| Name | 086403 |
| Title | Preparing for the next Nova of the Century.. |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0864030101 |
| DOI | https://doi.org/10.57780/esa-ahyx6lh |
| Author | Dr Jennifer Sokoloski |
| Description | Changes in the amount of material reaching the accretion disk boundary layer can drastically modify its structure. We are witnessing such changes in a symbiotic recurrent nova, T CrB, for the first time. Two observations with NuSTAR and XMM have revealed that the accretion rate has increased by a factor of about 10 and that the boundary layer has become optically thick. The next step toward our understanding of the current state is to observe T CrB when it returns to its quiescence level, which may happen during AO19. This ToO observation will allow us to test the idea that nova eruptions in T CrB follow after multi-year periods of enhanced accretion onto the white dwarf due to an accretion disk instability. It will also help us study disk instablity events in large accretion disks. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2020-09-07T23:50:02Z/2020-09-08T14:47:06Z |
| Version | 18.02_20200221_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 | 2021-10-27T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Jennifer Sokoloski, 2021, 086403, 18.02_20200221_1200, European Space Agency, https://doi.org/10.57780/esa-ahyx6lh |