| Proposal ID | 084075 |
| Title | A new class of disk-accreting white dwarfs: diagnosing boundary layers |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0840750201 |
| DOI | https://doi.org/10.57780/esa-wj33kgu |
| Principal Investigator, PI | Dr Raimundo Lopes de Oliveira |
| Abstract | SU Lyn is a purely accretion-powered symbiotic star revealed for us from X-rays.Its weak high-exciting emission lines rendered it invisible to optical surveys.While indicating that the already significant total estimated Galacticpopulation of symbiotics (~3x10^5) is biased and thus underestimated, thisdiscovery opens a new window on accretion and evolution of symbiotics. Here wepropose XMM-Newton observations of two targets to go deeper in the subject: (i)SU Lyn, to better understand the response of the accretion disk and boundarylayer to changes in accretion rate, and (ii) IGR J17164-3803, in an exploratoryeffort to validate it as a member of the class. |
| Publications |
|
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2020-03-30T21:33:28Z/2020-03-31T14:01:48Z |
| Version | 18.02_20200221_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 | 2021-04-16T00:00:00Z |
| Last Update | 2026-03-04 |
| Keywords | "xmm newton", "subject \:", "XMM", "optical surveys", "accretion rate", "XMM-Newton", "exploratory effort", "boundary layer", "su lyn", "accretion disk" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Raimundo Lopes de Oliveira, 2021, 'A new class of disk-accreting white dwarfs: diagnosing boundary layers', 18.02_20200221_1200, European Space Agency, https://doi.org/10.57780/esa-wj33kgu |