A dataset provided by the European Space Agency

Name 006074
Title X-Raying the Stream/Disk Impact Region in XB1254-69
URL

https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0060740101
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0060740501
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0060740601
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0060740701
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0060740801
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0060740901

DOI https://doi.org/10.5270/esa-l5pru2k
Author Dr Duane Liedahl
Description X-ray spectroscopy of LMXB dippers offers the potential to isolate the physics
of the collision of the accretion stream with the disk edge, which bears on
several aspects of disk accretion. We propose to observe XB1254-69 for three
binary orbits (42 ksec). Whether the absorbers are confined to the disk edge or
comprise the denser component of a two-phase medium at smaller radii, in XB1254
they are most likely moderately ionized. Using the neutron star as a
backlighter, we can infer the physical state of the absorber by measuring edge
positions and depths, and, if the post-impact stream is turbulent, absorption
lines. We have developed sophisticated non-LTE opacity models of 65 ions, with
the expectation that these observations will constrain rad/hydro models of the.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2001-01-22T00:27:12Z/2002-02-08T01:09:49Z
Version PPS_NOT_AVAILABLE
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 2003-02-23T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Duane Liedahl, 2003, 006074, PPS_NOT_AVAILABLE, European Space Agency, https://doi.org/10.5270/esa-l5pru2k