| Name | 040079 |
| Title | A POSSIBLE SPECTRAL SIGNATURE OF ULTRACOMPACT LOW MASS X-RAY BINARIES |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0400790101 |
| DOI | https://doi.org/10.5270/esa-fqagk74 |
| Author | Dr Lara Sidoli |
| Description | ASCA and BeppoSAX obs. of ultracompact (Porb<1hr) LMXBs revealed 2 possible spectral differences compared to other systems.These are (1)the presence of a discrete feature near 0.7keV (attributed to local overabundance of Ne), and (2)the parameter values when fit with a disk-blackbody and Comptonized continuum.Chandra and XMM observations complicated the picture, confirming a Ne overabundance only in few ultracompact sources, suggesting a possible variability. We wish to test2possible explanations for this variability, and to clarify the emerging picture of a spectral signature for the ultracompact systems using XMM.We propose here to observeX1832-330,the only persistent ultracompact LMXRB in a globular cluster still not investigated with high resolution spectroscopy. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2006-09-22T00:50:14Z/2006-10-20T15:42:40Z |
| 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 | 2007-11-23T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Lara Sidoli, 2007, 040079, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-fqagk74 |