown that in the LMXB 4U
1636-53 the Fe line and the kHz QPO yield different disc radii. The frequencies
of the kHz QPOs correlate with the disc radius inferred from broad-band spectra,
while the Fe line appears to change independently. We propose 5 simultaneous
XMM-Newton/RXTE observations of the LMXB 4U 1728-34 with both a broad Fe line
and kHz QPOs, using the long-term variability of this source to test the
dynamics and correlation of the radii inferred from the line and the kHz QPOs.
Publication No observations found associated with the current proposal
Instrument EPN, OM, RGS1, RGS2
Temporal Coverage 2011-08-28T14:08:20Z/2011-10-07T13:16:25Z
Version 17.56_20190403_1200
Mission Description The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's 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 Earth's 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 2012-10-26T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Prof Mariano Mendez, 2012, 067118, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-0kivalg