| Proposal ID | 011245 |
| Title | EPIC Observations of Anomalous X-ray Pulsars |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0112450301 |
| DOI | https://doi.org/10.5270/esa-xw5vxry |
| Principal Investigator, PI | Dr Martin Turner |
| Abstract | GT- HD49798 is a sdO6 star in a spectroscopic binary with orbital period 1.55days. In X-rays it has a very soft spectrum and a periodicity at 13 s,indicating that the companion is a magnetized compact object. The proposedobservation will allow to measure the period evolution (and thus distinguishbetween a ns and a wd) and to confirm the NIV absorption edge suggested by ROSATresults. NOTE FOR THE PLANNING: 3 pointings of 5 ksec each are required, in order tocover different phases of the 1.55 day orbit. The choice in the time constraintsform (repeat every 11 hours) is just a possibility: such a tight constraint on the spacing is not required, as far as different phases are sampled. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2002-05-03T11:01:25Z/2002-09-17T17:17:52Z |
| 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 | 2004-08-06T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "EPIC", "magnetized compact object", "anomalous xray pulsars", "orbital period", "spectroscopic binary", "sdo6 star", "ROSAT", "period evolution", "soft spectrum", "tight constraint" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Martin Turner, 2004, 'EPIC Observations of Anomalous X-ray Pulsars', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-xw5vxry |