| Proposal ID | 051099 |
| Title | From Super-Eddington to zero: following a Z source into quiescence |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0510990101 |
| DOI | https://doi.org/10.5270/esa-kwc3app |
| Principal Investigator, PI | Dr Jeroen Homan |
| Abstract | XTE J1701-462 is probably the most luminous Galactic transient neutron star LMXB(NSXB) in the history of X-ray astronomy. Early observations have alreadyclarified our view on the role of mass accretion rate in NSXBs. Observing XTEJ1701-462 as it returns to quiescence will create a unique opportunity to studythe effects of mass-accretion rate on the spectral/variability properties in asingle NSXB over an unprecedented luminosity range. We propose a Chandra/XMM-Newton TOO program with two goals: 1) observe the source during the end ofthe decay and in quiescence, to complete what might well become a Rosettastone for NSXBs and 2) constrain the structure of neutron stars by studying theeffects of near-Eddington accretion on the cooling of the crust/core in transient NSXBs. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2008-03-22T08:20:44Z/2008-03-23T02:14:13Z |
| 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 | 2009-04-14T00:00:00Z |
| Last Update | 2026-03-04 |
| Keywords | "super eddington", "variability properties", "rosetta stone", "neutron stars", "XMM", "xte j1701 462", "xmm newton", "single nsxb", "z source", "XMM-Newton", "luminosity range", "xray astronomy", "eddington accretion", "transient nsxbs", "mass accretion rate" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Jeroen Homan, 2009, 'From Super-Eddington to zero: following a Z source into quiescence', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-kwc3app |